1997 Grand Cherokee Stops Running Suddenly - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > 1997 Grand Cherokee Stops Running Suddenly

Attention to the TJ owners 1996-2006 NEW LED LIGHT OPTIONSBaseline 4x4 Lifetime Warranty 4340 Chromoly Axle Shaft KiBushed Sleeves & Poly Bushings!

Reply
Unread 12-01-2009, 05:37 AM   #1
hgoodwiniii
Registered User
 
Join Date: Dec 2009
Location: Houston
Posts: 56
1997 Grand Cherokee Stops Running Suddenly

Hello everyone, my name is Herbert and I am new to the forum. I hope everyone is well. I have having a sporadic problem with my 1997 Grand Cherokee. The engine just suddenly stops at times. It happens mostly when removing my foot from the accelerator while coming to a stop. Usually, the vehicle restarts immediately without any problem. At other times, it spudders when restarted for a couple of tries. This problem is very sporadic and seems to happen about once a week and appears to happen only when the weather is cool or cold. I've had the ccm, crank sensor, tps and fuel assembly changed. Has anyone experienced this problem?

hgoodwiniii is offline   Reply With Quote
Unread 12-01-2009, 06:27 AM   #2
Sextiva
Registered User
1996 ZJ 
 
Join Date: Nov 2009
Location: ky/in/fl
Posts: 322
How Does an Idle Air Control Valve Work? IAC

Hope this helps.
Sextiva is offline   Reply With Quote
Unread 12-01-2009, 06:49 AM   #3
hgoodwiniii
Registered User
 
Join Date: Dec 2009
Location: Houston
Posts: 56
I may have changed it already. I'll check it out. Thanks.
hgoodwiniii is offline   Reply With Quote
Unread 12-01-2009, 08:40 AM   #4
jeepguy86
Registered User
1997 ZJ 
 
Join Date: Jun 2005
Location: Ada, OK
Posts: 24
I am currently experiencing this same problem with my 97 Jeep GC. Only I have had occassions when it has taken more like 15 tries to get it to finally turn over. Had it at the mechanic but the engine never stopped when they test drove it, multiple times... only does it at random times, very strange indeed... If you find a solution that works let me know.
__________________
[COLOR=Navy]1997 Grand Jeep Cherokee
Red
[/COLOR]
jeepguy86 is offline   Reply With Quote
Unread 12-01-2009, 09:32 AM   #5
tkc
Registered User
1996 ZJ 
 
Join Date: Sep 2009
Location: san jose
Posts: 67
About a month ago, my car got really bad where the oil pressure needle would drop to zero when I came to a stop like at a light or whatever.

Turns out it was the oil pressure sensor that went bad. I was able to pick one up at the local auto parts store and replaced it. On my 1996, the sensor was located on the back side of the engine, at the top, near the center. Right between the motor and the windshield.

Just a thought, incase your oil pressure needle was dropping when this happens.

Good luck!
tkc is offline   Reply With Quote
Unread 12-01-2009, 04:00 PM   #6
ZeeJay1997
Registered User
1997 ZJ 
 
Join Date: Dec 2008
Location: right now I'm in, Texas
Posts: 5,719
Quote:
Originally Posted by hgoodwiniii View Post
Hello everyone, my name is Herbert and I am new to the forum. I hope everyone is well. I have having a sporadic problem with my 1997 Grand Cherokee. The engine just suddenly stops at times. It happens mostly when removing my foot from the accelerator while coming to a stop. Usually, the vehicle restarts immediately without any problem. At other times, it spudders when restarted for a couple of tries. This problem is very sporadic and seems to happen about once a week and appears to happen only when the weather is cool or cold. I've had the ccm, crank sensor, tps and fuel assembly changed. Has anyone experienced this problem?
Welcome Herbert

Try gently wiggling the PCM connectors and tapping on the PCM while the engine is cold.

Also try swapping the fuel pump relay and the ASD relay with the horn or int wiper relay.

