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Jeep Cherokee Grand Cherokee Engine and Performance Problems

729 messages,  Last post on Mar 20, 2013 at 10:59 AM

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

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

Messages Page 67 of 74

#654 of 729 Lost by tumbasm

Jun 21, 2011 (9:58 pm)

I have a 1996 Jeep Grand Cherokee. There are two problems I am having. My first problem is the car pulls to the right (really strongly) when you hit speeds above 60 mph, I have bought 4 new tires, had an alignment, and replaced the axles, and oiled everything up I am still having the problem. My second problem is when I am stopped at a stop light, and while my foot is on the brake, the car moves forward like it is going to take off even when it is stopped. Can any one help?

#655 of 729 Coil went out now horrible Gas milage? by erikalaine

Jun 22, 2011 (6:02 pm)

Okay so i have a 1993 jeep grand cherokee ltd with a 4.0 straight six my jeep was running rough it has a exhaust leak somewhere but it has had that a long time and never had this bad of gas mileage... So my car started then wouldn't start again after i shut it off so i changed the coil and it ran again and it is running strong but doesn't sound pretty and is getting extremely bad gas mileage my jeep is getting about 35 miles to the quarter tank some days even less i dont know what to do please give me some hints i looked and all the coil wires are hooked up and everything tightly but i dont know what the next step i need help and i can not get the exhaust fixed right now i am broke
Thanks for looking -Erika

#656 of 729 Evaporative System Issues by 02jeepgc28

Jun 29, 2011 (6:46 am)

Hi,
 
Since December 2010, my check engine light has come on five times. I've included below what was done each time at the mechanic.
 
73,797 - P0456 Error Code - Evaporative emission control system leak detected (very small leak) - 11/26/10 - Possible loose gas cap, mechanic tightened and tested cap and reset the OBD.
 
74,102 - P0442 Error Code - Evaporative emission control system leak detected (medium leak) - 12/7/10 - Gas cap tested bad, mechanic replaced the gas cap and reset the OBD.
 
77,718 - P0455 Error Code - Evaporative emission control system leak detected (large leak) - 5/31/11 - Possible loose gas cap, mechanic tightened cap and reset the OBD.
 
77,865 - P0455 Error Code - Evaporative emission control system leak detected (large leak) - 6/10/11 - Mechanic replaced the evaporative vent solenoid (solenoid was clicking loudly on the 11/26/10 date) and the crankcase vent hose (hose was cracked); reset the OBD.
 
78,161 - P0455 Error Code - Evaporative emission control system leak detected (large leak) - 6/21/11 - Mechanic suggested going to the dealer because they have an advanced computer system.
 
My questions:
 
I've researched this on Google and it appears that many have had this issue on different Chrysler vehicles, many with no resolution. My mechanic said he could do a smoke test (pump smoke through the evaporative system) to see if that shows anything, but he said that this can be expensive to track down the problem. The dealer wants $95 just to run diagnostics (which would apply to my estimate to get it fixed, assuming they figure out the problem).
 
Have you heard of this? If so, what have people tried?
Any other suggestions?
 
The mechanic said I could drive with the light on, but this makes me uneasy, especially if I go out of town. I have noticed a decline in gas mileage. Other than that, it may run slightly rough here and there, but overall doesn't seem phased by this issue. I haven't spent a ridiculous amount of money so far, but I'm trying to keep the costs down on this.
 
Thanks!!

#657 of 729 Re: Evaporative System Issues [02jeepgc28] by 02jeepgc28

Jun 29, 2011 (8:38 am)

Replying to: 02jeepgc28 (Jun 29, 2011 6:46 am)
It is a 2002 Jeep GC with almost 79,000 miles. It is the 4.0 I-6 and is two wheel drive.

#658 of 729 '99 Jeep cuts off by sheenanc

Jul 01, 2011 (4:44 am)

My '99 Jeep just cuts off while going down the road. I have replaced the fuel pump twice, but nothing has changed. It happens intermittently. Sometimes it starts right up and then it sets for hours without cranking. I went for a 6 hour trip with no problems, but then a 5 mile trip it may happen twice.

#659 of 729 Re: '99 Jeep cuts off [sheenanc] by 02jeepgc28

Jul 01, 2011 (6:32 am)

Replying to: sheenanc (Jul 01, 2011 4:44 am)
That's odd. I haven't had any issues (that I know of) with my fuel pump yet, but I did notice that my exhaust smells rich, which I think is tied to the engine error code. Seems like a lot of people have had fuel/evaporative/emissions related issues. Thanks.

#660 of 729 1999 Jeep Grand Cherokee Limited 4x4 Please help!!!! by jeepmomof4boys

Jul 11, 2011 (12:23 am)

Ok 1st off let me start by saying I am not mechanically inclined at all. I am a single mother of 4 small boys and not alot of money to take to shop. These are my issues,
ABS light is on all the time.
When you start the car it revs up so loud and high
 When u first start driving it is sluggish.
When driving it seems to have a hard time shifting gears,
it is automatic, i let off gas and it kicks in.
When I put it from park to drive it clunks.
When I make a turn to like park it clunks.
And last but not least there is a constant sound coming from like down by brake pedal and accelerator like a constant hiss or air flow. Please help!!!

#661 of 729 Re: Lost [tumbasm] by none43

Jul 12, 2011 (4:49 pm)

Replying to: tumbasm (Jun 21, 2011 9:58 pm)
I have the very exact same problem you find a solution yet?

#662 of 729 Re: 1995 Grand Cherokee Orvis edition [cjs811] by badjeep95

Jul 23, 2011 (5:07 pm)

Replying to: cjs811 (Jul 21, 2010 4:17 pm)
yes i am having the same problem....when i come off a stop sign goin about 20-25 mph it starts jerking if you find the problem please let me know...its very irritating.

#663 of 729 Re: '99 Jeep cuts off [02jeepgc28] by cjplayer

Jul 24, 2011 (4:16 pm)

Replying to: 02jeepgc28 (Jul 01, 2011 6:32 am)
My guess why your Jeep shuts off is either the cam shaft positioning sensor or the crank shaft positioning sensor, that is if Jeep has either of the two. If your Jeep has a way to display the trouble codes I'd try to find out how to get it to display those codes in order to see if it can identify this as the problem.

Messages Page 67 of 74

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