'98 Cherokee Loss of Power and Stalling - JeepForum.com
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Unread 11-20-2013, 10:30 PM   #1
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1998 XJ Cherokee 
Join Date: Nov 2013
Location: Colorado Springs, Colorado
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'98 Cherokee Loss of Power and Stalling

Ok I'll try to be as detailed as possible.

I have a 98 cherokee that I just replaced the thermostat and housing gasket on yesterday.
She ran fine all day yesterday and today up until I was driving home and I noticed there seemed to be a lack of power and response when I hit the gas. Later in the day I went to run some errands and when I hit the gas there was no response and she began to stall out every time I tried the gas. Eventually she just died all together and has troubles restarting.

It should also be noted that I need to replace my A/C Compressor which makes her squeal at me when I first start her.

What are some possible problems/solutions?

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Unread 11-20-2013, 10:53 PM   #2
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1998 XJ Cherokee 
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Most likely problem so far in my research is there is a leak somewhere thats causing to much air to come in. Any common connectors or hoses that like to crack or pop off?

Last edited by koko2635; 11-21-2013 at 02:23 AM..
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Unread 11-21-2013, 12:24 PM   #3
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2000 XJ Cherokee 
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Start with the basics, does it have spark at the spark plugs, and are the fuel injectors firing ? Next, test the battery and the alternator. Inspect the battery wires, clean the ends, and bolt them back in place firmly. The Jeep will not run correctly without a steady supply of 12 volts to the computer. If you still have the problem, test the Throttle Position Sensor.

Tighten the fan belt, it should stop squealing.

Too much air coming in isn't is not a actual problem, unless you are talking about intake manifold leakage causing the engine to redline the tachometer.

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Unread 11-21-2013, 10:53 PM   #4
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You should also check fuel pressure.

Also, I it's doubtful your AC compressor is faulty just because the belt squeals when its started. Most likely needs a decent quality belt (like Goodyear) on it at the proper tension. Most people who replace the belts on the 4.0 fail to realize how tight they actually need to be.

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Unread 11-26-2013, 09:27 PM   #5
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hey Koko ... ditto all of the other suggestions .. however, you mentioned the squealing and since you replaced the thermo, my best personal experience suggestion would be that your water pump is shot or about to go ... it would be a good idea to check it out while you are at it or replace it altogether if you don't know its history - water pump impeller shards would be costly if they ended up inside your engine cooling parts! .. good luck!
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power , stalling , thermostat , throttle , xj

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