Thermostat Housing Replace and Bleeding Air from Cooling System - 2015 Jeep Wrangler JK 3.6L
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- เผยแพร่เมื่อ 4 พ.ย. 2024
- It's time to take care of that leak! I wanted to do this before the Moab trip, and I'm running out of time. So, today was the day! In this video, I change out my thermostat and housing assembly. I didn't drain the radiator for this, and then I show how I bled the air out of the cooling system with help of a spillproof funnel.
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Here are the parts I mentioned:
EPAuto Spill Proof Radiator Coolant Filling Funnel Kit:
amzn.to/2MJad4f
MOPAR 5184651AH - OEM Part - Thermostat and Housing:
amzn.to/2o28CbK
Here's what MY manual says about the coolant I need:
MS-12106 OAT (MS-90032)
The engine cooling system must be protected
with a high-quality antifreeze coolant to provide
proper corrosion protection and to protect
against engine overheating. A solution of 50%
OAT (Organic Additive Technology) coolant that
meets the requirements of Chrysler Material
Standard MS-12106 and 50% water is recommended.
Refer to “Maintenance Procedures” in
“Maintaining Your Vehicle” for proper coolant
selection.
MAKE SURE YOU KNOW WHICH COOLANT YOUR SPECIFIC YEAR NEEDS. It's confusing I know. Check your owners manual!
Did this today. Worked great. One improvement. After you reconnect the hose to the thermostat housing. Remove the other end off the radiator. Refill the hose from there and bleed the last bit of air from the housing. Reconnect. Less air to burp.
Exactly what i do all the time in my jeep and m3
I just had to replace the thermostat, radiator hoses, and flush the coolant in my daughter's Jeep. After watching your video I ran out and bought one of those no spill funnels before I started the job! What a terrific invention!! It made bleeding the air from the system so much easier. Thanks for the video.
Saying you’re the best would be an understatement ! Helped me out so much !! I speak for all attending this sermon when I say THANK YOU !!!
Have had cooling issues in my wrangler since 2016. Tried everything, even had Faricy Boys look at it. My normal operating temps ranged from 220 to 245 daily to and from work at Garden of the Gods to Stetson Hills Monday through Friday. Ran across your vid and wouldn’t you know it. No more issues after following your vid step by step. Now temps are 206 to 220. Appreciate it
I'm having that same issues with my jeep. Had faricy boys do a thermostat and coolant flush. And it helped alot. But still regularly see it go up to 228-230 and just randomly it'll go up to 235 or more then right back down. It's gotta be air bubbles in there.
Everyone told me I had a cracked radiator, but I didnt see any stains. I ran into this vid right before running a pressure test. Bingo! Thank you!
I’m so glad my thermostat is on top of the motor and not under all the stuff
OMG! The flip flop comment wat priceless. I hope you win a TH-cam award for that
Just below 70k on my 2014 JEEP JK. Live in south east michigan, saw steam coming from the hood. Radiator cap was cold. Few friends suggested air in the line from a faulty radiator cap. Been running my jeep without a radiator cap for about 30 minutes,no funnel, and keeping an eye on temp and bubbles. Great video, thank you.
I got a lot of respect for this guy. He straight up walked away from this jeep. Thats hard
Great step by step video. I watched several. Some bled at bleeder but didn't "burp". Others just "burped". You did both and that's what I plan to do. Of note when rinsing with water I usually cover the alternator. Sure, rain/street water can get up there (usually not as much flow) but I've replaced alternators on other vehicles as a result of alternator corrosion from hosing down engine bay without covering alternator. Thank you!
Just did thermostat and coolant change, as I have 150,000. Excellent video, by far the best help for me. Thank you!
Did you have any issues that made you replace your thermostat and do a flush?
Just ran into this problem but I found out my radiator was cracked at 1am driving home from work. I had thought it was the thermostat had ordered one and my wife then told me just get it and change it out and then put the new radiator on so that's what I'll be doing this weekend yay lol great video
A quarter, (instead of a screw driver), works well for the plastic bleed screw.
Wow, great thank you. Best part was the Spill-Proof funnel for purging air from system. Keep em coming!
Wow 622000 miles. Killer video. Very informative
Pressing down the gas pedal while the rad cap is off will definitely make the coolant overflow from the funnel or anything else. Just let it idle nice and steady on its own that way you won't have a mess with coolant.
