fact. it only works if you are overheating from a clogged radiator - if it works, it is a band aid for some underlying issue that exists elsewhere in the cooling system.
Yeffrey Ramos your cooling system is inadequate. That’s the only way it ever works. “Works” your coolant is cooler, but I wonder what your oil temp gauge would say. You are just moving the coolant to quick to remove the heat from the engine as well as you would otherwise. Need more cooling, get a bigger radiator. No thermo is a poor bandaid to the real problem.
i have a raceready 3 core radiator from MIshimoto, faster fans and cooler thermostat. still getting nice and toasty! so will have to remove thermostat this weekend... turbo will heat up the motor just fine to operating temps lol trust me
Yeffrey Ramos when cylinder pressures increase like that, I go with electric water pumps to keep the flow at full tilt. Yes, I definitely see how you get hot. You are going to want an oil cooler as well if it’s turbo is pulling from the oil feed
My 1992 camry 4cylinder had it without thermostat for 7 years . I live in Coachella valley. It gets hot over here up to 120 degrees. And my car still runs fine . And I removed both fans . And been stuck in really bad traffic and temp is in the middle. Those toyota motors are almost bulletproof.
I'm almost 50...Been working on cars with my Dad since the 70's...We have always removed the thermostat in summer conditions...Nothing ever happened...Had an 88 grand Cherokee, ran it with no thermostat for years...Ran great...with the expectation of no heat...Have 2004 Grand Cherokee, thermostat failed twice, bursted the top water hose coating the engine with antifreeze...Removed it permanently, runs great. Regardless of no thermostat, engines run hot and gets hot... As soon as you open your hood, the engines heat wave hits you. Open a radiator cap after running your car for a few hours. See what happens!!!
Hey Leo so do you think its safe to drill a holes in my thermostat for my Lincoln Continental 2000 its a v8 and i replaced the thermostat, waterpump, and radiator, and bled the system many times but that thing still overheats. Hoses are good as in they dont implode when the engine is revved up. Everything holds pressure. my guess is that maybe its a faulty radiator because i didnt have the tools to do a flow test on it. but its cool to the touch when the fans kick in. so i dont know im really lost. im about to drill holes in the thermostat as my last hail mary attempt.
I had to tame mine out of my 1989 Chevy blazer tonight. It wasn't opening at all! So the temp got to 210 in five minutes. Now? Alittle over 100. So I plan on buying one next paycheck and putting it in
In extremely hot countries ( 42-50 degree celsius the Thermostat are removed from older vehicles 4 × 4's and they run just fine. Yes they are running on choke but no issues with either engine or overall performance considering the age of the vehicle and it's use as an off road vehicle and general run around. For the record I just want to say that main stream edjewcation teaches us a lot of stuff that in reality is the complete opposite, if something works it works and we should stop with the divide and conquer as we all feed them our energy!
Riiight. Thermostat on an older car I just brought for my new job is stuck closed. Engine overheats in 5 minutes. Removed thermostat to test it, that's how I found it's stuck closed and not opening at operating temperature. Running the engine without the thermostat and just letting the coolant free-flow, engine doesn't overheat, doesn't get as hot as it should but still registering just under half on the gauge after 5-10 minutes(variable in reaching that temp is down to day or night time operation, gets warmed up during the day faster.) Maybe what you're saying applies to people who live in igloos but sure as shit doesn't apply to me. Maybe you think running it with a blocked thermostat is a better idea? In the tropics where I live, we have two seasons, wet and dry, there's no winter or summer, it's always hot it's juts sometimes it's raining. The chances of me freezing to death without a heater in my car are about the same as having removed the thermostat causing this fuel injected 2008 year model engine to suddenly have a choke or my pistons being damaged in the week or so it'll take the new thermostat and o-ring to arrive. In the meantime, driving without a thermostat means I get to keep my job and not blow a hose, head or gasket due to overheating which is much, much, much worse than running a little bit cold.
Some low buck roadkill stuff here coming soon, but with my own 74 f100. getting the engine prepped and ready currently. the 74 5 speed f100 will hit the road again here soon.
In the heat of Alabama, we take the thermostat out in summer. In the dead of winter we put one in. They're incredibly useful in the winter time. A cold engine should never be kept cold, for many reasons. Old iron head iron block motors will naturally pick up heat regardless. But in winter time, you'd be amazed at how cold a car can stay. I had one with no thermostat stay so cold, you could hold your hand on the heads comfortably.
2:00 you not completely right. Liquid gasoline never burn. Vapor burn and a cold engine does not vaporize fuel as well as a hot engine. This is why a cold engine run rich. Yes I have videos of me working on cars.
There is so much incorrect information in this video is scary. Simply put, rate of flow does not effect the temperature of the coolant whatsoever. It's the other way around. Running without a Tstat will not cause your car to overheat. What will cause your car to overheat is the problem that caused your car to overheat in the first place which is why you're thinking about removing the Tstat. This nonsense about the coolant flowing so fast it will make your car overheat is just that, nonsense. Cars were run for decades with no, or inefficiently engineered Tstats. The result? They ran too cool. Remedies existed such as placing a piece of cardboard against the radiator to allow the heat to build up to generate heat for comfort. The Tstat exists for only one reason. To allow the car to reach operating temperature sufficient to provide for interior cabin heat as quickly as possible. And the next time I see a non-operting car come into the shop because it was overcooling, as opposed to overheating, will be the first time.
You won’t see it in the coolant - it will still read cold. The cylinders are actually hotter overall - it even shows up in the oil temp. These are facts, not fiction.
@@ThunderHead289 These are not facts. Think about what you just wrote. If this were the case, it would be such with or without a thermostat. Either the coolant is cooling or it is not. It's rate of flow does not matter. If a car is overheating without a thermostat, cylinders or else, it's not BECAUSE you do not have a thermostat. It would be overheating for the reason that is causing you to take the measure of removing the Tstat. All other elements of the car working properly, the removal of the Tstat does not cause overheating. It accomplishes just the opposite. Rate of flow does not effect temperature. Temperature effects rate of flow. So if you're going to claim facts, start with that one. You're just wrong on this one. And I'm not even saying that the lack of Tstat will not possibly cause damage to the internals of an engine. But it does not do it from an increase of heat within the block. If it causes damage, it will be because the block is too cool and not reaching and maintaining optimal engine temperature. But that's just the opposite of what you're claiming. And no, it does not show up in the oil temp.
