1998 Jeep Grand Cherokee-Stalling pro...
kickerthefordlov er

Paducah, KY

#271 Jul 21, 2013
kickerthefordlover wrote:
<quoted text>. I READ HERE ON THIS FORUM THAT THERE IS A GROUNDING ISSUE WITH THE MAIN COMPUTER. ELIMINATE ALL GROUNG AS TO HOW THE BOX FITS IN ITS HOLDER BY USING FLAT RUBBER. AND REPLACE THE CRANK SENSOR AGAIN. IT'S BEEN A MONTH NOW AND MY 99 HAS NOT STALLED YET ! Knock on wood
Really is something about these Jeeps. After replacing my girlfriends crank sensor and eliminating all metal to metal contact on the main computer due to a grounding issue causing shortages and whatever issues it has now been 2 1/2 months since my girlfriend has had an issue with her 99JGC.
kickerthefordlov er

Paducah, KY

#272 Jul 21, 2013
On a 99 JGC , there is a bad connection with the computer. Eliminate all grounding so as to prevent shortages to other parts in the system. Cost is nothing. Me? I replaced my girlfriends crank sensor. Reason being is that it controls your RPM and idling when your foot leaves the throttle and after 2 1/2 months no stalls.
kickerthefordlov er

Paducah, KY

#273 Jul 21, 2013
This post is dated 2008 ! Advance yourself to the present date and your conclusions may be more helpful ! Your welcome !
DEW

Mobile, AL

#274 Aug 1, 2013
Up to 1000 as well. Jeep was running fine. Suddenly started stalling out, sometimes on acceleration - sometimes when slowing down, then occasionally - hard to start. Took car in three times and got a tune up and replaced ignition coil, spark plugs, sensors and now PCM. Fingers crossed...waiting on call.
kickerthefordlov er

Chesapeake, OH

#275 Aug 1, 2013
DEW wrote:
Up to 1000 as well. Jeep was running fine. Suddenly started stalling out, sometimes on acceleration - sometimes when slowing down, then occasionally - hard to start. Took car in three times and got a tune up and replaced ignition coil, spark plugs, sensors and now PCM. Fingers crossed...waiting on call.
I did that too with the coil which was odd for me but easy, plugs ! Been about 3 1/2 months and still going strong. Don't forget about the grounding issue with the computer ! I really believe that gas a lot to do with shortages in the electrical system !
Wendilicious3

Middletown, CT

#276 Aug 13, 2013
Matt wrote:
i have a 98 jeep grand Cherokee and i just replaced the crank position sensor and just as im getting ready to pull out of the mechanic shop it stalls. driving it and speeding and slowing down doesn't stall now. i stopped at the store real quick let it run and when i jump into it and put it in reverse it stalls. it seems like its working much better but it stalls still!!!!!!!!!! someone have any idea what i could do to fix this? i have read about the ecm screws but i have no idea what the ecm is, can anyone tell me where to find it and what it looks like on a 4.0?
I have a 98 Jeep Grand Cherokee and it stalled out in reverse , turns out it was a transmission issue . I had the transmission rebuilt and it stopped !$ 3000. later ..
Wendilicious3

Middletown, CT

#277 Aug 13, 2013
My 1998 Jeep Grand Cherokee stalled out in reverse several years ago . My dad a master mechanic could not figure it out ! It turned out to be the transmission . We had it rebuilt and it has been fine since ! 150 K and still going strong !!
Cheryl woods

Australia

#278 Aug 14, 2013
I have a problem with my 98 Jeep, some times it don't want to start and when it does it runs really rough, I've changed the battery, plugs, leadspoints, Starter motor I've had the fuel injection serviced and still it runs rough, can any one help me plez
kickerthefordlov er

Chesapeake, OH

#279 Aug 15, 2013
These jeeps at this year had grounding issues with the computer. I believe that when the computer is separated from the metal around it by placing a rubber shield around it will fix a lot of issues with all problems with this year jeep. Eliminate the metal to metal contact and problems will stop !
JOE