Dude! I followed your steps and successfully replaced my thermostat tonight! Thank you so much!
With your video I was able to make this job quick work. Thank you for Awesome instructions.
For what it's worth, your vehicle will do this on it's own over time. Fluid comes and goes from the over flow tank and it has it's own air vent to allow air to be released out of the system.
Thank you for showing how to do this without flushing your whole system.
I used this funnel system on my JK & it worked awesome!!! Had a lot of air bubbles in my system & was funny to see it work itself out. Great product brah 🤙🏽🤙🏽🤙🏽🤙🏽🤙🏽
Perfect instructions! Just finished. Got the funnel and everything. Only thing...when I took the funnel off with coolant still in it...at the bottom of funnel, coolant came out big time. I guess from the radiator. It was a blur and coolant got all over my arms. Yes, I am not a motor head so don't make fun of me. :)
I have the same year and have had the infamous coolant smell since new as do many others I know who own the Jk's. I've had 2 rads replaced, oil cooler, therm. Housing. Timing chain cover, three pressure tests and as of today I can still smell coolant and lose it over about three months. It still passes the pressure test too. I've gone over hoses, checked the oil cap and oil for coolant.... All clean. its a pain in the ass but I've learned to just live with it.
The only thing I didn't see you mention in that list of things you've replaced is the overflow container. I actually did a video on replacing mine because it was leaking. I'd be surprised if that's not your problem, because of everything you mentioned this could still seep a little bit and you not be able to see it visually and it will still pass all the pressure tests because that's not part of the overall pressurized system. Just a thought.
I’ve read that else where about the Bottle. The OAT has that strong smell and those bottles do vent. Thx for the informative video and bottle tip. I’m really handy with tools and hate dealerships. When the weather is warmer I’ll replace my over flow bottle.
Have a great holiday! 👍
Thank you for putting this video together. You did an amazingly good job at videoing everything....very good illustrations ! I have been dealing with my wife's 2014 Jeep Wrangler Sport with 3.6L engine. The heater hasn't been up to par these past few months, and she took it to a repair shop and they 1st flushed the heater core and topped off the fluid. It acted up again and didn't provide heat like it has in the past, so she took it back in to the same shop and they flushed the entire radiator, block ect......I think we have determined that the cooling system is clean and has new OAT type coolant in it. You are correct about NOT mixing HOAT with OAT type coolants, and to be clear the 2014 Jeep Wranger also uses OAT Type coolant. If mixing occurs it will cause a gelling effect on the coolant----very bad ! I called the repair person and he and I spoke about the attempts to repair and he said it may very well be the heater core. I've used my Fluke laser heat detecting gun and the heater hoses are getting hot all the way to the firewall---on both inlet and outlet sides of the heater core. I would suppose you changed the thermostat housing mainly due to the housing leaking, and didn't change it due to an "engine code" ? I noticed that you didn't use a sealant in addition the the rubber "O-ring" gasket for the thermostat housing. Did you find the hairline crack in the housing by chance ? By the way I love the American Flag in your yard !
Thank you for this tutorial. I’m a new Jeep owner and I don’t have much mechanical experience and I want to learn how to work on my own vehicle. This was a huge help. Thank you!!
Just a point of interest: There is no heater core valve! Just dampers. therefore it does not matter where the temperature dial is set...The fluid is always circulating through the heater coil...
8/28/24 I got my 2011 Grand Cherokee 3.6L back from a water pump and thermostat replacement. The upper radiator hose was collapsed and was COLD. I opened the radiator cap, and it SUCKED AIR into the radiator.
LSS. I bought the bleed funnel kit and did the procedure MYSELF. The engine bubbled air into the funnel for THIRTY FIVE MINUTES before I saw color (coolant) mix in the funnel. Oh, the dealership had it for 26 days, swore they couldn't get a thermostat. I drove twenty minutes down the interstate and bought one from another dealership, and HAND DELIVERED IT to the service manager.
Thanks bud. The most detailed I’ve seen so far.
thanks a ton for the video dude! 2012 jeep wrangler sport, just took about 10-15 minutes to get apart, replace, and put back together.! (bleeding took a bit more). Good reminder on the anti-freeze animal connection, it's an agonizing terrible death for a beast that meeses with that toxic shit. blind, crazy, in agony then dead. save fluffy!