There should be a caveat though, if the choice is driving overheating or driving without a thermostat (say you are on a road trip far from home, it is a long holiday weekend and you can't get the part) if the car will run and not overheat, pulling it out can be a life saver if you've got one that would otherwise be stuck closed. I've had to do it a couple of times, with no long-lasting effect, but like the video said, it also depends on the model. I of course wouldn't do it if it cause the engine to continue to overheat due to improper cooling, but if the choice is being stranded due to overheating or having some loss of efficiency in the short-term then it can be a good quick fix. The short-term risk of driving with it overheating at all vs not having a thermostat is quite a bit different. It's always about the risk/reward ratio when doing triage. Unfortunately this little trick doesn't work as well with a lot of newer cars anyway where the thermostat is integrated into its housing and impossible to remove.
im a fan of taking out the thermostat . i know this . in the swimming pool industry if the water moves too fast thru the heater it wont get hot and stays cool. i can see the engine being hotter than the coolant and getting false reading and actually running an engine hotter than what the gauge reads.
Wrong. In the swimming pool scenario heater distribute heats to lots of water volume if it flows fast. Thats why you wont feel.big different. If it flows slowly heater can pass the heat to specific water volumes quickly.
I have a volvo 940. I bought 2 months ago without thermostat. Fuel consumption was high !! After mounted new thermostat the problem solved. I also had to remove oil engine because it was contaminated with fuel. Thank you for this video.
Just did an extended road-trip in the hotass southwest in my beatass RamVan. No thermostat, I installed a cheapo hood-scoop and ran a mix of 25% coolant/75% water......thing ran nice and cool, rarely got over 170-degrees even on very hot days.
In general you're right for a year round daily driver. But for a hotrod only driven in the summer, some cases will be better without a thermostat. Like mine, it's a 454 BBC and I have a hard time keeping it under 190 degree. Pulled the thermostat and it helped cool it 5 degrees, not a big help but better than nothing. When I bought the aluminum rad I had a SBC but the big block maxed it out. What ultimately fixed the problem was installing two coolant fittings at the back of the intake to pull coolant out of the heads rear coolant passages and send it to the inlet side of the water pump. Now she runs under 180 all day long.
Great tips! There are certain parts of an engine that don't need to be "modded". Bigger radiator or better hoses sure. Modding the thermostat, just buy a quality stock one and toss it in.
great to know that someone knows about engine cooling system. yap you are totally correct. some fool even remove oil thermostat on old engine. this is even worst.
So what if my thermostat is failing and I just pulled it out so I can get home from working the late shift without it over heating. And first thing in the morning I go to local parts store and pop new thermostat in. I really think that is my best bet. Don't want to over heat but not planning on it staying out.
you should explain to people that this is mostly for OEM cars and for places where temps vary from winter to summer. if you're driving in an average 70 ish temps or higher, your car WILL get up to temp and drive normally without the thermostat. If you have a highly aftermarket modified engine you might need to remove it in the summer months to increase flow and keep temps down. or maybe i just don't know what i'm talking about =)
Hi there Thunderhead, love your videos, especially the Rotstang! I've got a question though, I've got a '87 cougar w/ a 302. My digital (unfortunately) dash always reads cold but the engine runs hot. I've replaced the thermostat to no effect and I'm wondering if because the computer reads as cold that the thermostat is not properly functioning?
Uhhh.. what..? I don't think you will EVER overheat if you don't have a thermostat installed.. having water run by hot metal constantly will only cool it faster, it won't overheat because of it.. does your radiator become less efficient at high speed and fans running with more air rushing past it..? Of course not. It's the same principal. I've been running my Rx8 without a thermostat and it runs BEAUTIFULLY!!! It still comes up to a safe operating temperature, but NEVER gets too hot n "spongy" 👌🏼 don't be fooled into thinking it's "unsafe" to run your vehicle without a thermostat.. (you may need it for winter if you want some heat or power tho😜)
#RideLife use your brain here for a second - it’s a 2 part issue. Coolant runs through the radiator so fast that it doesn’t cool, and if it’s too fast, the heat can’t transfer from the block to the coolant. The temp gauge will show cool, but your oil temp will be high which is indicative of hotter internals. Your temp probe only monitors your coolant. Engine builder & engineer
@@ThunderHead289 Sorry for my bad english.... Did you think...thermostat will closed again after coolant flow to the water jacket? When thermostat open it wont closed again until the coolant really cool.... Try to boiling your thermostat in a pan... then when thermotat start to open pour water in room temperature to your boiling pan... you will see...that thermosttat wont closed.... thermostat works just in cold start... thats what thermostate for...
I'm frm tropics. ambient temp in mrng is 28celcius and goes up to 34 by midday.... engine warms up quickly even without thermostat. No issues in fact engine runs smoother as the load frm waterpump is lighter now. no thermostat equals less resistance to coolant flow. engine revs faster n smoother.... knocking n pinging during midday heat is gone.
Thanks a lot, I'm a tech but a modern tech that only replaces parts. I just bought a C6 that doesn't hold a good temp and runs cool. I kind of assumed that shouldn't be an issue but am concerned with oil temp and heat expansion. I'll be starting at the tstat ASAP. Really good video.
You should learn about thermo dynamics. The faster the water flows the more heat it grabs, learn before you speak instead of just repeating shit you hear.
you need to learn before you speak. there is a threshold where the water will move to fast to absorb heat and you can overheat in this way driving down the road at rpm, ie water pump spinning faster with no restriction. * mechanical engineer.
I think we will need a "project farm" style video that uses the actual scientific method to show data and evidence instead of using testimony and reason.
Never question this guy he is a *mechanical engineer and knows all about fluid dynamics. Or he just spews all the crap he hears from someone else. Use a restrictor plate in place of the T-stat and youll be fine. Circle track guys run that way and viola! One less fail point to worry about. If you live in a cold area maybe a different story. But not here in Florida.
I am thinking o Taking out mine as I have replaced EVERYTHING on my POS 2004 Ford Focus and the thing SILL overheats, I mean from the radiator, blown hoses from overheating, new thermostat, housing, pump, there is nothing left for me to do BUT take it out as I am not going to spend $2,000 to rebuild a motor on a $1,000 car, so do you suggest anything else?
Thank you! My step-dad is an "Extreme Cheapskate" and insists that he runs all year round w/out the thermostat and wants to remove mine w/out replacing it. I asked him how much they cost because he is making it sound like they're more expensive that I thought. 10 - 15 dollars??? That's chump change! Why torture yourself in the winter and use cardboard to keep warm? He refuses to watch this video too btw. Oh well. I plan on taking care of myself and my car.
My car is giving me issues with over heating and the h/c needle going up n down and stuff. We took the thermo out and drove it around. Parked it. Let it sit and never heats up.. but i do want to have a thermostat. The actual thermostat we took out is new but its aftermarket. Can it be that the thermostat needs to be an oem?
hey big fan of your videos I had a question I'm building a top end with stock bottom end on a 91 351w it seams to be stock bore but the pistons have 060 stamped on them along with some arrows pointing to front of engine is that just the way they came?