Bloomington, IL

#280 Aug 25, 2013
here is my problem with my 1998 JGC was heading to work and it just dies while excellerating, cranks but will not start, a friend of mine puts it on his error device and it comes up no errors,has fuel pressure but no fire. we get to looking around and notice the loctronics security device is off, pull out the security key and it flashes green for a bit then flashes red, put security key back in and it goes solid green for a couple of seconds then out. Contact the people at loctronics and they tell me the system has died. Ordered the bypass plug and am waiting for it to arrive. Hopefully this cures it but have my doubts because I have pulled the security key out before while it was running and it kept running. Guess ya gotta start somewhere and this seems to be the most obvious, will let yall know.
Just-Tone

Chesapeake, OH

#281 Aug 25, 2013
well, after months of nor driving the Jeep, we started driving it again about 3 months ago. everything was fine for about 2 months and then a month ago it started pulling this stalling crap again. Im going tomorrow to get the Crankshaft Position Sensor from Jeep; no cheap parts store replacement for me. ive read that a lot of folks have good luck with the oem Jeep part. After MUCH research, this seems like the underlying issue.
Cody_wall

Oak Creek, WI

#282 Sep 23, 2013
Stelios wrote:
OK people. An ECM is the engine's computer (electronic control module). Some vehicles that have separate engine and transmission computers have ECM's and TCM's. In some vehicles both the engine and trans control modules(computers) are in one unit called a PCM (powertrain control module). The Jeep Grand Cherokee has a PCM. When a new PCM is installed in a vehicle, it must be flashed (programmed) so that it will work with the other computers in the veh (like the BCM or Body Control Module which controls things like the alarm sys, etc)...Some vehicles have an epromm chip that must be swapped over from the old to the new PCM, and some makes, models don't need flashing at all (depending on the year) but for the 93 to 98 (at least) Jeep Grand Cherokees, they need to be purchased pre-flashed (Auto Zone, Checkers etc) or if bought new must be flashed at a Dealer for around $100. Check engine light does not have to be on for the PCM to be bad...In my 97 GC with the 4.0 6 cylinder engine, in my case improper/infrequent maintenance caused the spark plug wires to build up too high a resistance and draw excessive pwr, the high ohms in the wires caused power to backfeed into the PCM and burned it out causing it to stall randomly, then frequently. The fix is to replace the PCM along with the spark plugs, wires, distributor cap and rotor to prevent that from happening to the new PCM. Mine's going strong for over a year now.
If i replaced the spark plugs, wires, distibutor cap, and rotor already less then 300 miles ago should i have to change them again after replacing a the pcm?
P.S. before changing all of that i had no problems wondering if this would have caused the stalling in the first place
Cody_wall

Oak Creek, WI

#283 Sep 23, 2013
Leo from Round Rock wrote:
You need to remove the ECM, take the board out and peel off the electrolitic gel and resolder the pins that are connecter to the board from the connectors. GO non the jeepforum dot com and search for ecm fix. There is a good write up with pictures. I did this to 2 jeeps, one of which no longer ran and I bought for cheap. TOok me about an hour to do the whole fix.
Not all PCM are the same some of them are in one piece and can't just be unscrewed and be re-solderer. Mine seamed as if it was once flat bent around the center piece and screwed back together no taking apart and re-soldering for some of us
Just-Tone

Baltimore, MD

#284 Sep 24, 2013
well, replacing the cps did not fix the issue. the only time it does it is when you do not have throttle applied. im thinking more and more like its the tq converter now. if this was an ecu issue, it would do it when a bump is hit. we ve had zero issues when the throttle is depressed while hitting bumpy roads, but it will cut out when sitting still at a light at idle or when slowing to a light on smooth roads.
bill2bull

New Port Richey, FL

#286 Sep 27, 2013
I have been a mechanic for 25 years. One of the most common problems on these Jeeps is the harness at the PCM. Use a couple of plastic zip ties and tie the harness up so it is not hanging on its own weight. This usually fixes the stalling issues as ong as there are no fault codes.
richard v

