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Jeep Grand Cherokee Start Stall Idle Problems

1069 messages,  Last post on May 23, 2013 at 12:11 PM

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What is this discussion about? Jeep Grand Cherokee

Messages Page 102 of 108

#1005 of 1069 Re: 1995 Jeep Grand Cherokee cold start problems [8isenough] by dragon5126

Jun 17, 2012 (7:31 pm)

Replying to: 8isenough (Dec 04, 2011 11:24 am)
where to start... ok the biggest problem listed is the 032 code... yes they ARE intermittent, your EGR valve IS bad, no if and or buts. the service the 4wd switch is a known bug... check your fluid level in your XFER case... bring it up to the bottom of the fill hole and run it for a while, most of the time it will fix the issue... bad software in the VIC... not kidding, been there done that! Now your battery drain, that sounds like a bad.... anything electrical, but mostly check your Alternator and secondly Starter. Not just the relays but the cables and the units themselves ESPECIALLY the alternator these beasts can cause the drain you are seeing due to leaking (yes that is the correct term) diodes. You can pull it and take it into many parts stores to have it checked but often a leaking diode is missed, none the less it is a starting point, if it checks out good, throw a simple battery disconnect switch between the heavy lead and the alternator and turn it off and see if it still kills the battery ( or just disconnect it, if you dont have a switch). If that doesnt do it, then unpluf the low amperage connector on the alternator and repeat. if neither of these eliminates the drain, it isnt the alternator which is the most common cause. doing it in this manner will also tell you which internal parts you can replace, diode pack or regulator. completely disconnecting the alternator will tell you if its the alt, but then you need to diagnose which item is bad. I've run jeeps for decades. 'Rokees in particular, they dont die gracefully, they go out in a blaze of Glory! What you describe sounds like a typical Simple problem, pretending to be something major... and when you find it it will probably be a DUH moment! Like I said earlier, been there done that!

#1006 of 1069 Re: 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything. [swelms] by dragon5126

Jun 17, 2012 (7:44 pm)

Replying to: swelms (Sep 02, 2011 8:58 pm)
Your problem is timing related, either valve or ignition. the giveaway is the backfire. either a valve is not operating properly, or is burned. But the most likely is your ignition. Look to the ECM or whatever the correct name for the computer control unit is... but before you do, Double check your spark plug cables to make sure you arent inducing a cross fire situation...
EDIT:
 
There IS one other thing to Check! YOUR EXHAUST!!! If it has leaks and is literally drawing air in, and too much O2 reaches the downstream O2 sensor (after the catalytic converter), this type of situation can be triggered....

#1007 of 1069 '02 JGC 4.0 by maelectrician

Jun 22, 2012 (8:39 am)

Hey All,
 I have and '02 JGC 4.0. It runs well, have had a myriad of electrical problems, most somewhat easily fixable. Now I am having an issue with it starting. Knock on wood, it has never NOT started, but it sure sounds like it isn't going to pretty often. It honestly sounds like a weak battery or starter to me, but I had my mechanic take a look at the starter and he metered it and said it is drawing exactly what it should for amperage. My alternator is putting out 14.2 volts when running, which is right around where it should be. My battery is a year old, and have had it tested 3 times and all tests come back good.
 
 I am at a loss as to what could be causing her to sound soooo labored when it is turning over. Anyone out there have the same issue, or have any suggestions as to where I should start? Any help would be greatly appreciated...
 
Thanks,
G

#1008 of 1069 98 Jeep Grand Cherokee Laredo issues by annoyedwmyjeep

Jun 28, 2012 (3:10 pm)

I have had my 1998 Jeep Grand Cherokee Laredo ( Strt 6 and 130k miles) for almost 6 months. When I bought it from a small dealership it ran great, had alot of power, very reliable. Then about 6 weeks after i bought it, I was driving to the store, I went to stop at a stop light and it turned off. No big deal I just put it in park and then went on my way. Then it progressivly got worse, shutting off at stop lights, stop in go traffic on the free way. Then it got worse, it got to were I would be driving perfectly fine, cruising 50-65mph no issues and then when applying more gas it would slow down instead of speed up, sometimes I can get it to work through the issue and continue on my way but most times it will slow down until it back fires and then eventually dies. I talked to my friend who is a mechanic he hooked it up to his computer and said the 'ignition coil is bad' so I ordered the stinking coil, we replaced it but alas it didnt work. He ran his computer again and it said the 'ignition coil' then started telling me random sensors were bad. Upon reading other peoples issues and resolutions we decided that perhaps the PCM was bad so we replaced it. My friend did a tune up and noticed that the distributor cap, the spark plugs/ and wires had all been replaced. New PCM said O2 sensors were bad so we replaced them. So new PCM and sensors my Jeep was running great full power restored, not dying, alittle broke from the parts I replaced but other wise happy. Then about two months later its back to the way it was before I replaced the computer. what I need to know is what else could be causing my jeep to act up? Or is there a recall that I am not aware of. I am a single mother who doesnt have a whole lot of money to continue sinking it into a car to make it safe for me and my son. Any advice would be greatly appreciated!