I have a 2000 Ford excursion V10 ,I removed thermostat year and half back every time fill up tank I add acetone 2oz per 10 gallon my big ass suv is giving me 15to 16 mpg on street driving around 35 to 45 mph and on freeway it's around 18 to 19.7 mpg at 65 to 75 mph , so far I did not have any problem and I already put about 14 thousand miles...synthic oil change at every 5k.no mechinical problem.
Now that we've solved this question, a lot of enthusiasts still wonder what stat to use in their cars that works the best. Some run really hot thermostats in their SBCs because they say it gives better performance at greater risk of overheating. How hot is too hot for an operating temperature for cast iron blocks and heads, and how cold is too cold? 165 degree stat works fine on my 305, it never goes past 170, I would consider 200 hot for that stat. Is that too cold?
i run a 180 thermo in all my engines - at this temp, it allows for the proper thermal expansion of engine internals while still maintaining a low operating temp. the cooler you can run while still getting your engine to the proper expansion and the oil the proper temp, the better. anything really over 180 is just excess heat that doesnt harm anything, but you lose performance due to having to run less ignition timing, and your fuel charge will be less dense. i run 160 in the summer myself and 180 in the winter. if you had to pick one for all conditions, id go 180.
my ford 390 has been running cool. It had a 160 degree thermostat in it - which I changed to 180 and it's still running at about 173 degrees. should I block off part of my radiator, or leave it?
You can block it off in the cold season to retain block heat better, since cast iron takes so long to warm up. As long as your pump is circulating coolant, it shouldn't overheat unless you're obstructing the radiator too much. I've noticed there's little water jacket block off plates on certain intake manifolds, I've taken mine out and it seems to be doing fine... why would they put those plates in there in the first place?
Temp your oil and see why that's a bad idea - an open thermostat is much different than no thermostat. The restriction is necessary to allow time to pick up heat and then to disperse the heat in the radiator. Just because your coolant is cool, doesn't mean your oil is in this case
I have a 57 willies and it's got a 302 ,the center of the block gets warm 180 thermostat will not open soon enough, I am at 205 and then it opens but it's to late it wants to roll to 210 and I shut it off before danger,
Hi I have a diesel Toyota engine and I can't reach operating temperatures i recently replaced the water pump myself but didn't change the thermostat. Both radiator hoses are hot to touch and the heater still works? Do u think ive got a stuck open thermostat
even if the termostat stack closed? most overheating issues bec of termostat thats why too many car owners removed it especially on those hot regions ..here in the philippines 99% of the jeepneys dont have termostat and they driving more than 12 hrs a day and still its running on our roads for more than 50yrs..what about those new cars in the market with termostat? most of them ovearheat and dont last!!!! well some wise engineers deaigned a machines that dont last so that the flow of money still keep on coming..😊😊
ok so now correct if im wrong but if u have a carb with electric choke say a holley or edelbrock as long as theirs keyed power to it it will fully open the choke and so as long as u have ur carb set so its not rich then u should be able to get away with say running an engine at 120-130 degrees all day long (if u can even get it to stay that low) without doing any damage to the engine correct?
That eliminates a lot of the problem except the issue of thermal expansion. So at low temps, tolerances will be a bit looser. Causes a little more cylinder wear. I run a 160 unit myself
The thermal dynamic property doesn't change, the speed of the water flow is irrelevant, true you're car won't warm up as fast, and it may not ever get to the operating temp for highest efficiency. But it won't make your engine run hotter. I can go in deeper detail if anyone has a question
Jake Borg I have run with no thermostat in quite a few vehicles....almost always getting up to normal operating temp, according to the dash-gauge....just takes a little longer.
Me Me It really depends on how much you like the vehicle......is it a beater/junker/near-junker??? If it is a nice vehicle, that you want to keep a while, I would get a definitive diagnosis on what is going on......that includes testing for a blown head/head-gasket. The sealant-in-a-can is risky.....sometimes they work, sometimes not, sometimes they cause more problems than they fix. If your head is blown and you do not want to get it repaired properly, removing the t-stat should keep you running for a while. I drove my 98 MPV for over 4 years with a blown head-gasket......ran fine as long as I kept the t-stat out.
If your in a hot climate and having over heating issues that you can't solve then, pop your thermo out. If that solves the problem then pop a restrictor plate in it. We run no thermostats in all out circle track cars and my father's drug car. Actually the mustang in my pic has no thermostat. Thermo stuck on a trio to PA so I pulled it apart on the side of the road and haven't put one back in it because it works fine for me.
The problem is that a guy can’t really tell - your coolant is moving too fast to pull away heat as effectively as if it were actually slower - if you had an oil temp gauge, it would actually read hotter while your coolant temp “appeared” cooler.
I take out my thermostat in my captiva 2008 gas 2.4... So now I don't see the clear smoke coming on my hood... Thinking and afraid without thermo might be damage the engine.. But I was afraid also if I put new thermo it might get hot again
DarkLinkAD how do you know that it wasn’t? - and really that’s a model by model basis - like the 94 bronco holds open loop. Another aspect is that water flows so fast that heat is not transferred - so the probe reads cold, but if you have an oil temp gauge, you will actually run higher oil temps
OBDII vehicle, you just log the PID's for short/long fuel trim, open/closed loop status. Cant remember if the Impalas have an oil temp gauge, its been years since it was totaled with 225k miles IIRC.
I think you need more Research !!! We By-Pass our Trucks / We LOVE IT, this is our third year !!! Here is what we do to our Trucks... We use 2 Thermostats. One, is the By-Pass. The other is " Normal ".... The By-Pass... We use it for Summer... Then we Switch it back to " Normal " in November each year. NOTE: If you do a By-Pass.... You can Drill the Hell out of the Thermostat, LOL. You will only need the " Rubber Ring " and the " Round " part of the Thermostat, so it can sit in the " Hole " safely and it won't " Leak " on you. Hope that will help People who is looking to do it.... Hmmmm, maybe I can make a Video of it, LOL
I'm a mechanical engineer and build engines on the side. You all do what you want, but there are several solid reasons why not to run below 160 degrees. Wear your stuff out for all I care, it's yours - not mine lol.