I have the spill proof funnel and have used it. It works great.
Great video really showed step by step. I have the same problem with my Jeep and now I feel confident that I can complete the job myself. I will post the results later. Thanks
I watched several thermostat videos and this was by far the best and most informative. Great job of showing all the steps clearly.
How long do you think you ran your Jeep until all the bubbles came out?
Great video. Would love to see you do a video related to your experiences with the JK's wide coolant temperature swings. I see 200 to 230+ regardless of ambient temps and altitude. I've never driven a modern vehical where the coolant temp gauge swings a bit above the center point when everything is running right. Seems like there are a lot of posts about this on the forums. Any opinions?
same here dan
Thanks for excellent video. I just changed my 17 JK radiator and could not get coolant to flow and was dumbfounded. I was not aware of the air bleed on the thermostat housing. Thanks to your video I was able to bleed the system and was in business immediately. Also purchased the funnel...nice tool to own. Thanks for the tip!!
Good to know bc, I just replaced my radiator and burping the system on an incline does nothing and engine overheats...I'm going to use the bleeder today..
I hope this works!
Doing this right now, I've also had mine leaking for about 2 years. It didn't seem to fix itself so I figured it was time
Your video was GREAT!!!! I had trouble with this til I saw your video. Thanks.
Great video as usual, but you do not have to turn on the "heat". Coolant flows through that heater core whether you turn that knob or not. When you turn that knob, you're only moving the BLEND DOOR ACTUATOR inside the air ducts to divert air around or over the heater core to get hot/cold air inside the cabin.... it doesn't change whether or not coolant flows in the heater core.
Some people stick to turning on the heat because some vehicles have shut off solenoids that prevent the heater core from circulating with the heat off.
I don't blame you for not draining the radiator. I flushed my system before my Utah trip and the petcock is a major pain to access.
Great video. I'm doing my wife's 2013 today. Thx for sharing.
Thank you for the detailed and informative instruction on this project, just enough info for me to do it myself.
If the coolant keeps raising out of the funnel, would that be a sign of a bad thermostat? I replaced the water pump recently, but replaced the thermostat in Feb.
Appreciate the video, plan to change out my anti-freeze when I install my supercharger coming up. Appreciate the link for the funnel, looks very handy for the bleed procedure.
I will recommend to Drain the Radiator just alittle to avoid that Mess. I did drained my radiator for just a minute and i had no mess at all went i disconnected the Hose.
Great idea to use the tub. Definitely using that one in the future!
Great video man. I have to say, It is a shame that jeep is an automatic!!!!
Thanks for sharing! This what I’m looking for.Best DIY video tutorial so far ✌️✌️✌️
Thank you for creating a well-oriented video. I have the exact same leak on my 2013 JKUR. Thanks to you, I know exactly what I need to do and buy. You have a new subscriber. Bravo Zulu!
EVERYONE! Look for almost invisible cracks in the goose neck of the MOPAR thermostat housing. It took me FOREVER to figure this out! My coolent level was always slowly dropping, but I couldn't figure where or how because there was never any visible sign, just a very faint odor of coolent. (Problem even continued after switching out the oil cooler.) When the check engine light told me to replace the thermostat at the 6-year mark, I found red goo on the thermostat housing dried over almost invisible hairline cracks in the goose neck. (I needed a magnifying glass to see them!) The coolent was slowly leaking out and evaporating before it ever had a chance to drip.
I found out if you wait to long to put the cap on the radiator while it’s running , it will boil over . Shooting out of the over flow funnel
How long was “too long” ?
Thanks !
Many videos here on TH-cam don’t show prober bleeding the technique for doing so
Absolutely fantastic video! Very informative and to the point, with no typical TH-cam video bravado. Thanks!
How many miles we're on your jk when you replaced the thermostat?
Man you rock!!! Thanks you saved me a pretty penny!
Thanks for the video, When you used the spill proof kit and were done, did you plug up the funnel and remove it put the radiator cap back on while the engine was running ? Thanks . I just did that and now wondering if I should have done that after turning the jeep off.
Awesome vid, truly helped me out. Thank you!
Thank you so much! Saved me thousands
Great video, I like the funnel, thanks for the help.
My question is did you need to add more coolant somewhere after losing all that coolant removing the hoses? I mean I seen you put some in the funnel but it seems like an inch in there isn't much to replace what's been lost? Or am I wrong ?
