1999 Jeep Grand Cherokee Stalls while...

1999 Jeep Grand Cherokee Stalls while driving or sitting

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Steve F

Bay City, MI

#1 May 1, 2011
Looking to see if anyone has this same issue with their Jeep, When driving or sitting the Jeep stalls but most of the time it starts right back up, have had afew times it took longer. I had changed out the fuel pump and filter but it doesn't do it all the time. I have the 4.0 litre engine, Any help would be very helpful, don't want to take to dealer yet.
Jeremy

Springville, UT

#2 Jul 10, 2011
Mine has had the same problem all spring. Goes up to driving temperature (210) and then can die at any minute, or not at all at times. Driving it is a gamble. It doesn't happen when it is cool outside. I have replaced the PCM, the Crank and Cam sensors and the problem persists. However, that seems to work for most people so look into replacing those parts. Mine is the 99 GC V8.
scott

Lodi, OH

#3 Sep 9, 2011
My jeep had the same issue its your crank sensor.
Steve

Tomball, TX

#4 Oct 9, 2011
1999 jeep GC- started stalling while driving, luckily able to pull out of traffic (no power). No lawsuits or recalls yet?
Katherine

Hartford, CT

#5 Feb 16, 2012
I just bought one and it stalled on me on highway twice while with my granddaughter in the car!!! Unacceptable!
donna

Cedar Park, TX

#6 Mar 25, 2012
My hubby has replaced everything we can think of including the crank shaft sensor...and it's still stalling. Anyone have any other ideas? We're going nuts here!
satcholic

Mexico

#7 Mar 26, 2012
My JGC V8 2000 has the same problem , Today I replaced the CPS and nothing.... What's next?
Rachael

Bellingham, WA

#8 Mar 27, 2012
Mine had the same issue, I replaced the fuel pump as well and it didnt help it, it actually got worse that day and wouldnt start at all so I replaced the coil and now it doesnt do it so try the coil because they go out soooo quick in jeeps it is rediculous! The coil that I replaced looked brand new too..
ZENO001

Spring Hill, FL

#9 Apr 1, 2012
I have a 97 Grand cherokee.
I am an ASE certified Tech. Same problem ,stall at random and sometimes starts back up.When it stalls there is no power going to the ignition coil nor power going to the fuel injectors.I replace the sensors and the pcm and It still did not fix problem. I finally found the problem . It is a bad wiring harnest in the engineering bay. It is part of the harnest that connects to the pcm. The pcm is losing signal from the sensors and shuts the engine down. I called chrystler and they want 1500 for the harnest.(not to mention they do not manufacture it any more)
I am still working on finding wich wire is not connecting properly. It happens so randomly it's hard to trace. I will let everyone know.
Good luck

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Ken in KC

Kansas City, MO

#10 Oct 13, 2012
ZENO001 wrote:
I have a 97 Grand cherokee.
I am an ASE certified Tech. Same problem ,stall at random and sometimes starts back up.When it stalls there is no power going to the ignition coil nor power going to the fuel injectors.I replace the sensors and the pcm and It still did not fix problem. I finally found the problem . It is a bad wiring harnest in the engineering bay. It is part of the harnest that connects to the pcm. The pcm is losing signal from the sensors and shuts the engine down. I called chrystler and they want 1500 for the harnest.(not to mention they do not manufacture it any more)
I am still working on finding wich wire is not connecting properly. It happens so randomly it's hard to trace. I will let everyone know.
Good luck

Anything on this wire possibity yet? Same prob, replaced PCM did not fix. I'm going to be doing 70 on the highway and kill someone, probably me! Come on Jeep!
LONAE BOOKER

Boerne, TX

#11 Nov 21, 2012
I live in arlington teaxs and i replace my wireing hardness for my 97 jeep grand cherokee and still i been having he same problem F.Y.I i did not go to the dealership to take off or put on my new hardness and now that i put it on its seems to work while as long as i got a half tank of gas but when it gets then it stats stalling eanyone got some ideas?
Alan

Fairfield, Australia

#12 Dec 17, 2012
Try the "O Ring" on the sender fuel pump module in the tank. A big job but may be worth while.
Ish

Springfield, NJ

#13 Jun 12, 2013
ZENO001,
Any chance you figured out the wiring issue? Having the same problem with my 99 JGC limited V8. Changed the Crank sensor and still stalls. Any help will be greatly appreciated..
Aan

Fairfield, Australia

#14 Jun 13, 2013
Guy's if this is happening when the gas tank is getting low or just under half. It could be the "O ring or X ring" on the fuel delivery module from the tank (inside the tank) to the fuel filter-pressure regulator. It is located just over the rear axle housing LHS. The small ring keeps the delivery pressure to the filter/regulator. A worth while exersise replace filter/reg, as well. These problems do not have a code.
JMA

