99 Grand Cherokee Stalling Problem - JeepForum.com

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post #1 of 17 Old 02-16-2008, 10:49 AM Thread Starter
pigoo
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99 Grand Cherokee Stalling Problem

First let me apologize if this question gets asked a lot! I'm a member of other forums, and I know how irritating it can be to see the same posts over & over again!!!

But believe me, when the problem happens to you...it really sucks!

In any case, I tried to do all of the right things ahead of time:

- I searched the FAQ (it did not list any fixes for the stalling)
- I did a "JeepForum.com" search for "Grand Cherokee Stall", and got about 386 hits...but most of them didn't really apply (wrong vehicle, wrong year, different symptoms).


So here is my deal...I have a 1999 Jeep Grand Cherokee Limited (4WD)...with about 77,000 miles.

Symptoms:

- vehicle usually stalls within 15 minutes of driving (instant stall, no warning, no rough running)
- I get no warning lights on the dash after a stall
- if I let it sit for maybe 5-10 minutes, I can get it to restart, and then I make a "dash" for home, and hopefully I make it!!!

What I have done so far:

- I get no warning lights on the dash, but I ran an OBD-2 scanner check anyway, and get no codes.
- checked air filter...good
- checked for any loose or dirty electrical connections under the hood...found nothing
- checked electrical connection on coil pack...good
- checked throttle body...didn't look very dirty, so I didn't clean with spray.
- removed coil pack, and replaced spark plugs

That's it so far.

Next steps:

- thought about checking fuel pressure at the rail, but I don't have the gauge, and didn't want to spend $50 bucks unnecessarily.
- coil pack seems to be ok, so I don't think replacing it will help
- I have heard about cleaning the IAC & TPS...but nothing looked dirty in the throttle body.

But mainly...I wanted to check with all of the experts here on JeepForum.com first...before throwing a bunch of money at it for parts that may not be the problem.

So please, send your ideas my way!

Thanks,

- Nick

p.s. Sorry for the long post, wanted to provide as much detail as possible.

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post #2 of 17 Old 02-17-2008, 08:22 AM Thread Starter
pigoo
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I can't believe no one has any ideas!
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post #3 of 17 Old 02-17-2008, 11:15 AM
dickensheets
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Fuel pump???

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post #4 of 17 Old 02-18-2008, 09:54 AM Thread Starter
pigoo
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Quote:
Originally Posted by dickensheets View Post
Fuel pump???
Yes...I already listed that as a possible source for the stalling in my original post (which will require the purchase of a $50 fuel pressure gauge).

I was hoping to get more replies...to help narrow things down a bit, from the many possible sources for this problem.

Thanks for your reply,

- Nick
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post #5 of 17 Old 02-18-2008, 12:32 PM
kmd1776
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what engine do you have?? im assuming being a limited your running the 4.7L, which i really dont know anything about... but maybe spending 50 bucks on a fuel pressure gauge is a fairly cheap way to rule out any fuel problems....

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post #6 of 17 Old 01-16-2012, 05:13 PM
AAA
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If your Jeep is having stalling issues, it is up to you to make the NHTSA (National Highway Traffic Safety Administration) issue a recall for the year and VIN numbers for the vehicles with this problem. They issued a recall for certain 1996 Jeeps with this exact same stalling issue. Please either call them or visit the website and enter your info and stalling symptoms. Let's make Jeep fix what they need to.
Either call the NHTSA at 888-327-4236 from 8am-8pm M-F Eastern time, or go to www.NHTSA.gov and click on the right side where it says, "Report a vehicle or child seat defect".
You can also click on this link which takes you directly to the page to file a safety complaint. https://www-odi.nhtsa.dot.gov/ivoq/index.cfm

It does no good to complain unless we let them know about it. Enter a formal complaint about what your vehicle is doing and make them pay for the repairs.
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post #7 of 17 Old 01-16-2012, 05:16 PM
zjj
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Idle air control motor? My 96 had same problems. That fixed it. What about a dead cell it two in your battery? Sounds far fetched but it also caused stalling in another jeep I had. Simple voltage test.
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post #8 of 17 Old 01-16-2012, 06:04 PM
badbird17x
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It sounds like something getting warm, them cooling off. Since you said coil ill presume 4.0 as 4.7 has 8 of them. Does your code reader have a live data feature? Will it die in 15 mins if it just sits idling? If so watch what it's doing as it dies.