Thank you for the video. Going to knock this out this weekend.
Well done and detailed video. Thanks!
Before replacing any coolant part that you think are leaking pressure test. He didn't even know what was leaking it could've been the hose clamp, water pump leaking down to the t-stat housing. Also for bleeding vacuum the air out is the must efficient way. Tampering with the bleeder bolt could cause future leakage from the plastic bolt. Pressures test before and after. if you dont have one auto parts stores will lease you one.
@Juan Bugayong a coolant pressure test before and after is part of the procedure of replacing, the thermostat housing. That coolant gadget on the video you use, to get the air pockets out from the coolant system is a no no. One needs to get the air out before you even start the vehicle running your vehicle high rpm with air pockets could damage your thermostat. Vacuuming the air out or using your pressure test. Also. if your going to shower your engine it's best to air out. Using a shop air nozzle. Water is never good for the connectors insulators with time they will become brittle and allow water to enter the connector.
Positive pressure in your jeeps coolant system might harm other components.
If you would do this protocol to find a leak you would have to run the engine to normal operating temperature because more than likely it is a thermal fracture and only leak while the coolant is hot.
Maybe this method will work on other engines with aluminum T-sat housings and or aluminium upper and lower intakes manifolds.
the best tutorial on the procedure ever, thank you. How can I get a hold of this funnel?
I got mine on Amazon. I think I put a link in the video description
I also have a 2009 Chevy Aveo5 (42,200 miles) with check engine code p0599 thermostat heater control circuit high. I believe I could change the thermostat part with this tutorial vid. Thanks.
Hey CPO, thanks for the video, been a great help trying to burp my system as well. One question, how do you get the coolant in the funnel to stay so calm over 210°? Anytime I get near there, the funnel starts to boil over and overflow, and continues to even after I shut the Jeep off. Any tips on how to stop the boil over? Noticed you had yours up to 219 and still calm as a lake. : )
It boils over because when the radiator cap is off the system is at atmospheric pressure therefore the coolant will start boiling around 205-215 depending on your altitude. When the cap is on the atmospheric pressure is much different and the boiling point will be roughly 40-50 degrees higher.
Why do these jeeps run so hot to begin with? 205-220 .
@@overheadcam32 220 really isn't that hot for coolant. The coolant in my Cummins regularly reaches 230+ when I'm working her. The temp of the engine shouldn't rise too much if the cooling system is working properly.
In my opinion it's a good idea to change the upper rad hose with the stat change after 5 years.
Thanks for the video, very helpful! 😎👍
Is it possible to do this without the fancy funnel?
yes
Maybe in my JKu is the same problem but I observed that coolant reserve tank loosing coolant not so much but there are not leaks around engine I will try thx for it
I have the same small leak on my jk it’s been over 1yr since I spotted the leak haven’t been forced to change my thermostat but will soon! I do have a couple of questions for you.
1- did your check engine light ever went off?
2- did you ever see your temperature gauge move slightly over the normal temperature?
Got the same leak, Check engine never appeared for me thank god, but my temperature guage does go a bit above normal
2015 JK Sahara with 126,000km on it
Just had mine replaced. I hope that was my leak.
Are those the OEM recommended flip flops or aftermarket? I must know this before I attempt to proceed with the thermostat replacement.
Same leak, replaced, thanks for your helpful vid
lol Sweet mirror! Automatic wave
The problem is was actually the thermostat was starting point to get locked thats why you had pink stuff off spilling and around the pipe..the water pump makes preassure so when the thermostat is dying it starts doing that pink fluid because the preassure of pump is not going thru out the all system rigth because is not properly closing and openig rigth...thats a good way to know to change your thermostat before it gets locked and motor heat up...
Good job very helpful 👍
2019 jeep wrangler jl sport 3.6 does not have radiator or drain plug, so for this how do you flush and refill coolant on this jeep?
Hello mate.i got mercedes a class 170 ,2005..my car blow air but dont give warm air..what i can do?all works before to i go in holliday,when i comeback give low warm air,but now it stop give warn air inside the cabin..
Just flushed my system and didn’t realize...How much fluid do you use to refill your radiator?
Can I get the part numbers for the flip flops please? Thanks. 😋 Jokes aside. Nice work and thanks for making the effort to document.