+ThunderHead289 -Who died and made you the " Mechanical Engineer ". Its like People who is going to Pay to have a Trip / Vacation to the Moon, once they are back... They become Astronaut???? All I can say is, do a bit of " RESEARCH " first.... LMFAO
@@ThunderHead289 , I have a question and not trying to be a jerk. I watched your video to gain knowledge and I appreciate the time it took for you to make it. I'm a fellow TH-cam video maker so trust me, I truly believe you're trying to help with the information you presented in this video. That being said, I've read a lot of comments and you keep posting this phrase, that the coolant is moving too fast so it doesn't pull away heat as effectively. You're a mechanical engineer and I respect that. I'm a Navy nuclear mechanical engineer and we used the equation Q = mc∆T. And m = mass flow rate which is the equation m = rVA where r = density, V = Velocity, and A = Area. As you increase the velocity (V) of the fluid , not having restrictions by the thermostat, that should raise your m (mass flow rate). That in turn would increase your Q, the specific heat removed from the system right? This is what we learned in thermodynamics. Like I said, I'm not trying to be a jerk and I'm more than fine with being wrong or learning that I'm looking at this the wrong way. But as a Navy Nuc, there is a part of me that really needs to know the answer in a logical way. What am I missing?
None of this is true I’ve been buying cars for 25 years ran thousands of cars without the thermostats to freezing temperatures different makes different models different miles different years and through the summer never once have I had overheating issue come on now
Since the 70's my father has been taking out the thermostat in every car he's ever owned...Now I'm 50' and I drive a 2004 jeep Cherokee without a thermostat... There's has never been a problem of engine failure because there wasn't one...And the only time I've experience over heating is when cooling fan failed while idling in traffic.
@@emilmar5466 Thanks for sharing this , and I am taking the spring from inside of the thermostat so that it won't close anymore, on my Toyota Prius V 2013 , that is built into chamber. I wish I did knew this before when I got stuck 2 hrs away from home, heading on long drive. So, I bought a after market one from nearby auto zone and put it myself , but , had to stop on the way back every 20 minutes due to overheating, and topping off the coolant. Now I now what to do next time. Rip off the spring that's inside Thermostat and refit the tstat so it'll let the coolant flow.
Thank you I just found out my thermostat housing did not come with t stat and my gas has been at least 10 to 8 miles a gallon with a v6 I was filling up every 3 days
That was my heater core bypass. Here is why I did this instead of a plug - I used to have a plug/cap on that port. Over time it weather checked and actually blew out. The way this is here, it will never fail. Though it is as ugly as all get out.
hey if my check engine light comes on it's a standard but it is radling just a little but the you get it into hi Rpms it won't what could that be it's a Ford's ranger v6
You can test your thermostat by buying a new one and placing them both in a pan on the stove and see how far your thermostat opens up compared to the new. And if not needed just take the new one back and get your money back. 🤔 Otherwise replace it 👍
DOPE VIDEO MATE NEW SUB HERE, QUICK QUESTION I HAVE THIS MECHANIC SAYS MY CAR DONT NEED THERMOSTAT N HE STUBBORN GUY SAYS SUM CARS DNT DEPENDS BRAND OR YEAR WHAT YOU THINK BRO IS THIS TRUE??
NEVER run without a thermostat on any modern car EVER. The car is design to run at operating temperature, and get there quickly, so your car will CONSTANTLY be in a state of "cold start" meaning the computer is throwing tons of fuel into the engine trying to get it to operating temp and it'll never get there. All that fuel ends up in your cat and destroys it. It also breaks down your oil and screws with the lubrication of your rings. And another side effect, since your coolant never gets to temperature, your radiator also never gets your transmission fluid to temperature either, and on my car that meant that the torque converter would never lock up since the atf is supposed to be at operating temperature as well.
I can't even believe that people would consider running without a thermostat in their engine. It would just take way too long for the engine to get to a better operating temperature. It's not just there to regulate flow at higher temps, it is there to stop flow at start up temps.
Oh I never had a problem overheating, and the intake temp stays right, and every engine has went over 250,000 and oil lasts longer, I use edelbrock carbs with no choke, they run perfect!
My 99 nissan frontier has no thermostat for 3 years and when its cold it blows hot air perfect and when summer comes around my a/c works beautifully with no problems these guys here are just myth busters dont believe the hype partnas...
"coolant flows so fast" through the head that it doesn't pick up the heat and it can overheat? Yes there are side effects of running no thermostat but overheating isn't one of them, cylinder washing and fuel air ratio problems yes.
just solve my e30 m40 overheating problem, already change new radiator, waterpump, fan, viscos but still overheat, its overheat when idleing just like a broken thermostat or a weak viscos, but when i about to change the thermostat the previous owner didn't put new thermostat in it, slap a new one and its all good thanks man
Anyone run their car without a thermostat? My 2000 honda Civic keeps over heating within 15 mins? Can I drive without a thermostat if I remove it for a couple days? Till I get paid
I bought a used suv (1988 dodge Raider), the weather has been very cold so everything was fine. The first warm day (56 degrees) my truck overheated. We had several warm days and my temps got high, but not in the red...blowing coolant right through my overflow tank. I thought I'd check my thermostat. Pull off the housing...no thermostat.
now just wait a minute, my old farmall has no water pump, and no thermostat. it came that way from the factory, but that is not the same as my truck or jeep...
New thermostat arriving in the mail later tonight I have to go take a drug test for parole keep the locked one on that's been burning up my fucking engine and oil and making my engine overheat cuz it's locked in the place my hose feels like it's going to explode burn up the engine or have it cool so I can run over here real quick I rather have my engine cool it's a truck it'll be fine nice big Pistons my engine oil is fried I'm not doing it
Driving without a thermostat is simple suicidal for you engine. It is the easy way out for lazy mechanical principals. *Wrong every step of the way*
fact.
it only works if you are overheating from a clogged radiator - if it works, it is a band aid for some underlying issue that exists elsewhere in the cooling system.
lmaoo it is? shit so i must be dead
Yeffrey Ramos your cooling system is inadequate. That’s the only way it ever works. “Works” your coolant is cooler, but I wonder what your oil temp gauge would say.
You are just moving the coolant to quick to remove the heat from the engine as well as you would otherwise.
Need more cooling, get a bigger radiator. No thermo is a poor bandaid to the real problem.
i have a raceready 3 core radiator from MIshimoto, faster fans and cooler thermostat. still getting nice and toasty! so will have to remove thermostat this weekend... turbo will heat up the motor just fine to operating temps lol trust me
Yeffrey Ramos when cylinder pressures increase like that, I go with electric water pumps to keep the flow at full tilt. Yes, I definitely see how you get hot. You are going to want an oil cooler as well if it’s turbo is pulling from the oil feed
My 1992 camry 4cylinder had it without thermostat for 7 years . I live in Coachella valley. It gets hot over here up to 120 degrees. And my car still runs fine . And I removed both fans . And been stuck in really bad traffic and temp is in the middle. Those toyota motors are almost bulletproof.
I'm almost 50...Been working on cars with my Dad since the 70's...We have always removed the thermostat in summer conditions...Nothing ever happened...Had an 88 grand Cherokee, ran it with no thermostat for years...Ran great...with the expectation of no heat...Have 2004 Grand Cherokee, thermostat failed twice, bursted the top water hose coating the engine with antifreeze...Removed it permanently, runs great. Regardless of no thermostat, engines run hot and gets hot... As soon as you open your hood, the engines heat wave hits you. Open a radiator cap after running your car for a few hours. See what happens!!!
