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!!!
Check out our Website/Merch HERE: https://www.RainmanRaysRepairs.com Look for links to our other channels, appointment and contact info, and our new merch lineup with custom T's fitted hats and MORE!
Wife Unit unveils our custom tumblers and mugs https://youtu.be/5Q2DWBes258 also found at https://www.RainmanRaysRepairs.com
Support the Channel with a Like and Subscribe!
Become a Channel Member or visit Patreon at https://www.patreon.com/RainmanRaysRepairs
Visit our Second Channel on YouTube, RainmanRay Off Duty https://www.youtube.com/c/RainmanRayOutoftheShop
Follow on Twitter (X): @RainmanRay4Real
TikTok: www.tiktok.com/ @rainman_rays_repairs
Located in Florida? Need work done?? Visit www.RainmanRaysRepairs.com
Check out my Merchandise shop for Men's and Women's Apparel, MUGS and Stickers at http://www.RainmanRaysRepairs.com
Astro Tools 78450 HD Harmonic Crank Pulley Puller - GM LS, Ford Coyote, GMC, Chrysler, Dodge & Jeep, Black https://amzn.to/3STBrX9
As an Amazon Associate I earn from qualifying purchases.
Also, I personally use or have used the products featured in my links and only recommended them if I feel they are of good quality.
#mechanic #repair #autorepair #restoration #wifeunit #brakecleanmafia
”Intro Music by Karl Casey @ White Bat Audio”
Thanks to Jesse for making the intro and graphic for us to enjoy!!!
2004/131600 miles that thing looks smoked. Previous "mechanic" incompetent. LOL.
Is the starter button an aftermarket thing?
Isn't this the same Jeep that triggered so many on a previous video?
What's wrong with red RTV ?
Jeep aka piece of garbage 😮
4.0 baby!
I love those 4.0 engines. Strong, reliable, easy to work on, all steel long block, timing chain (not belt)
As you implied – the bolt situation was fasten-ating 😄
This Jeep should be in much better condition than it is at 131k miles. I have a 1999 Cherokee with over 300k and its in very good condition.
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.
He will be a repeat customer when that idler pulley self deletes
customer installed problems???
That gauge cluster does NOT match that vehicle ..that’s 99-00 gauges… that jeep has way more than 130k miles lol
That must have been a bud light nite; dude put it in the wrong hole. 😂
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?
I bet the owner watched a YouTube video 🤦♂️😂
My guess is they probably reused the old gasket
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!"
Put on the floor big carton it take most of the dirt oil and moor dirty stuf instead the floor
Reminds me of my '85 Cherokee abortion. Hydraulic clutch multiple problems but the crowning achievement of the dealer was replacing the water pump leaker with a reman that had the impeller
on backwards. Overheated about 2 miles down the road, drove back to the dealer who took 5 days to figure out the problem. No further charge and got a free car wash out of it.
May have warped the head from the overheating.
best background music in the world! It's a Jeep Thing!
I’m thinking clogged cat causing the misfire
that is a dumb move to put the screw in wrong hole.
I think there is a very good chance, knowing how people are these days, that when he tells the owner about the big misfire/backfire that was obviously there before Ray worked on it, the guy will say, " what did you do to my car, it was running perfect when I brought it in, it only had a coolant leak."
after working on cooling system change front bearings .. its a jeep
Ray – the green tea should have been poured into the radiator – it wll block anything up – problem solved!
Fun fact. A little bit of chamfer put on the bolt holes of the machined surface side of the thermostat housing gives room for an O ring which will hold the bolts in place for reassembly.
With all of that backfiring or misfiring or whatever it is, I’m a little surprised you didn’t get a check engine light. That thing is running like crap.
Scorpians rock
I squeeze the hose then pop the tee In the spill free, so when you tank the funnel off u don't leak
They way that bolt was fitted just proves some people should never be allowed to even pick up a spanner
I bet head gasket blew they got it hot And burning water See if steaming out exhaust
A spray adhesive for that vertical gasket helps here 😊
Use HDX. Glad to see it performs well compared to others. They are getting old too, but no noticeable degradation sitting in a cupboard.
Nasty clown the alt does not like water