Jeep Overheating! Bolts didn't make it back in! Jeep Grand Cherokee 4.0
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- เผยแพร่เมื่อ 29 ก.ย. 2024
- This Jeep Grand Cherokee Laredo with the 4.0l straight six engine came in. The driver said it needed a water pump and the thermostat had already been replaced. During the inspection we found that thermostat housing was leaking antifreeze all over the serpentine belt and the water pump and cooling fan was blowing engine coolant all over the engine compartment. Further inspection revealed that the thermostat housing bold was threaded between the thermostat housing and a metal heater core bypass hose that screws into the water pump. We removed the thermostat and housing and found orange RTV silicone sealant covering the thermostat gasket. The bench grinder with a wire wheel was used to restore the sealing surface of the thermostat housing and the thermostat was reinstalled with the radiator hoses and heater core hoses. During the test drive, the engine seemed to misfire and backfire. There is no check engine warning light on the dash.
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”Intro Music by Karl Casey @ White Bat Audio”
Thanks to Jesse for making the intro and graphic for us to enjoy!!!
This is a "I KNOW SOMEONE WHO CAN DO IT CHEAPER" moment😊
Yeah amazing...I'm of the opinion that something this critical. Let a reputable shop do it. Chances are they will give some sort of guarantee/warranty so if they botch it it's on THEM but you do it cheaper and botch it it's on YOU. Spend a few extra bucks get it done right
@Jed1421 and then it started leaking and over heating so a professional with insurance was the last to work on it in case he cooked it.
Hey!! Cletus done the best he could after and for a case o beer!
The jeep dealerships so overworked replacing parts that are not bad, they rushed the job only to tell him his water pump was also bad!
But also the case of beer concept works, in many cases its the same quality of work. Most the guys at the dealership got sick of the games and opened there own shops like Raymond has.
@@bobbg9041 "........ replacing parts that are not bad,...." Awesome. Classic stealership move!
Nice, you saved him from needlessly buying a new water pump!
The total of labor is still probably more than the blue book value of the whole vehicle. The customer is OBVIOUSLY an absolute imbecile.
You know, I was considering buying a jeep. I've always liked them and now they are coming out of the factory with lifts and nice wheels, trying to entice me but after seeing the litany of problems Jeeps are prone to I have changed my mind and I'm sticking to my preferred makes and models...great video, thank you Mr. Ray. Have a great day and an even better tomorrow...
The AMC/Chrysler 4.0L inline 6 is an excellent engine. But like all vehicles, they are only as good as the maintenance that the owner does. Now, the Pentastar/Fiat engine and transmissions are pretty much junk.
The 4.0 is a great motor but have a bit of chatter on top end and high fuel consumption.The 318 in older jeeps are also good motors but suffer from high fuel consumption.@@mattbrown5511
My 2014 needs a head gasket at 72,000 miles!
My '06 has had 2 clutches put in and it swell over 150K miles. I also had the timing chain done at 100K just ease of my mind. And the clutches were my fault for training my daughter to drive manual in it.@@dogsense3773
Nice to hear Led Zeppelin on the play list for a change !
That's Led Zeppelin, just FYI
shhh
@@johnhpalmer6098 Auto correct strikes again.
@@johnhpalmer6098 Make a stairway and get the stores open.
Scorpions as well! Awesome playlist!
9:17 omg someone really jammed that thing in there and got some torque on it! Amazing. "Not sure if it's in the hole, but I'm just gonna send on er!!"
Would love to know who worked on the thermostat and to see the Jeep owners face when you told them what you found
Troy?
That radiator top rubber hose looks like a sponge. It's definitely too soft. That idler pulley look like is at the end of its life. Those misfires are quite severe, never seen anything that bad.
From Randy in Chattanooga, Tennessee: Yeah. Antifreeze will find a leak before water will.
I agree with everyone! Who ever attempted the bottom bolt totally missed the hole! That wasn’t an accident. Guess they should have put hair around it! 😅
0:49 touched R2-D2's funny button
That Jeep is one of those “it doesn’t look too bad, but it needs a metric ton of minor to moderately major repairs … the question is whether it’s worth doing those repairs to the owner.