Leo Cardona exactly!
lmaoooo dont open the cap unless you want to lose your good looks
Hey Leo so do you think its safe to drill a holes in my thermostat for my Lincoln Continental 2000 its a v8 and i replaced the thermostat, waterpump, and radiator, and bled the system many times but that thing still overheats. Hoses are good as in they dont implode when the engine is revved up. Everything holds pressure. my guess is that maybe its a faulty radiator because i didnt have the tools to do a flow test on it. but its cool to the touch when the fans kick in. so i dont know im really lost. im about to drill holes in the thermostat as my last hail mary attempt.
Leo Cardona A 2004 Grand Cherokee would probably have a check engine light.
I had to tame mine out of my 1989 Chevy blazer tonight. It wasn't opening at all! So the temp got to 210 in five minutes. Now? Alittle over 100. So I plan on buying one next paycheck and putting it in
In extremely hot countries ( 42-50 degree celsius the Thermostat are removed from older vehicles 4 × 4's and they run just fine. Yes they are running on choke but no issues with either engine or overall performance considering the age of the vehicle and it's use as an off road vehicle and general run around. For the record I just want to say that main stream edjewcation teaches us a lot of stuff that in reality is the complete opposite, if something works it works and we should stop with the divide and conquer as we all feed them our energy!
Riiight. Thermostat on an older car I just brought for my new job is stuck closed. Engine overheats in 5 minutes. Removed thermostat to test it, that's how I found it's stuck closed and not opening at operating temperature. Running the engine without the thermostat and just letting the coolant free-flow, engine doesn't overheat, doesn't get as hot as it should but still registering just under half on the gauge after 5-10 minutes(variable in reaching that temp is down to day or night time operation, gets warmed up during the day faster.) Maybe what you're saying applies to people who live in igloos but sure as shit doesn't apply to me. Maybe you think running it with a blocked thermostat is a better idea?
In the tropics where I live, we have two seasons, wet and dry, there's no winter or summer, it's always hot it's juts sometimes it's raining. The chances of me freezing to death without a heater in my car are about the same as having removed the thermostat causing this fuel injected 2008 year model engine to suddenly have a choke or my pistons being damaged in the week or so it'll take the new thermostat and o-ring to arrive. In the meantime, driving without a thermostat means I get to keep my job and not blow a hose, head or gasket due to overheating which is much, much, much worse than running a little bit cold.
I’m trusting you
Some low buck roadkill stuff here coming soon, but with my own 74 f100. getting the engine prepped and ready currently.
the 74 5 speed f100 will hit the road again here soon.
ThunderHead289 does this has any effect on failing emissions?
In the heat of Alabama, we take the thermostat out in summer. In the dead of winter we put one in. They're incredibly useful in the winter time. A cold engine should never be kept cold, for many reasons. Old iron head iron block motors will naturally pick up heat regardless. But in winter time, you'd be amazed at how cold a car can stay. I had one with no thermostat stay so cold, you could hold your hand on the heads comfortably.
2:00 you not completely right. Liquid gasoline never burn. Vapor burn and a cold engine does not vaporize fuel as well as a hot engine. This is why a cold engine run rich. Yes I have videos of me working on cars.
AGREE
Agree
Well my moms cinquecento 1.1 drove over 10 years with a failed thermostat, it was still immaculate. Praise the 1.1 F.I.R.E. engine
There is so much incorrect information in this video is scary. Simply put, rate of flow does not effect the temperature of the coolant whatsoever. It's the other way around. Running without a Tstat will not cause your car to overheat. What will cause your car to overheat is the problem that caused your car to overheat in the first place which is why you're thinking about removing the Tstat. This nonsense about the coolant flowing so fast it will make your car overheat is just that, nonsense. Cars were run for decades with no, or inefficiently engineered Tstats. The result? They ran too cool. Remedies existed such as placing a piece of cardboard against the radiator to allow the heat to build up to generate heat for comfort. The Tstat exists for only one reason. To allow the car to reach operating temperature sufficient to provide for interior cabin heat as quickly as possible. And the next time I see a non-operting car come into the shop because it was overcooling, as opposed to overheating, will be the first time.
You won’t see it in the coolant - it will still read cold. The cylinders are actually hotter overall - it even shows up in the oil temp.
These are facts, not fiction.
@@ThunderHead289 These are not facts. Think about what you just wrote. If this were the case, it would be such with or without a thermostat. Either the coolant is cooling or it is not. It's rate of flow does not matter. If a car is overheating without a thermostat, cylinders or else, it's not BECAUSE you do not have a thermostat. It would be overheating for the reason that is causing you to take the measure of removing the Tstat. All other elements of the car working properly, the removal of the Tstat does not cause overheating. It accomplishes just the opposite. Rate of flow does not effect temperature. Temperature effects rate of flow. So if you're going to claim facts, start with that one. You're just wrong on this one. And I'm not even saying that the lack of Tstat will not possibly cause damage to the internals of an engine. But it does not do it from an increase of heat within the block. If it causes damage, it will be because the block is too cool and not reaching and maintaining optimal engine temperature. But that's just the opposite of what you're claiming. And no, it does not show up in the oil temp.
@@dalepress1581 Excellent interpretation. I totally agree with you, on this one.
There should be a caveat though, if the choice is driving overheating or driving without a thermostat (say you are on a road trip far from home, it is a long holiday weekend and you can't get the part) if the car will run and not overheat, pulling it out can be a life saver if you've got one that would otherwise be stuck closed.
I've had to do it a couple of times, with no long-lasting effect, but like the video said, it also depends on the model. I of course wouldn't do it if it cause the engine to continue to overheat due to improper cooling, but if the choice is being stranded due to overheating or having some loss of efficiency in the short-term then it can be a good quick fix. The short-term risk of driving with it overheating at all vs not having a thermostat is quite a bit different. It's always about the risk/reward ratio when doing triage.
Unfortunately this little trick doesn't work as well with a lot of newer cars anyway where the thermostat is integrated into its housing and impossible to remove.
im a fan of taking out the thermostat . i know this . in the swimming pool industry if the water moves too fast thru the heater it wont get hot and stays cool. i can see the engine being hotter than the coolant and getting false reading and actually running an engine hotter than what the gauge reads.
Wrong. In the swimming pool scenario heater distribute heats to lots of water volume if it flows fast. Thats why you wont feel.big different. If it flows slowly heater can pass the heat to specific water volumes quickly.
I have a volvo 940. I bought 2 months ago without thermostat. Fuel consumption was high !! After mounted new thermostat the problem solved.
