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Jeep Grand Cherokee Maintenance and Repair

5134 messages,  Last post on May 20, 2013 at 1:06 PM

You are in the Jeep Cherokee and Jeep Grand Cherokee Forum.

What is this discussion about? Jeep Grand Cherokee, Jeep Cherokee, SUV

    

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Messages Page 362 of 515

#3602 of 5134 1995 Jeep Grand Cherokee Problem by chicagogal1

Feb 05, 2007 (10:34 am)

I don’t know if it’s the weather or if my car is about to die but it sounds like it’s on its last legs. I think it’s the shift from 3rd to 4th that is going goofy because when I get to about 40mph and press the gas pedal, the rpms will go up to 5k if I’m not watching. When I back off the gas and slow the rpms, eventually it will catch and I can then speed up. This happens after a cold night usually even if I give it 15 minutes to warm up in the morning. Also, when I’m idling at a stoplight I need to put the car in neutral in order to avoid a stall. Kind of weird but this has been happening more and more frequently.

#3603 of 5134 Re: 05 JGC Limited Ticking [howie56] by rollj

Feb 05, 2007 (3:12 pm)

Replying to: howie56 (Feb 04, 2007 1:49 pm)
I haven't heard of any air pump on these vehicles. I'm actually not sure what you mean by air pump, the only air pump that i've heard of is for emissions and those where only used in the late 80's and early 90's. The only explination i have been given is it's from the catalytic converters. I have actually heard the tick on several of the hemi JGC and im curious how DC can issue TSB's on very stupid complaints and not have addressed this issue. If you could can you let me know what air pump you are refering to.
Thanks.
P.S. a very good source of TSB's and all other information on all JGC is http://www.wkjeeps.com/.

#3604 of 5134 Questions with Switching Gears and over reving at constant speed by sixstar08

Feb 06, 2007 (9:11 am)

I've got a 2001 Jeep Cherokee 4x4 Sport with and Auto Trans. It's just when over 70K miles. I've just recently noticed that when driving at 50 or better it seems to jump between gears. When going 50mph it will jump from about 1500rpm to about 2100rpm. There is no change in modulation to the gas pedal and this is done on a flat road so there is no change in hill accent/decent. I first noticed the problem when the car was going between 60-70mph. The RPM's will jump up for a little bit then jump back down. It will continue to do this for a while. I'm not sure how long this would go on as my typical drives are not great in distance. It has been getting significantly colder and I am wondering if that could be part of the problem, but I fear that this isn't it. My inclination is that it might be: a sensor, something with the transmission, or throttle body (just putting it out there). Has anyone had a similar problem or knowledge of potential solutions to this problem?

#3605 of 5134 Re: Questions with Switching Gears and over reving at constant speed [sixst by 70ss454_man

Feb 09, 2007 (11:48 pm)

Replying to: sixstar08 (Feb 06, 2007 9:11 am)
does the car seem to buck a little when it does this, slow down?

#3606 of 5134 Re: Questions with Switching Gears and over reving at constant speed [sixst [70ss454_man] by kforce

Feb 10, 2007 (10:44 am)

Replying to: 70ss454_man (Feb 09, 2007 11:48 pm)
Does your Jeep have an "overdrive" button? If so It sounds as if your Jeep is going in & out of overdrive. Try manually taking the trans in & out of overdrive to see if it duplicates the issue.

#3607 of 5134 Re: Questions with Switching Gears and over reving at constant speed [kforce] by chicagogal1

Feb 12, 2007 (11:19 am)

Replying to: kforce (Feb 10, 2007 10:44 am)
Yes it does. I'll try it.

#3608 of 5134 1999 JGC 4.7L V8 no oil pressure by patdower

Feb 14, 2007 (12:04 pm)

when i start my Jeep the oil pressure is a little lower than normal, as it warms the pressure drops, eventually to zero and the check guages light comes on. When I accelerate the check guages light shuts off and the pressure rises slightly, only a little bit! I have plenty of oil, and I had it changed 3000 miles ago. What is my Jeeps problem?

#3609 of 5134 Re: 1999 JGC 4.7L V8 no oil pressure [patdower] by xscout

Feb 14, 2007 (1:43 pm)

Replying to: patdower (Feb 14, 2007 12:04 pm)
Assuming the engine continues to sound normal, I would try replacing the oil pressure sensor first. This is a fairly simple, inexpensive job. The check gauges light is just responding to the reading of the oil gauge.

#3610 of 5134 Re: 1999 JGC 4.7L V8 no oil pressure [xscout] by patdower

Feb 14, 2007 (2:00 pm)

Replying to: xscout (Feb 14, 2007 1:43 pm)
would the oil pressure sensor also be reffered to the oil pressure switch?

#3611 of 5134 Re: 1999 JGC 4.7L V8 no oil pressure [patdower] by tuggajb

Feb 14, 2007 (3:58 pm)

Replying to: patdower (Feb 14, 2007 2:00 pm)
your right sits above oil filter

Messages Page 362 of 515

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