Those damn jeeps.
looks like that air filter could use a change or a cleaning
you do know about YT copy right strikes when music is playing in your video.
Im thinking the person that replaced the thermostat thought they screwed the bottom bolt home but missed the hole and tightened it the way you found it 😂😂
Exactly my thought....
1000 agreed and def wasn't a true mechanic because they would've realized it wasn't tight as well as the top one
Definite diy attempt fail
Exactly
Kinda makes me feel sorry for his wife.
Dare I suggest that the owner found the limits of his automotive expertise and botched it all?
Once replaced my spark plugs in my 76 Mustang II and it ran horribly missing. Not knowing what was wrong took it to my mechanic Mario (Italian). An hour later he called back to get the car. I showed up and he's smiling at me. "Who muck upa da plugs?" "huh?" "WHO MUCK UPA DA PLUGS? She'sa cross treaded in number 6" He dropped a helicoil in and checked the rest, but his response to me always stuck with me.
I concur.....sir.
RTV on the cooling system always indicates somebody didn't know what they were doing. (I totally have done that before 😭)
I’ve learned that most men think they are auto mechanics, body and fender repairman, and lawyers! 😂😂😂
4.0 straight 6...good engine. Lucky for this owner they're hard to kill
Bro I shit you not I ran a straight 6 with 220,000 miles on it for like 6 months with no oil until it finally blew on the freeway one day. Those little motors are fucking bullet proof.
I'm a rural mail carrier and my 4.0 has over 500,000 miles on it. :)
Because it was designed by AMC, not Chrysler.
Some of the early ones have a bad head. But they are not terrible to replace.
@@johnquinn4680Imagine how long it would go with oil! :)
Man, sometimes when you're drunk enough, you might get the wrong hole, or no hole at all, and never even know the difference.
funny
We can all pretend you were talking about the blind threaded holes for the thermostat housing, right guys?
If only the motor could say wahoo
Id say he missed the hole by a ____ hair.
Ray, I see you are using a "Jeepers Creeper" on a Jeep! It's Friday!!! 🤣🤣
I wish more people were like Ray .. you can tell he truly cares about doing things the right way ...
I'd put money on that someone put that screw there thinking they had it in the screw hole.
I said the same thing
Agree totally. I think Ray was just being nice, and not saying the obvious. Bucketing the owner or a mate of the owner may not be good for future business.
I was thinking the same since he used the powered ratchet and it came out like a bolt would from a bolt hole but didn't when he tried to pry it out.
The 4.0 Inline Six was one of the BEST engines ever made! A shop I worked at near MOAB Utah used to upgrade these engines with performance parts. These engines like to have their oil changed on a regular basis (every 3,000 miles) regardless of the type (regular or synthetic) and their coolant changed more frequently (every two years). Other than that they are fantastic engines (almost bullet proof)!
And don't use the 0W-20 oil that you put in these newer cars. This motor is old school, it wants real (thicker) oil.
@@stevemccooleq Yep! We used a 10-30 in the winter and a 15-40 or 20-50 in the summer (desert).
My friends dad was a mechanic. One time a guy who didn’t speak English was showing him that the horn didn’t work. Glen opened the hood. The wire came off the horn. He put it back on. The guy tried to give him money. Glen laughed and said no. He was such a good influence on me. A good honest man like Ray. Glen’s wife was such a sweet woman. Like the wife unit. They both helped me a lot. From the age of 13.
Is the check engine light blown out? No flashing CEL... Also why are you suspecting valves before plugs and wires are looked at? As you know it can also be a fuel delivery issue... weak pump, fuel injectors, etc...
Very enjoyable! Hopefully the owner will allow the addressing of the backfire. Have a great day!
When Ray is playing cleanup man on someone else's work this video is his insurance.
FWIW: You might want to consider going down to Lowes, HomeDepot, etc. and buying a couple of black plastic motar boxes to mitigate various wide spread, potential oil, or coolant spills in leu of those small, green plastic pans that you tend to use. Just a thought now:-)
PS: they also make for great canine beds after throwing an old blanket or two as a mattress.