I also had to remove oil engine because it was contaminated with fuel.
Thank you for this video.
Just did an extended road-trip in the hotass southwest in my beatass RamVan. No thermostat, I installed a cheapo hood-scoop and ran a mix of 25% coolant/75% water......thing ran nice and cool, rarely got over 170-degrees even on very hot days.
In general you're right for a year round daily driver. But for a hotrod only driven in the summer, some cases will be better without a thermostat. Like mine, it's a 454 BBC and I have a hard time keeping it under 190 degree. Pulled the thermostat and it helped cool it 5 degrees, not a big help but better than nothing. When I bought the aluminum rad I had a SBC but the big block maxed it out. What ultimately fixed the problem was installing two coolant fittings at the back of the intake to pull coolant out of the heads rear coolant passages and send it to the inlet side of the water pump. Now she runs under 180 all day long.
Great tips! There are certain parts of an engine that don't need to be "modded". Bigger radiator or better hoses sure. Modding the thermostat, just buy a quality stock one and toss it in.
great to know that someone knows about engine cooling system.
yap you are totally correct.
some fool even remove oil thermostat on old engine. this is even worst.
So uhh my BMW runs without it and goes to the middle and stays there🧐. It has heat also
So what if my thermostat is failing and I just pulled it out so I can get home from working the late shift without it over heating. And first thing in the morning I go to local parts store and pop new thermostat in. I really think that is my best bet. Don't want to over heat but not planning on it staying out.
Tyler Taylor take the thermostat out.... Its a piece of unnecessary shit... The coolant will flow regardless
you should explain to people that this is mostly for OEM cars and for places where temps vary from winter to summer. if you're driving in an average 70 ish temps or higher, your car WILL get up to temp and drive normally without the thermostat. If you have a highly aftermarket modified engine you might need to remove it in the summer months to increase flow and keep temps down. or maybe i just don't know what i'm talking about =)
My Honda was overheating and we removed the thermostat. I live in Houston and it reaches high temps just as fast as before lol
TRUE
Hi there Thunderhead, love your videos, especially the Rotstang! I've got a question though, I've got a '87 cougar w/ a 302. My digital (unfortunately) dash always reads cold but the engine runs hot. I've replaced the thermostat to no effect and I'm wondering if because the computer reads as cold that the thermostat is not properly functioning?
Uhhh.. what..? I don't think you will EVER overheat if you don't have a thermostat installed.. having water run by hot metal constantly will only cool it faster, it won't overheat because of it.. does your radiator become less efficient at high speed and fans running with more air rushing past it..? Of course not. It's the same principal. I've been running my Rx8 without a thermostat and it runs BEAUTIFULLY!!! It still comes up to a safe operating temperature, but NEVER gets too hot n "spongy" 👌🏼 don't be fooled into thinking it's "unsafe" to run your vehicle without a thermostat.. (you may need it for winter if you want some heat or power tho😜)
#RideLife use your brain here for a second - it’s a 2 part issue.
Coolant runs through the radiator so fast that it doesn’t cool, and if it’s too fast, the heat can’t transfer from the block to the coolant.
The temp gauge will show cool, but your oil temp will be high which is indicative of hotter internals.
Your temp probe only monitors your coolant.
Engine builder & engineer
@@ThunderHead289
Sorry for my bad english....
Did you think...thermostat will closed again after coolant flow to the water jacket?
When thermostat open it wont closed again until the coolant really cool....
Try to boiling your thermostat in a pan... then when thermotat start to open pour water in room temperature to your boiling pan... you will see...that thermosttat wont closed.... thermostat works just in cold start... thats what thermostate for...
I'm frm tropics. ambient temp in mrng is 28celcius and goes up to 34 by midday.... engine warms up quickly even without thermostat. No issues in fact engine runs smoother as the load frm waterpump is lighter now. no thermostat equals less resistance to coolant flow. engine revs faster n smoother.... knocking n pinging during midday heat is gone.
Thanks a lot, I'm a tech but a modern tech that only replaces parts. I just bought a C6 that doesn't hold a good temp and runs cool. I kind of assumed that shouldn't be an issue but am concerned with oil temp and heat expansion. I'll be starting at the tstat ASAP. Really good video.
You should learn about thermo dynamics. The faster the water flows the more heat it grabs, learn before you speak instead of just repeating shit you hear.
you need to learn before you speak. there is a threshold where the water will move to fast to absorb heat and you can overheat in this way driving down the road at rpm, ie water pump spinning faster with no restriction.
* mechanical engineer.
faster than thereshold doesnt cause overheat.
I think we will need a "project farm" style video that uses the actual scientific method to show data and evidence instead of using testimony and reason.
Never question this guy he is a *mechanical engineer and knows all about fluid dynamics. Or he just spews all the crap he hears from someone else. Use a restrictor plate in place of the T-stat and youll be fine. Circle track guys run that way and viola! One less fail point to worry about. If you live in a cold area maybe a different story. But not here in Florida.
Is it ok to remove it if the car is in hot area where temperature is around 48 degree Celsius like Middle east?
I am thinking o Taking out mine as I have replaced EVERYTHING on my POS 2004 Ford Focus and the thing SILL overheats, I mean from the radiator, blown hoses from overheating, new thermostat, housing, pump, there is nothing left for me to do BUT take it out as I am not going to spend $2,000 to rebuild a motor on a $1,000 car, so do you suggest anything else?
Thank you! My step-dad is an "Extreme Cheapskate" and insists that he runs all year round w/out the thermostat and wants to remove mine w/out replacing it. I asked him how much they cost because he is making it sound like they're more expensive that I thought. 10 - 15 dollars??? That's chump change! Why torture yourself in the winter and use cardboard to keep warm? He refuses to watch this video too btw. Oh well. I plan on taking care of myself and my car.
My car is giving me issues with over heating and the h/c needle going up n down and stuff. We took the thermo out and drove it around. Parked it. Let it sit and never heats up.. but i do want to have a thermostat. The actual thermostat we took out is new but its aftermarket. Can it be that the thermostat needs to be an oem?
hey big fan of your videos I had a question I'm building a top end with stock bottom end on a 91 351w it seams to be stock bore but the pistons have 060 stamped on them along with some arrows pointing to front of engine is that just the way they came?
I have a 2000 Ford excursion V10 ,I removed thermostat year and half back every time fill up tank I add acetone 2oz per 10 gallon my big ass suv is giving me 15to 16 mpg on street driving around 35 to 45 mph and on freeway it's around 18 to 19.7 mpg at 65 to 75 mph , so far I did not have any problem and I already put about 14 thousand miles...synthic oil change at every 5k.no mechinical problem.
