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Jeep Cherokee Grand Cherokee Engine and Performance Problems

566 messages,  Last post on Nov 16, 2009 at 9:41 PM

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What is this discussion about? Jeep Grand Cherokee, Jeep Grand Cherokee SRT-8, Jeep Cherokee, Engine, SUV

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#3 of 566 Jeep Sport '00 - engine trouble? by jmousseau44 Sep 13, 2006 (5:31 am)
Hi, I'm new here and looking for some advice on my Jeep Cherokee Sport. I'm not very mechanically inclined so please try and bear with me.   I recently took my jeep in because the engine began vibrating really bad during cold starts (in the morning) and after hot starts (?) after it had been running for over a half an hour, turned off then started again within say 15 minutes. When it would begin to vibrate the jeep would almost appear to be on the verge of stalling but never did. I ended up taking it in to a dealer and after looking at it determined it was the timing belt (mechanic told me it was set ten degrees ahead) and reset it. At first everything seemed fine but after 3 weeks now the vibrating seems to be returning (but no way near as bad as it was before). I'm also noticing that fan seems to be always running (though the heat gauge never goes over half) and what sounds like a pump (water pump maybe?) constantly working. I'm looking for some opinions on what could be going on before I take it back in again. My jeep has about 115,000 miles on it and I've been good about the maintenance. Like I said earlier I'm not really mechanically inclined so I apologize in advance if this seems to not make sense. Any advice is greatly appreciated.   Thanks, -Jason Replies to this message: bostonsteve (Oct 26, 2006 12:56 pm)
#4 of 566 Re: Jeep Sport '00 - engine trouble? [jmousseau44] by bostonsteve Oct 26, 2006 (12:56 pm)
Replying to: jmousseau44 (Sep 13, 2006 5:31 am) Hmmmmm. I was under the impression that the 00 sport had a timing chain (not belt) and didn't need replacing.
#5 of 566 Really? by jmousseau44 Oct 26, 2006 (3:25 pm)
That is strange but that's what the dealer said, "the timing belt was set ahead."   And it is a 2000 Cherokee Sport 4D/4WD 6cyl.   So far it's been running ok but with winter coming I'm a little concerned. I keep up the maintenance on it but you never know.   Jason Replies to this message: mullins87 (Oct 29, 2006 5:21 am)
#6 of 566 Re: Really? [jmousseau44] by mullins87 Oct 29, 2006 (5:21 am)
Replying to: jmousseau44 (Oct 26, 2006 3:25 pm) It DOES infact have a timing chain and NOT a timing belt. It is possible that your timing chain could have jumped time, but usually it will fall behind, not jump ahead. There's an ignition pickup where the distributor used to be - older engines had the distributor while your newer engine just has a small module mounted in that spot. This module IS mounted on a shaft just like the distributor and it could be slowly rotating in its mount if the hold down bolt is somehow working loose.   Checking the timing again would be my next move. If it's off, retime the engine and put some Lock Tite on that bolt.
#9 of 566 Check engine light by daniemu Mar 10, 2007 (5:42 am)
I have a 1995 Jeep Grand Cherokee and yesterday the check engine light came on. I didn't notice any change in how the vehicle was running (the temperature and oil gauges were fine). I stopped at a shop to get it checked out, but wasn't able to get in. When I got back in my car, it didn't come on the rest of the way home. I wasn't sure if I should take it in, or if this was possibly a fluke. Replies to this message: commit (Mar 30, 2007 4:25 pm)
#10 of 566 Re: Check engine light [daniemu] by commit Mar 30, 2007 (4:25 pm)
Replying to: daniemu (Mar 10, 2007 5:42 am) I have an 02 and had the same problem. The engine light would come on for about a week and then go off. If you have an AutoZone near you ask them to run their system on it to give you the exact reason the light is coming on. If it says slow emissions leak, which is what mine said, you can do one of two things. One, check your emissions hoses to make sure they aren't cracked, this is really simple, just open the hood and there are only two hoses. The guys at Autozone can show you where they are just in case you're not sure. The next thing, and this is what fixed mine, was replace your gas cap. Mine had a slow leak around the gasket. Hope all works out okay.

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