4 Wheel Drive/SUVs/thermostat

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Expert: - 11/24/2004


Question
Hi Carl

I hope you can answer this. I have 93 Jeep Grand Cherokee, with a 4litre engine. I simply want to learn how to change the thermostat since it seems to go quite often. I have been trying to remove the housing but the belt seems to block the lower bolt I have to remove. Do I have to remove the belt? If so how do I do that? Or do I simply need a different tool.

Thanks

Dwayne

Answer
Dwayne,

I have a 2000 Grand Cherokee, and just changed the thermostat in it, and had no problem with anything in the way.  Yours may have a different belt configuration than mine.  If you do have to remove the belt, this is not real difficult.  What I would suggest, is that you purchase a repair manual for the Jeep, as it will give you specific instructions for removing, replacing, and adjusting the belt.

You can purchase a manufacturer's shop manual for it from a dealer.  They are quite expensive, normally costing, around $100.  A Chilton's or a Hayne's manual would be a better buy, as they can be purchased at most auto parts stores for $20.  They have a lot of information on basic trouble shooting, and repairs, including a list of special tools that may be needed for a specific job, nut sizes along with torque settings.  These manuals are designed for a year or range of years for specific vehicles, and are invaluable if you are planning on doing any repairs, or maintenance yourself.

Carl

4 Wheel Drive/SUVs

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Carl Brandt

Expertise

Will discuss suspensions, lifts, lockers along with tire suggestions. Trail ratings and possible requirements needed for specific type of trails. Safety equipment and what you should carry with you. Certified off-road instructor. I am not a mechanic, and 4-Wheeling is a hobby, so if I can't answer a technical question it is due to my mechanical knowledge being related to vehicles that I have owned, or have worked on. I do not have manuals on all vehicles.

Experience

40 plus years of 4 wheeling in a variety of vehicles. At the present time, my major off-road rig is a 94 Jeep Wrangler with a spring over and a 1 1/2" suspension lift. This gives me a total lift of 7" or so. I have lockers front and rear. I have removed the track bars, and sway bar for maximum articulation. I am running a stock 2.5 ltr 4 cylinder with a Jacobs ignition along with a cold air high flow filter. It has 4.56:1 gears with a Dodge NV4500 transmission along with a 3.8:1 Atlas II transfer case. This gives me a final ratio of 105:1 in low gear/low range. Other vehicles I own, are a 96 Ford F-250 with a 6" lift, posi rear end, 36" Hummer tires, 5 speed with a fuel injected 460 ci engine, an 87 Samurai with an 8" lift, Ford 9" rear end with a spool, Chevy Dana 44 front end with an electric locker, 5.88 gears, 16% reduction in high range and a 6.5:1 low range with 35" Baja Claws, and a stock 2003 Grand Cherokee Overland. Trails I have run are the Rubicon (10 times), Dusey Ershim, Fordyce Creek trail, McGrew trail, several trails in Moab, Utah along with local monthly runs.

Organizations
Lost Coast 4x4's Cal 4-Wheel Corva UFWDA Blue Ribbon Coalition

Education/Credentials
Certified off-road instructor - Certificates in engineering/electronics

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