+Mars1313 - Great to hear, I am on that Journey right now, I agreed with you 100%
Now that we've solved this question, a lot of enthusiasts still wonder what stat to use in their cars that works the best. Some run really hot thermostats in their SBCs because they say it gives better performance at greater risk of overheating. How hot is too hot for an operating temperature for cast iron blocks and heads, and how cold is too cold? 165 degree stat works fine on my 305, it never goes past 170, I would consider 200 hot for that stat. Is that too cold?
i run a 180 thermo in all my engines - at this temp, it allows for the proper thermal expansion of engine internals while still maintaining a low operating temp. the cooler you can run while still getting your engine to the proper expansion and the oil the proper temp, the better. anything really over 180 is just excess heat that doesnt harm anything, but you lose performance due to having to run less ignition timing, and your fuel charge will be less dense. i run 160 in the summer myself and 180 in the winter. if you had to pick one for all conditions, id go 180.
my ford 390 has been running cool. It had a 160 degree thermostat in it - which I changed to 180 and it's still running at about 173 degrees. should I block off part of my radiator, or leave it?
You can block it off in the cold season to retain block heat better, since cast iron takes so long to warm up. As long as your pump is circulating coolant, it shouldn't overheat unless you're obstructing the radiator too much. I've noticed there's little water jacket block off plates on certain intake manifolds, I've taken mine out and it seems to be doing fine... why would they put those plates in there in the first place?
Thnx. I'm in California. Last night at 9pm it was about 60 degrees and my car was running at 173.
I Live in Southern California
The thermostat goes wide open after 5 minutes anyway.
It was common back in the day to run without one.
Temp your oil and see why that's a bad idea - an open thermostat is much different than no thermostat. The restriction is necessary to allow time to pick up heat and then to disperse the heat in the radiator.
Just because your coolant is cool, doesn't mean your oil is in this case
I have a 57 willies and it's got a 302 ,the center of the block gets warm 180 thermostat will not open soon enough, I am at 205 and then it opens but it's to late it wants to roll to 210 and I shut it off before danger,
Hi I have a diesel Toyota engine and I can't reach operating temperatures i recently replaced the water pump myself but didn't change the thermostat. Both radiator hoses are hot to touch and the heater still works? Do u think ive got a stuck open thermostat
You are exactly right, if people say remove the thermostat, THEY DON'T KNOW WHAT THEY'RE TALKING ABOUT. 🤔
even if the termostat stack closed? most overheating issues bec of termostat thats why too many car owners removed it especially on those hot regions ..here in the philippines 99% of the jeepneys dont have termostat and they driving more than 12 hrs a day and still its running on our roads for more than 50yrs..what about those new cars in the market with termostat? most of them ovearheat and dont last!!!! well some wise engineers deaigned a machines that dont last so that the flow of money still keep on coming..😊😊
ok so now correct if im wrong but if u have a carb with electric choke say a holley or edelbrock as long as theirs keyed power to it it will fully open the choke and so as long as u have ur carb set so its not rich then u should be able to get away with say running an engine at 120-130 degrees all day long (if u can even get it to stay that low) without doing any damage to the engine correct?
That eliminates a lot of the problem except the issue of thermal expansion. So at low temps, tolerances will be a bit looser. Causes a little more cylinder wear. I run a 160 unit myself
The thermal dynamic property doesn't change, the speed of the water flow is irrelevant, true you're car won't warm up as fast, and it may not ever get to the operating temp for highest efficiency. But it won't make your engine run hotter. I can go in deeper detail if anyone has a question
Jake Borg I have run with no thermostat in quite a few vehicles....almost always getting up to normal operating temp, according to the dash-gauge....just takes a little longer.
Me Me How is the power, does it idle smoothly when hot??? I would check for a blown head gasket/cracked-head/cracked-block.
Me Me It really depends on how much you like the vehicle......is it a beater/junker/near-junker??? If it is a nice vehicle, that you want to keep a while, I would get a definitive diagnosis on what is going on......that includes testing for a blown head/head-gasket. The sealant-in-a-can is risky.....sometimes they work, sometimes not, sometimes they cause more problems than they fix. If your head is blown and you do not want to get it repaired properly, removing the t-stat should keep you running for a while. I drove my 98 MPV for over 4 years with a blown head-gasket......ran fine as long as I kept the t-stat out.
Jake Borg thanx i have removed thermostate volve when heat light turn on i live in Pakistan
i have a bronco i bought without a thermostat and in a 302 and it is december i have heat still? why
If your in a hot climate and having over heating issues that you can't solve then, pop your thermo out. If that solves the problem then pop a restrictor plate in it. We run no thermostats in all out circle track cars and my father's drug car. Actually the mustang in my pic has no thermostat. Thermo stuck on a trio to PA so I pulled it apart on the side of the road and haven't put one back in it because it works fine for me.
The problem is that a guy can’t really tell - your coolant is moving too fast to pull away heat as effectively as if it were actually slower - if you had an oil temp gauge, it would actually read hotter while your coolant temp “appeared” cooler.
Can I make one 30 min drive home with a bad thermostat?
I take out my thermostat in my captiva 2008 gas 2.4... So now I don't see the clear smoke coming on my hood... Thinking and afraid without thermo might be damage the engine.. But I was afraid also if I put new thermo it might get hot again
My old Impala had a stuck open thermostat when i bought it, 160f at idle, 130-140f on the highway. PCM was not stuck in open loop though.
DarkLinkAD how do you know that it wasn’t? - and really that’s a model by model basis - like the 94 bronco holds open loop.
Another aspect is that water flows so fast that heat is not transferred - so the probe reads cold, but if you have an oil temp gauge, you will actually run higher oil temps
OBDII vehicle, you just log the PID's for short/long fuel trim, open/closed loop status.
Cant remember if the Impalas have an oil temp gauge, its been years since it was totaled with 225k miles IIRC.
I think you need more Research !!! We By-Pass our Trucks / We LOVE IT, this is our third year !!! Here is what we do to our Trucks... We use 2 Thermostats. One, is the By-Pass. The other is " Normal ".... The By-Pass... We use it for Summer... Then we Switch it back to " Normal " in November each year. NOTE: If you do a By-Pass.... You can Drill the Hell out of the Thermostat, LOL. You will only need the " Rubber Ring " and the " Round " part of the Thermostat, so it can sit in the " Hole " safely and it won't " Leak " on you. Hope that will help People who is looking to do it.... Hmmmm, maybe I can make a Video of it, LOL
I'm a mechanical engineer and build engines on the side. You all do what you want, but there are several solid reasons why not to run below 160 degrees. Wear your stuff out for all I care, it's yours - not mine lol.
+ThunderHead289 -Who died and made you the " Mechanical Engineer ". Its like People who is going to Pay to have a Trip / Vacation to the Moon, once they are back... They become Astronaut???? All I can say is, do a bit of " RESEARCH " first.... LMFAO
Jordan Bronson Till we find out that they filmed it in a Hollywood basement!!