New York, NY

#287 Oct 10, 2013
i have a 98 zj 4.0 im going f-ing crazy try to get a new pcm i found a guy on ebay 2 guys one with the exact same pcm numbers and everything is it plug abd play or do i need to get flash he says no just put in and drive the bcm stores or the info mileage ect can anybody help me should i buy it or not
richard v

New York, NY

#288 Oct 10, 2013
i have a 98 zj 4.0 i found a guy with the exact same pcm nunmbers abd everything is it just plug and play or has to be flash please someone help im dying over here
kickerthefordlov er

Paducah, KY

#289 Oct 10, 2013
bill2bull wrote:
I have been a mechanic for 25 years. One of the most common problems on these Jeeps is the harness at the PCM. Use a couple of plastic zip ties and tie the harness up so it is not hanging on its own weight. This usually fixes the stalling issues as ong as there are no fault codes.
SAD THING IS THAT NOBODY READS PAST THE FIRST PAGE AT THE BEGINNING OF THIS FORUM AND WONT PICKUP ON THIS IDEA FOR WHICH I HAVE USED AND FIVE MONTHS LATER STILL NO PROBLEMS. I NOT ONLY USED ZIP TIES BUT I SEPARATED METAT TO METAL CONTACT AT THE PCM AND ITS HARNESS DUE TO A SHORTAGE PROBLEM CAUSING VARIOUS SHORTAGES THROUGHOUT THE SYSTEM ! BUT ?
kickerthefordlov er

Paducah, KY

#290 Oct 10, 2013
KSH wrote:
I have read several different articles about Jeeps in other years and models having stalling issues and seem to be right in the middle with everyone else. Seems like this Jeep is becoming a money pit. Have had the vehicle coded twice now and replaced the ignition coil twice along with a fuel pump and still no fix. Have read about the torx bolts on the PCM and will try that tomorrow, but like all of you out there with this problem, mechanics are sucking us dry!!! HELP!!! Is there anyone with a real solution? It seems there should be some sort of recall if this is happening to a lot of Jeep ownwers. Bought this Jeep from a used car dealer and had to have the transmission replaced after only having it 3 weeks. Could it be possible that the crankshaft sensor wire got knicked or damaged and causing a short?
This is page ONE of many many many questions and responses !!!! Advance to the very last page ( which would be todays date ) and your problems will have answers !Read and understand ! Don't let a mechanic rape you over the coals until you have read the symptoms ! A side mechanic and an hour of his time will resolve these issues .GO TO THE VERY LAST PAGE
kickerthefordlov er

Paducah, KY

#291 Oct 10, 2013
I have come to believe that JEEP owners lack common sense and love spending their money on foolish repairs rather than reading past page one of this forum. OMGsh !

Tell me when this thread is updated:

Subscribe Now Add to my Tracker

Add your comments below

Characters left: 4000

Please note by submitting this form you acknowledge that you have read the Terms of Service and the comment you are posting is in compliance with such terms. Be polite. Inappropriate posts may be removed by the moderator. Send us your feedback.

Mesa Discussions

Title Updated Last By Comments
News Is prostitution and sex taking place in Scottsd... (Oct '09) Tue Brother Smith 226
how many nurses have had lost there license bec... (Aug '07) Tue LAVON AFFAIR 2,677
Trump for President, He will win. watch (Aug '16) Mar 17 D D Home 7
News Do you know a Muslim? No? Group hopes to change... Mar 14 True Christian wi... 4
Review: Xanas Palace (Jan '16) Mar 13 footguymike 5
New recorded gangs in Arizona.... (Jun '07) Mar 11 Ese Spider G 2,129
News Okay, It's Not the Oscars, But We Promise Not t... Mar 5 Rhonda Welborn As... 2

Mesa Jobs

More from around the web

Personal Finance

Mesa Mortgages