Bensenville, IL

#15 Aug 15, 2013
1999 Jeep Grand Cherokee Limited 4.7.
Would die at idle, all gauges would drop off, including the volt gauge.
This rules out all sensors, fuel pump, fuel filter. Found the following and I FIXED my problem.
The ECM "engine control module", located under the hood behind the coolant overflow reserve tank on the passenger side. This 8" x 8" control module gets hot and the solder/pin connections crack and come lose causing erratic shut down. In time it cools off and the connections reconnect and it will run till the next time it got hot.
Here is how to test. You need a 10mm socket or wrench.
Start your engine, let idol or drive till it is HOT very hot, lift hood while running.
Remove 2 10mm bolts that hold in the overflow bottle, carefully move bottle to the side. You will see 3 large wire connector heads on the firewall that plug into the ECM each has about 30 wires connected to it.
Firmly, push in on each head one 1 at a time or wiggle each one 1 at a time. if your engine stops or sputters even once, your ECM is going bad at the terminals. Or the connectors / connections are weak.(most likely the ECM is bad) You can not repair yourself even if you remove and open. You will need to get a rebuilt. one from online, chose your supplier. type in 1999 Jeep ecm in Google.
If you buy used from "xxx" it may not work even though it looks the same. This module has to be programmed to your vin number each vin number tells the module info about your engine specifically. Dealers dont have any new ones either. good luck
Jeepster 1998

Victoria, TX

#16 Sep 3, 2013
Howdy all,
I have a 1998 JGC 6cyl...same problems. Started in May. So far this is what I have. Diagnosed voltage regulator issue had to change alternator. Still or no have the stall randomly issue. Checked wiring extensively not findng any wiring/fuse issue. If the interrupt is happening in harness could be terminal connector. will check that. I feel the voltage regulator is what started the problem possibly multiple issues from power surges to power outage...goodluck if I find something that stops this I will post back
Pro se

Toms River, NJ

#17 Nov 6, 2013
Solved the stalling-dead gauge problem on my 2000 jeep gc. Was driving me nuts. Only happened in the heat, but started in cooler temps. Cleaned off battery terminals. No good. Yanked on wires and terminals. No good. Replaced the crank and cam sensor. No good. Replaced the PCM on the firewall. No good. Finally realized the PCM was loosing power and the fuel pump was not initiating when tuning the key on (when the jeep was dead).. So a nice tech at STS said to replace the two relays in the engine compartment fuse box. And that worked. They cost $5 each and get bad after a while from the engine heat. So that was it after all the money I spent with other fixes. Yea. It was that simple. And I was stalling out constantly. Hope this helps you other guys.
AWM

Perth, Australia

#18 Dec 13, 2013
Steve F wrote:
Looking to see if anyone has this same issue with their Jeep, When driving or sitting the Jeep stalls but most of the time it starts right back up, have had afew times it took longer. I had changed out the fuel pump and filter but it doesn't do it all the time. I have the 4.0 litre engine, Any help would be very helpful, don't want to take to dealer yet.
Did you wind up finding the problem with your 4.0L Steve F? Oven the past week my '99 4.0 started to stall while driving and will usually start within a minute. It seems to be fuel delivery but I'm interested to see if you worked it out.
Liz

Saint Paul, MN

#19 Dec 15, 2013
So glad I found this post.
My 99 Jeep was living in MA until this Sept, when I moved to Minnesota. Since October, it's had this random stalling. The first times it just stopped - luckily on a Sunday in very light city traffic.
I had it jumped and the battery replaced, and a basic tune up in November. It was fine for a few drives, then happened again in light city traffic. New symptom is randomly not starting after having driven without any issues.
Yesterday, it finally happened while driving on the highway, stalled and thankfully started itself up after a burp/hiccup - but I almost crashed it out of fear!:)
Like Zen and Ken above, this appears random - not temp, gas volume, or speed related.
I'm completely freaked to drive it, since I never know when it will happen, but don't want to spend money for some wrong fixes. Can whoever finds a solid fix please let us know :) Thanks!!
Chasew

Jackson, MS

#20 Dec 20, 2013
Pro se wrote:
Solved the stalling-dead gauge problem on my 2000 jeep gc. Was driving me nuts. Only happened in the heat, but started in cooler temps. Cleaned off battery terminals. No good. Yanked on wires and terminals. No good. Replaced the crank and cam sensor. No good. Replaced the PCM on the firewall. No good. Finally realized the PCM was loosing power and the fuel pump was not initiating when tuning the key on (when the jeep was dead).. So a nice tech at STS said to replace the two relays in the engine compartment fuse box. And that worked. They cost $5 each and get bad after a while from the engine heat. So that was it after all the money I spent with other fixes. Yea. It was that simple. And I was stalling out constantly. Hope this helps you other guys.
which 2 relays did you replace?

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