#1009 of 1069 98 jeep grand cherokee 5.9 by gc59

Jul 07, 2012 (9:37 pm)

I have a 98 GC and at some times when i'm at a light stopped it will idle real low then shut off. Also when im accelarating it will lose power andslow down. I would have to pump the accelarator to bring back to normal. I just put in a new alternator. Any ideas?

#1010 of 1069 Re: 98 jeep grand cherokee 5.9 [gc59] by kramer842

Jul 08, 2012 (8:54 am)

Replying to: gc59 (Jul 07, 2012 9:37 pm)
This sounds similar to the problem I had a year ago. What are the engine codes? If they're P0505-which I had, then it could be one of several problems. Initially that's the idle air control and or idle control valve. But it turned out with my 99 GC 4.8L, it was the PCM. Did a ton of research with two different local jeep mechanics, 2 jeep forums and a jeep guru mechanic. Here's how I got my jeep back on the road and running great. http://townhall-talk.edmunds.com/direct/view/.f0f8b2b/971!keywords=#MSG971
 
Best of luck!

#1011 of 1069 Re: 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything. [swelms] by ellies_rocket

Jul 15, 2012 (9:23 pm)

Replying to: swelms (Sep 02, 2011 8:58 pm)
I have the exact same problem as Swelms. I own a 1998 Jeep Grand Cherokee Laredo and if I have been driving for a long time, the power just dies. The speedometer goes down and the rpm drops from 3000 to 1000. If I give more gas, than the car brakes.
I usually let go of the gaspedal for a few seconds and then I can drive again, but this only resolves the problem for a little bit and eventually I need to give my car a rest for about 20 to 30 minutes and then it is fine again.
 
I asked a few mechanics and even in a Jeep garage, nobody had ever heard of this problem. So I really hope somebody can give me an idea what the problem is and how to fix it?
 
Thank you soooo much!!!

#1012 of 1069 grand cherokee wont start by ralka

Jul 21, 2012 (11:55 am)

I have an 02 grand cherokee (v8) when driving home i thought i felt a misfire but got home without a continuing problem. when i went to start it the next day it cranked but wouldn't start. the codes that i found ( 7 of them) were po455 ,po171. po174,po442.po158,po161, and po0300 i can relate there discriptions if needed but they are basically evap leak large , o2 sensor 2 on bank 2 heater and high voltage, random misfire and bank 1 and 2 lean. the light of course had come on but it ran great until i felt the misfire. any help on where to start would be greatly appreciated

#1013 of 1069 Re: 1995 Jeep Grand Cherokee Laredo. Please Help. Tried everything. [ellies_rocket] by danny80

Jul 23, 2012 (4:28 am)

Replying to: ellies_rocket (Jul 15, 2012 9:23 pm)
Hi,
I would recommend to check up the heated wire sensor in the air intake. The wire sensor is very often dirty by the air deposits - grease dust etc. It makes a signal distortion and possible control problems.
The cleaning is very simple, only be careful not to damage the wire.

#1014 of 1069 Re: grand cherokee wont start [ralka] by danny80

Jul 23, 2012 (4:45 am)

Replying to: ralka (Jul 21, 2012 11:55 am)
Hi,
by my experience it runs as follows:
- the bank 2 O2 upstream sensor is bad - trouble codes P0158 - P0174. It costs a few bucks only
- the unevitable misfires follow - P0300
- after that goes too much unburned fuel to the charcoal cannister, that cannot to process it - code P0442.
Have the upstream O2 sensor checked and replaced, then deleted the DTCs.
I hope it helps

Messages Page 102 of 108

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