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post #9 of 17 Old 01-16-2012, 10:35 PM
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Pssst.. it's 2012 guys..
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post #10 of 17 Old 03-12-2013, 06:39 PM
rickaclaus
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I'm having same issue '00 wj, i6. I replaced coil rail today, no luck. cranks over slowly. tomorrow will try crank sensor.
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post #11 of 17 Old 05-26-2013, 08:35 PM
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Apparently I'm not alone.
Jeep started shaking intermittently, start up, stop lights, etc. Progressed to would not turn over 1st try , 2nd turn of key no problem. progressed to shaking, when gas depressed no power, very rough idle, sputtering etc. let it go in just idle for a few min and it would seem to catch and drive halfway decent , although still shake at lights, and not a lot of power. Shop said bad Fuel pump. Changed fuel pump, no change, was told bad O2 sensor, new sensor no change. check engine light is on but no codes retrieved. When this first began, Spark plugs looked like crap, replaced them all and it worked perfectly. for one day. sometimes when driving there is a loud "popping" noise coming from what sounds like the glove compartment area, like air popping. Also replaced the coil as well. Today I was hoping that maybe something I replaced was responsible for the plugs to go bad so fast so I replaced those, still a little hesitation when starting, but no stalling or shaking. Im guessing if that doesnt work for long, ill try crankshaft sensor than as a last resort PCM.
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post #12 of 17 Old 05-26-2013, 08:50 PM
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http://www.jeepforum.com/forum/f13/i...l-fix-1487443/

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post #13 of 17 Old 05-26-2013, 09:07 PM
iser
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so why is a thread from 2008 being necro-ed in zj forum?

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post #14 of 17 Old 09-23-2013, 10:14 PM
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jeep problem

I know this post is old, but people still read it.. so I'll just add my experience.... 99 4.0 auto 4x4....
I was having the same type of problems.. getting codes for Cam sensor and coil pack.. engine would randomly stutter and die... sometimes trouble starting, stuttering hard and simply not running..

I read alot, seen how everyone was changing many things with no results.. I wanted to avoid this, but I too got sucked into spending some money before I figured it out for CERTAIN..

new coil pack, new cam sensor, new "crank sensor", took the computer apart to attempt to re-sodder the board(read it somewhere, wrong year)...

each time it seemed to fix it for a couple of days, then act up again... and just before I decided to burn it to the ground........

FIX:
I crawled under the jeep and tapped on the newly installed "CRANK SHAFT POSITION SENSOR" with a long extension and it fired right up!!
turns out the crank sensor (which is nearly impossible to get to) is very sensitive as to how DEEP it is installed... if it is pushed in TOO CLOSE to the flywheel, it will cause it not to function correctly.. so you have to pull it out maybe 1/8 in as you tighten the mounting bolt.. I have not had any problems since, not even a misfire..... there is no code for CSPS, it usually will trip the cam shaft sensor code instead... so all of you out there pulling your hair out, focus on the CRANK SHAFT POSITION SENSOR'S INSTALLATION... 90% chance it will fix your problems
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post #15 of 17 Old 09-23-2013, 10:16 PM
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Quote:
Originally Posted by tensbar View Post
Apparently I'm not alone.
Jeep started shaking intermittently, start up, stop lights, etc. Progressed to would not turn over 1st try , 2nd turn of key no problem. progressed to shaking, when gas depressed no power, very rough idle, sputtering etc. let it go in just idle for a few min and it would seem to catch and drive halfway decent , although still shake at lights, and not a lot of power. Shop said bad Fuel pump. Changed fuel pump, no change, was told bad O2 sensor, new sensor no change. check engine light is on but no codes retrieved. When this first began, Spark plugs looked like crap, replaced them all and it worked perfectly. for one day. sometimes when driving there is a loud "popping" noise coming from what sounds like the glove compartment area, like air popping. Also replaced the coil as well. Today I was hoping that maybe something I replaced was responsible for the plugs to go bad so fast so I replaced those, still a little hesitation when starting, but no stalling or shaking. Im guessing if that doesnt work for long, ill try crankshaft sensor than as a last resort PCM.



FIX:
I crawled under the jeep and tapped on the newly installed "CRANK SHAFT POSITION SENSOR" with a long extension and it fired right up!!
turns out the crank sensor (which is nearly impossible to get to) is very sensitive as to how DEEP it is installed... if it is pushed in TOO CLOSE to the flywheel, it will cause it not to function correctly.. so you have to pull it out maybe 1/8 in as you tighten the mounting bolt.. I have not had any problems since, not even a misfire..... there is no code for CSPS, it usually will trip the cam shaft sensor code instead... so all of you out there pulling your hair out, focus on the CRANK SHAFT POSITION SENSOR'S INSTALLATION... 90% chance it will fix your problems
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