They make a great cat litter box also.
That jeep is supposed to have an electric cooling fan, not mechanical.
never loosen those plastic petcock . if it breaks ur screwed... just use the lower hose....
How many times did the engine over heat, with the amount of coolant leaking out of it. Could have a head warped, and blowing between cylinders as well. Whoever worked on it before should have known that there was a problem with it leaking. They may have told the owner that the water pump was a problem in order to past the blame on something else besides their failure.
Some mechanics would have up sold, the owner a water pump and only fixed the real problem. Thank you Ray for your honesty and for taking us along, great video sir.
I would guess that whoever attempted to do one of the easiest fixes thought they blindly had the bolt in the hole and screwed it between the housing and hose. It probably bottomed out and they thought it was tight though tight didn't seem to matter on the other bolt
The 4.0 Liter Engine supposedly was one of Best engines ever put into Jeeps, I have never heard anything bad about them...
They managed to screw it up with the 05-06 wrangler self destructing oil pump drives
If you start the bottom bolt by fingers then jam the socket against the belt with the free hand it will deflect enough to let you tighten it....I was in there four times in one day testing thermostats so I figured out what worked.
Letting it run about half an hour REEEEEEEE Greta Thunberg is mad right now.
I've pretty much gotten to the point with my 97 XJ that when it comes time for a cooling system service, I just replace it all in one go.
Parts are so cheap, and you have to take it all apart anyway, why not?
Hi Ray ------- Curious on the bolt that missed the thermostat housing that was wedged in, the bolt was cranked into a metal line in the front of the engine (vacuum line going to the HCV?) so that may be causing your timing and backfire issues? Removing the wedged in bolt that was cutting the metal tubing and created a vacuum leak and rough idle and backfires.
Almost dumb enough for an episode of.."Just Rolled In"...Or stupid human tricks.
Love them 4 liter inline 6 engines.
water pump not installed correctly..,.leaked...overheated...brew a gasket?
I just subscribed to your channel because at the end of the video I just watched you said- "If you don't like this video or if you don't like me... I don't care. I don't like you either." Awesome. THAT'S the kind of guy I will subscribe to! 👍
With thermostat housings I use my belt sander or some sandpaper on a flat surface. I have seen some housings bowed quite badly.
How much is a new housing? I would go with, since you’re in there.
I always say to customers who suggest to me what to do that, "If you knew what you were doing, I would not be here!"
Not sure how they did that, but whoever did it, I feel bad for their wife/ girlfriend if they're that bad at finding holes.
They probably thought they were screwing the bolt into the mount hole but missed and got it screwed into place where it was?
I gotta have one of the kiddie toy coolant funnel sets.
thanks for the better shop music.
I was glad you cleaned up those bolts, I was twitching a little before you did. 🙂
Fixing a Jeep is like fixing a disposable cigarette lighter.
Looks like that Jeep needs some more work, but the guy may not want to spend it.
This is one for "Just Rolled In", given the state of the water neck and the RTV smeared around, I have a hard time believing that bolt walked itself out. I can't award a benefit of doubt on this one, but sufficed to say, we've all made rookie mistakes.., anyone who says they didn't is lying.
Moreover....at the end of the day....
Whoever changed the thermostat should've been watching Rainman Ray Repairs instead of a Ray Charles.
Love the proper clock on the top of the dash
Troy's spider senses are tingling...🤣
Nothing will fix this issue faster than Orange RTV and some 4 non blondes.......LOL.... Thanks for the video Ray
If I'm not mistaken those bolts go into the water jacket! You should have put gasket sealant on them.
Love working on the 4.0L. Best engine ever!
I'm sure that it is not the first time a guy has said " i thought i had it in the hole"
Got over 650k on my 92 Laredo. Never cracked a valve cover. But the I am a preventative maintenance guru.
If I recall, the later model 4.0 engines had head or headmaster issues. I believe it was the post 1999 years. Anyone else see that?
2000 and 2001 model XJ had head problem.
Just because some people can work on their own cars does not mean they should.
Is that the same JEEP that had the wrong offset wheels??