Also see this thread post 22
http://www.jeepforum.com/forum/f13/s...s-help-859227/
ZeeJay1997 is offline   Reply With Quote
Unread 12-01-2009, 04:11 PM   #7
Az-Green
Registered User
1994 ZJ 
 
Join Date: Nov 2009
Location: Arizona
Posts: 47
My ZJ just took a **** on me a few days ago and the problems were very similar to this. Have you had your fuel pump checked out? Mine was toast. It's replaced and runs like a monster again.
Az-Green is offline   Reply With Quote
Unread 12-01-2009, 04:14 PM   #8
Sextiva
Registered User
1996 ZJ 
 
Join Date: Nov 2009
Location: ky/in/fl
Posts: 322
You could prolly test the ASD and Fuel when it happens. Just see if the pump is priming.
Sextiva is offline   Reply With Quote
Unread 12-01-2009, 05:16 PM   #9
hgoodwiniii
Registered User
 
Join Date: Dec 2009
Location: Houston
Posts: 56
Will do. Thanks for all the suggestions. By the way, what's the ASD?
hgoodwiniii is offline   Reply With Quote
Unread 12-01-2009, 05:47 PM   #10
Sextiva
Registered User
1996 ZJ 
 
Join Date: Nov 2009
Location: ky/in/fl
Posts: 322
Its a relay that kills spark and fuel to keep from damaging your vehicle. It will feel like someone reached over and turn your key off if its engaged. Chrysler likes to use em.
Sextiva is offline   Reply With Quote
Unread 12-01-2009, 05:59 PM   #11
Curly5759
Registered User
1997 TJ Wrangler 
 
Join Date: Apr 2009
Location: Arizona
Posts: 606
Quote:
Originally Posted by Sextiva View Post
Its a relay that kills spark and fuel to keep from damaging your vehicle. It will feel like someone reached over and turn your key off if its engaged. Chrysler likes to use em.
You have that backwards. The ASD (Auto Shut Down) relay is used to provide power to the ignition, fuel pump and injectors.
It receives 12 volts from the ignition switch and ground from the computer. The computer will turn the relay off (remove the ground) if the RPM signal from the Crankshaft sensor disappears or is not present.

Curly
Curly5759 is offline   Reply With Quote
Unread 12-01-2009, 06:02 PM   #12
BLACKzj52
Registered User
1996 ZJ 
 
Join Date: Mar 2007
Location: ohio
Posts: 5,663
welcome to the forum

dont forget to check for some vacuum leaks around the intake manifold. you can do this by taking throttle body/carb cleaner and spraying it around the hoses that connect to the sides of the manifold. if the idle increases you have a vacuum leak at the area you just sprayed.
__________________
- John - 23 and learning <-- ORIGINAL
- 1996 Black ZJ Limited: 5.9 swap, LA's, axles, absolutely built to hell
- 1998 Platinum 5.9 Limited: DD with some lighter modifications
My Build Thead
Facebook
Senior at The Ohio State University
BLACKzj52 is offline   Reply With Quote
Unread 12-01-2009, 06:15 PM   #13
ZJ5point2GCL
Registered User
1998 ZJ 
 
Join Date: Oct 2009
Location: Calgary
Posts: 3,392
my vote is the IAC especially if its when you take your foot off of it
ZJ5point2GCL is offline   Reply With Quote
Unread 12-01-2009, 06:32 PM   #14
Sextiva
Registered User
1996 ZJ 
 
Join Date: Nov 2009
Location: ky/in/fl
Posts: 322
Quote:
Originally Posted by Curly5759 View Post
You have that backwards. The ASD (Auto Shut Down) relay is used to provide power to the ignition, fuel pump and injectors.
It receives 12 volts from the ignition switch and ground from the computer. The computer will turn the relay off (remove the ground) if the RPM signal from the Crankshaft sensor disappears or is not present.

Curly
Pretty sure like in the old 2.2 turbos, if you hooked a boost controller up and cranked up the boost. The MAP would see the increase in manifold pressure, and say oops overboosting, and cut spark and fuel. Could be wrong tho
Sextiva is offline   Reply With Quote
Unread 12-01-2009, 06:59 PM   #15
ZJJay
Senior Member
 
ZJJay's Avatar
1996 ZJ 
 
Join Date: Nov 2009
Location: Mission Viejo, CA
Posts: 634
I've had similar problems in the past two years. First time the shop found a bad ground on the Auto Shut Down relay. Worked fine for a few months, then started acting up again. Actually it was running fine, then wouldn't start. The crankshaft position sensor had failed, which is a common problem. Recently I had a wildly fluctuating idle at start up. I changed the Idle Air Control valve and fixed that problem. When replacing the IAC valve, be sure to clean out the area inside the throttle body. I didn't want to spray carb cleaner in there, just to wash all of that carbon and gunk down into the passages. I dipped Q-tips in paint thinner to clean it out. Works fine now. I hope this helps.
__________________
'96 ZJ, 4.0L, 42RE, NP242, stock D30 and D35-LS w/ 3.73, 4-1/2" lift, 32" BFG ATs, Magnaflow, JKS track bars and disconnects, spare tire carrier, Optima red top, ROLA roof rack, KC SlimLite driving lights, CB and Yaesu ham radios, GPS
ZJJay is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.