@@ThunderHead289 , I have a question and not trying to be a jerk. I watched your video to gain knowledge and I appreciate the time it took for you to make it. I'm a fellow TH-cam video maker so trust me, I truly believe you're trying to help with the information you presented in this video.
That being said, I've read a lot of comments and you keep posting this phrase, that the coolant is moving too fast so it doesn't pull away heat as effectively. You're a mechanical engineer and I respect that. I'm a Navy nuclear mechanical engineer and we used the equation Q = mc∆T. And m = mass flow rate which is the equation m = rVA where r = density, V = Velocity, and A = Area. As you increase the velocity (V) of the fluid , not having restrictions by the thermostat, that should raise your m (mass flow rate). That in turn would increase your Q, the specific heat removed from the system right? This is what we learned in thermodynamics.
Like I said, I'm not trying to be a jerk and I'm more than fine with being wrong or learning that I'm looking at this the wrong way. But as a Navy Nuc, there is a part of me that really needs to know the answer in a logical way. What am I missing?
None of this is true I’ve been buying cars for 25 years ran thousands of cars without the thermostats to freezing temperatures different makes different models different miles different years and through the summer never once have I had overheating issue come on now
Since the 70's my father has been taking out the thermostat in every car he's ever owned...Now I'm 50' and I drive a 2004 jeep Cherokee without a thermostat... There's has never been a problem of engine failure because there wasn't one...And the only time I've experience over heating is when cooling fan failed while idling in traffic.
@@emilmar5466 Thanks for sharing this , and I am taking the spring from inside of the thermostat so that it won't close anymore, on my Toyota Prius V 2013 , that is built into chamber. I wish I did knew this before when I got stuck 2 hrs away from home, heading on long drive. So, I bought a after market one from nearby auto zone and put it myself , but , had to stop on the way back every 20 minutes due to overheating, and topping off the coolant. Now I now what to do next time. Rip off the spring that's inside Thermostat and refit the tstat so it'll let the coolant flow.
Thank you I just found out my thermostat housing did not come with t stat and my gas has been at least 10 to 8 miles a gallon with a v6 I was filling up every 3 days
Is that Red hose temporary? I am curious cause i am bypassing the heater core and wanted to know why u did that
That was my heater core bypass. Here is why I did this instead of a plug - I used to have a plug/cap on that port. Over time it weather checked and actually blew out. The way this is here, it will never fail. Though it is as ugly as all get out.
It’s not going to run dead cold. Especially a large engine like that.
hey if my check engine light comes on it's a standard but it is radling just a little but the you get it into hi Rpms it won't what could that be it's a Ford's ranger v6
Um, what?
though irrelevant, sounds like weak ignition. when was the last time you changed the plugs?
You can test your thermostat by buying a new one and placing them both in a pan on the stove and see how far your thermostat opens up compared to the new. And if not needed just take the new one back and get your money back. 🤔 Otherwise replace it 👍
Good vid , well done . Build On
DOPE VIDEO MATE NEW SUB HERE, QUICK QUESTION I HAVE THIS MECHANIC SAYS MY CAR DONT NEED THERMOSTAT N HE STUBBORN GUY SAYS SUM CARS DNT DEPENDS BRAND OR YEAR WHAT YOU THINK BRO IS THIS TRUE??
NEVER run without a thermostat on any modern car EVER. The car is design to run at operating temperature, and get there quickly, so your car will CONSTANTLY be in a state of "cold start" meaning the computer is throwing tons of fuel into the engine trying to get it to operating temp and it'll never get there. All that fuel ends up in your cat and destroys it. It also breaks down your oil and screws with the lubrication of your rings. And another side effect, since your coolant never gets to temperature, your radiator also never gets your transmission fluid to temperature either, and on my car that meant that the torque converter would never lock up since the atf is supposed to be at operating temperature as well.
I can't even believe that people would consider running without a thermostat in their engine. It would just take way too long for the engine to get to a better operating temperature. It's not just there to regulate flow at higher temps, it is there to stop flow at start up temps.
I do it in all my engines, but I use a thermactor air cleaner to keep the intake air at the proper temperature, my mileage went up 1.6 MPG.
Oh I never had a problem overheating, and the intake temp stays right, and every engine has went over 250,000 and oil lasts longer, I use edelbrock carbs with no choke, they run perfect!
I haven't had any overheating at all and drive the freeways at 100mph + a lot!
jack rohde man u so right. he dont understand nothing' if he talks like that. still appreciate is video work.
god hates Arizona is very hot. Do you take the thermostat off? Have you had any problems?
My 99 nissan frontier has no thermostat for 3 years and when its cold it blows hot air perfect and when summer comes around my a/c works beautifully with no problems these guys here are just myth busters dont believe the hype partnas...
Your ac has nothing to do with the thermostat in your car. Fact
Think he's saying the AC would make it possibly run hotter but it dont
"coolant flows so fast" through the head that it doesn't pick up the heat and it can overheat?
Yes there are side effects of running no thermostat but overheating isn't one of them, cylinder washing and fuel air ratio problems yes.
It won’t show up on a temp gauge, but you will actually see your oil temp increase quite a bit - it’s just not getting the heat out.
just solve my e30 m40 overheating problem, already change new radiator, waterpump, fan, viscos but still overheat, its overheat when idleing just like a broken thermostat or a weak viscos, but when i about to change the thermostat the previous owner didn't put new thermostat in it, slap a new one and its all good thanks man
+FajaRathalos yep, exactly. If it circulates too fast, it just can’t cool anything
Anyone run their car without a thermostat? My 2000 honda Civic keeps over heating within 15 mins? Can I drive without a thermostat if I remove it for a couple days? Till I get paid
onethree wemadeit take that thermostat out . it gives you false readings. Just make sure you have ample coolant....
@@cecegiles7753 false reading of what? Temperature ? It will show cold or hot?
I bought a used suv (1988 dodge Raider), the weather has been very cold so everything was fine. The first warm day (56 degrees) my truck overheated. We had several warm days and my temps got high, but not in the red...blowing coolant right through my overflow tank. I thought I'd check my thermostat. Pull off the housing...no thermostat.
now just wait a minute, my old farmall has no water pump, and no thermostat. it came that way from the factory, but that is not the same as my truck or jeep...
It's aircooled
brand new just replaced
New thermostat arriving in the mail later tonight I have to go take a drug test for parole keep the locked one on that's been burning up my fucking engine and oil and making my engine overheat cuz it's locked in the place my hose feels like it's going to explode burn up the engine or have it cool so I can run over here real quick I rather have my engine cool it's a truck it'll be fine nice big Pistons my engine oil is fried I'm not doing it