Much like wearing a thong!😊
Why don’t you use a coolant system tester? You can pump the system up and see if it holds pressure
At 8:45, the song Welcome To The Jungle is a good song for the quality of work by the owner.😅
Ray stuff a rag/papertowels into opening before clean up to keep contamination out of head. How about system flush before thermostat install,if head looks that bad, radiator/ heater core probably bad too.
Don't you have a cooling system pressure tester? To test for head gasket have a combustion gas tester?
Maybe the client did not approve that extra expense...
@@wayneessar7489If thermostat/waterpump cost was ok a few dollars more than the gasket was still well below authorization and good insurance with that level of corrosion/possible system blockage
Great video Ray, as usual. That backfiring is strange. Those usually last 200K without any serious problems. Several of my friends own Jeeps with that engine and we've only had to change water pumps, thermostats, and power steering pumps. One of my friends has an old CJ with the 4 cyl.
OTOH, it seems to happen more on the 3.7 V6s! The 3.7 V6, which was usually only used in the Liberty, were used in 2006-2009 (or 2006-2010?) Grand Cherokees. They were also used in Durangos right after the 3.9 V6 and 318 V8 got discontinued. (after 2001, most likely) If you have the 3.7, prepare to get another ECU. :(
The biggest problem with the jeep is it's a jeep.
There was coolant on the fan shroud. 🤣🤣😂😂🤣 ok, ok... it was just a drop, but it was there. 😂😂
Whoever replaced the thermostat put the top bolt in and the bottom bolt was out of his sight. He misplaced the bolt under the thermostat housing not in the correct hole then ratcheted it in. That's my take on what happened.
That Heep gave a whole new meaning to Shade Tree Mechanic .
That jeep needs moooore work for sure
no offense, but that a roached out jeep...
Leaking valves? Yes with a p 300 code. As you know this head has inserts for the valves. I replaced my head with a improved head (heavier) that corrected a cracking problem in stock heads. Dealer wanted to rebuild the head. NOPE! No more problems and was cheaper.
customer installed problems???
She sure knows you gotta keep healthy
It's a mass of "Jeep Things".
Had work done at The Blind Mechanic down the road.
Jeep specific creeper… my aren’t we moving up in the world!😄
Sanding discs on an angle grinder make much cleaner cuts (ask me how I know).
You need to add a tee shirtor stickers that says " Which is not ok"
Ray....................xlnt vid as usual. May I make a suggestion ? Um....er........ PLEASE don't use a grinder in that state. Bolt it to the bench, put the guards and tool rest back. I saw a guy nearly lose his sight once on an improperly amounted unit and it's the first thing auditors look at during a Safety Inspection. Good grinder = probably a safe shop.
Hope you don't mind. If I lived closer, I'd fix it for free, but it just snowed here so I can't.
Check the plug wires Ray. They very well could be the originals and are deteriorated and saturated with anti-freeze which could make them arc to any metal they are routed close to. That condition could also be exacerbated by the spark plug gap being too wide.
That Jeep is what we call a POS.
I bet it has a weak fuel pump.
Sadly, my father's 3.7 V6 is acting a lot like this, with the bucking! (2012 Liberty, one of the last in production!) I expect it to epically fail emissions testing before it's repaired! :( That's why he's been driving my sister's 2021 MY Cherokee, with the Pentastar 3.2.
Thermostat problem not noticed - air bleed hole missing. The Jeep Service Manual (I have the 1996 edition, see pages 7-32 & 7-33.) states there should be a 1/16" to 3/32" air bleed hole in the flange of the thermostat on the 4.0L I6 and this hole should be at the top, 12 o'clock, position. A factory part was the hole, but aftermarket thermostats never do, so it must be drilled. If this isn't done, air is trapped in the head causing hot spots until the tstat opens.
You can actually fit a 12 point socket on the drain valve on the radiator. Can't remember the size but there is one that fits perfectly. Put the socket on a long handle ratchet and it'll come off without an issue. Those Jeep 4.0 straight 6 are almost bullet proof. But not so much if a bad mechanic works on it. I've seen many exceed 300k+. Maybe the new Hurricane 6 Jeep/Ram is now using will be as great. I believe the 4.0 was originally developed by American Motors ? My sweet wifey tries all the time to give me green tea. No way Ray.
