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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 73

#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.

#664 of 729 Re: Coil went out now horrible Gas milage? [erikalaine] by cjplayer

Jul 24, 2011 (4:40 pm)

Replying to: erikalaine (Jun 22, 2011 6:02 pm)
It sounds like you may have an oxygen sensor gone bad. I would try to find the trouble codes to see if they identify the oxygen / or o2 sensor/s as the problem. The oxygen / o2 sensor/s has allot to do with your fuel economy as it tells your Jeeps computer how much fuel to deliver to the injectors. Some of your local discount auto parts stores may check your codes for free, and as for the exhaust smell, I'd run it by a local muffler shop to get my catalytic converter checked to see If It's clogged, this should also be a free service. I just hope It's not an exhaust manifold gasket. By the way your oxygen sensor/s are located on your exhaust manifold / and tailpipe system.

#665 of 729 Re: Lost [tumbasm] by cjplayer

Jul 24, 2011 (4:55 pm)

Replying to: tumbasm (Jun 21, 2011 9:58 pm)
I would start with your TPS or throttle positioning sensor located next to your throttle body.
Then your camshaft positioning sensor, and next your crankcase positioning sensor. I'd do one every pay day to see It the problem gets rectified. If not the problem,,,then time to have it diagnosed or pull the codes yourself.

#666 of 729 Re: Coil went out now horrible Gas milage? [cjplayer] by cski

Aug 15, 2011 (10:05 am)

Replying to: cjplayer (Jul 24, 2011 4:40 pm)
Yeah, I just got mine out of the shop yesterday(99 Laredo 4.7 4x4 135k).
 
Mine was trying to stall when stopping at lights for example. The key here with the four O2 sensors is if the rough idle symptoms I was describing happen while in neutral. If the WJ runs rough with or w.o the tranny engaged it is most likely an O2 sensor issue, or the IAC motor pintle, or the cam position sensor. It all hinges on the error codes like u said. Just thought I would throw this in since it is fresh in my mind.
The loud roaring noise is the coolant system fan clutch engaging on startup. It needs to be replaced, but if you rev it in neutral it will shut off. FYI.

#667 of 729 Re: 1999 Jeep Grand Cherokee Limited 4x4 Please help!!!! [jeepmomof4boys] by cski

Aug 15, 2011 (10:17 am)

Replying to: jeepmomof4boys (Jul 11, 2011 12:23 am)
Hi!
 
We all feel for you here. Everyone here is very nice and helpful. We need more info!
How many miles does it have?
What has been done to it maintenance/repair wise?
Which engine? 4.7 V8 or the I6?
 
The WJ model Grand Cherokee has a litany of recalls, electrical problems, computer problems, transmission and transfer case problems, etc.
 
So...
1) make sure there is oil, coolant, and TRANS FLUID in it. Have your service station check them for you first thing.
2) See if a local shop has a special where they will diagnose your check engine light for free (with the hopes of you allowing them to fix it).
3) Write down all the issues you are having so you don't forget anything
4) Be prepared to spend $2,000 to $5000 in repairs. I am not kidding unfortunately.
 
Anything we advise you on here is supposition and educated guesswork due to the sheer amount of issues you are having.
 
Last, if you can afford to have it repaired, it is a great driving, great looking, versatile vehicle. However, it is a truck and has expensive, heavy-duty parts that cost a ton of money, so if you have 4 kids and a limited income, get rid of it and buy a front wheel drive, highly rated, reliable car that has less things to break!!! Sorry!!!! :+(

#668 of 729 1987 Jeep Cherokee brakes by feelingood777

Aug 17, 2011 (9:39 am)

I recently changed the pads and calipers on my Cherokee. I have bled the brakes, and I did not bench bleed calipers but I did check them to makes sure they were full of fluid then bled system again. Now I can't get enough pressure to stop the car quickly. I can pump them up a little when the engine is off but when it is on they have almost no pressure. They do slow the car down to a stop but not very quickly. What might cause this. I am new to the Jeep thing and I am stumped. Thanks for any info.

#669 of 729 Re: 1987 Jeep Cherokee brakes [feelingood777] by cski

Aug 17, 2011 (10:56 am)

Replying to: feelingood777 (Aug 17, 2011 9:39 am)
Check to make sure there isn't gunk blocking the line coming out of the master cyl. When you bled the brakes, any sediment in the system goes to the bottom and may be partially blocking one of the lines.
 
Other than that, reduced pressure = leak! :=(

Messages Page 67 of 73

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