At 5:10 , Would it be less messy to drain from the Radiator Petcock about a gallon or so. This aught to drain the upper coolant hose. Or am I wrong ??
I’m curious why you’ve needed a radiator, coolant bottle & thermostat on a 3-4 year old Jeep? Wheel’n damage?
Radiator cracks as re pretty common on this year. Was covered under warranty. The thermostat housing is another common failure item... Just not sure why...
In the words of jeep service employees "its a jeep, its suppose to do that!!"
yeah just like the engine is suppose to consume a qt of oil every 1000 miles. Unreal
Excellent detailed video... loved it
There is violent leaking from my thermostat housing, how can i tell if it is the thermostat or if it's the housing? It's a 99 ford explorer
When doing the bleeding with the funnel and coolant in it attached and engine has been at operating temp for a while, what does it mean if I get bubbling of coolant in funnel for a long period of time? Not just a few bubbles but a pretty regular bubbling once hot and then when turned Jeep off it got violent bubbling and overflowed.
This same happens to me!
Do you know why it's happens?
End after that yours engine is still fine?
How long do you burp your system for?
When I use this coolant bleeder setup, eventually coolant come churning up and then it's like a volcano of boiling hot liquid going everywhere. Shut off the vehicle and eruption keeps going and then it all sucks back down dry... have no idea what's going on.
HELP! This was a great video! I replaced my thermostat and then started to bleed the system with the same funnel you used in the video. All went great. I started the jeep and Bubbles came out, then the thermostat opened maybe 15-20 minutes later and more bubbles came out. I reved the engine to 2000 rpm and more bubble came out. After about the 30-40 minutes of this process the level in the funnel rose quickly and spilled(boiled) over the top of the funnel. I quickly shut the engine off and the level receded in the funnel. I turned the jeep back on a couple minutes later and the same thing happened again. Needless the say, it made quite the mess and I am doing much more wash down than I though I would have to.Why is this happening? Any help would be greatly appreciated.
Did you ever get this figured out?
@@danmulkiewicz5515 Yeah too bad there was never a reply to this. My guess would be that there's an obstruction to the flow somewhere. Possibly a clogged radiator or bad thermostat. I'm in the middle of a similar situation but don't see anything to help in these comments yet..
@@Dannynjoni Any follow up on your situation? Did you ever figure out how not to get the violent overflow?
@@Dannynjoni Good day Danny, I have the same problem, you solved it
Good morning Brad, I have the same problem, you solved it
If I may add not saying what you did was wrong or anything but anytime you torque a steel bolt to an aluminum anything re torque that bolt after you run the engine or it will loosen on you down the road.
How long did your Jeep sit there and idle, an hour??
So i tried this today, it ended up overflowing and making a big mess. not sure what if anything i did wrong.
I have a 2016 jku Sahara with the 3.6 l. My jeep did not come with a manual to tell me what type of coolant to use, can someone tell me?
Great video, who makes that funnel? Thanks in advance.
where did you get the palm decal for the mirror.. save my hand from waving! also the temp question.. how does it appear in the dash.. I have a bully dog it can be displayed on.. Thanks for the tip.. I am getting a DTC code .. and it looks like coolant temp issue and I am trying a new thermostat
I have the EVIC system in mine... so I can display the temp using the steering wheel controls and read it on the dash.
Just had exactly the same thing happen-- hairline crack in the thermostat housing, leaking just enough that i could smell it.
Your thermostat was perfectly ok dude. The leak was from the clamp on the hose.
😂😂😂😂😂😂😂😂
Where did you get the tourque specs? I need to replace both the thermostats and oil filter housing on my 2014
Did you destroy the hose clamp with the pliers? Because after an edit, it is gone at min 5:00
Flip flops too tight? lol
Great video. No worries of brlt slipping from the water rinse?
Question: Did you wait for the engine to cool down before you took off the funnel?
No... just turned off the engine and pulled it right off. There is no pressure build up in the same way you'd have with the regular cap. The coolant is hot... but other than that, it's no issue to pull it right off.
Ohhhh okay duhhhh stupid me LOL. That makes sense now, thanks!
I'm not getting a code at all but I'm not getting hot air either. I checked my fluids and they're okay. I'm just wondering if I should change the thermostat as a precaution or should I just try burping the vehicle. What are your thoughts?