My neighbors GMC truck had an overwhelming problem. He had it in the shop . They did not know why it's overwhelming. I found a plugged up radiator . I replaced it . Fixed .
Well, that's actually underwhelming.
Sometimes I can just cuss at auto correct
Only 113k on a 20 yr old 4.0 liter is very minimal. I had a '99 WJ with 220k miles up until about a year ago when I sold it, still ran like a top. Mind you it had creaks & rattles and the shocks were shot but everything still worked pretty well on it. This one here seems to have suffered a considerable amount of neglect IMO. Funny that it's misfiring so badly but there's no money light on (check engine). My guess is the light is out and it probably has about a million codes stored.
Greetings: Attempted water pump install. Definitely a 'can' job. The afriCans jamaiCans can sure screw stuff up. Thx 4 the share.
CAN ANYBODY HEAR THE LAUGHTER 12:43
just for the sake of argument
How come you don't have bulk gasket material and tools to make them in the shop. There will come a time you can't get a gasket and if you can just cut one out the job would be done or you wait 3 days for one that really no better then the aftermarket replacement.
Buddy says that we need to see something in his Jeep, NOW. We run down to the parking lot to see the clock on the dash change from 10:58, 10:59, 10:60, 11:00.
Quality stuff, the same truck would warp the front rotors on long highway drives. The dealership couldn't find any problems and would throw a set of disks at it, free! Then I did some internet searches and found that this is a common problem with seized calipers that would drag on the disks and overheat them. The dealership was pretty grumpy. If buddy had waited just 3 more months, he would have had to pay for a set of calipers and disks instead of it being under warranty.
It's a Jeep thing.
OK, Ray, did you steal your music playlist from the Pinto I had in high school? I am Gen X, so Led Zep and the Scorpions are to be expected, you younger guys should get your own tunes!
edit: Heard early Metallica a bit later. Is Ray an honorary Gen Xer? He does have the work ethic to be one.
This is one of those moments where either the owner or his friend said, "It's only a thermostat, I can do that easily." MOST times they're right but they also have a chance at screwing it up. This time they lost and you saved their butt, Ray. Well done.
On that engine, bad injectors can cause the backfiring. I'd pull, clean, and test them before digging deeper into the backfiring.
Ray, check the engine ground/dipstick mount stud . . It can be loose/corroded and cause a very difficult to diagnose misfire only under load. Also check that theres not a vacuum leak where the intake/exhaust bolt to the head, because thats a 4.o thing. Also, I'd bet the driver side engine mount is broken. It's a Jeep thing.
Regular brain: mating surface clean. ADHD brain: MAKE IT SHINY
I used to use yellow permatex just to tack in the thermostat just to hold it in position
First thing I would have checked is for water in the oil. Miss fire? Bad wires, or spark plug. How about pressure testing the cooling system? Back fire is caused buy a lean condition. A dirty air filter is causing a rich condition, the 02 censer picks this up and leans tells the computer to lean it out causing the back fire....Ken
2004/131600 miles that thing looks smoked. Previous "mechanic" incompetent. LOL.
Red, blue or black schmooze (in very small amounts) is useful to keep the gasket in place while getting the bolts started.
Soft hose, chewed up belt, change them before they leave you walking.
I feel that battery may have a parasitic draw because it seemed to start fine after the alternator ran for just a little bit.
But I'm just a parts changer, not a mechanic.
Please be a little more safety minded. Got as far as 14 mins in, wire brushing. The grinder was not secure, iv'e never seen your bench grinders bolted to a table. Reason I'm bringing it up is, I'm just after loooosing a finger because of a lapse in concentration at work. Please fix it. Bill
I had a mess of early 2000s GMs with bad catalytic converters that sounded exactly like that minus the misfire, which circles back to why it may be plugged?
Big fan of the 4.0. Had a '98 ZJ with that engine and it took all the abuse I could throw at it. Sold it in a fit of weakness when I saw something I thought I'd like better. Heh. Guess what? :) Still, I'll get another one soon.