Registered: Jun 2003
Location: Washington, NC
Posts: 3314

My daughter has a '97 Jeep Grand Cherokee with a inline 6 cyl. It got to where it would stall out when accelerating. I took it to a "jeep" mechanic and was told the ecm was going bad. I replaced it and it ran fine for several weeks , then started failing to start. It just quits firing. I can put pressure on the center plug on the ecm and make it start or cut it off. I put dielectric grease in the plugs, no better. It will start sometimes and sometimes not. I took the plug apart and found no problem. Every thing I have tested checks good. It shows no codes that should affect it. Does anyone have any suggestions?

I'm a Cat mchanic and am almost lost on cars now days.

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Bill Harper
Washington, NC
252-944-5592

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Registered: Jun 2003
Location: Washington, NC
Posts: 3314

No one has any ideas?

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Bill Harper
Washington, NC
252-944-5592

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Registered: Nov 2008
Location: indiana
Posts: 49

A coworker of mine had this problem witha chevy truck. It took 3 auto mechanics and about 6 months to fix. I seem to remember it was one wire to ecm that had bad spot, it tested good everytime but was bad. I will ask him tommorow what it was for sure.



Tom

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Registered: Apr 2006
Location:
Posts: 6548

good luck Bill.
check the recalls last time my buddy went in they replaced
transfer case back.

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Registered: May 2006
Location: Wiscoonsin
Posts: 1941

http://forums.cnet.com/7723-7811_102-248386.html

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Registered: Jan 2007
Location: cambridge, ohio
Posts: 137

REPLACE THE CRANK SENSOR LOCATED ON DRIVER SIDE OF BELLHOUSING HAD THE SAME PROBLEM THIS FIXED IT

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Registered: Jun 2003
Location: Washington, NC
Posts: 3314

Thank you all for the suggestions.

1deadeye, I looked up the thread you posted and it sure sounded like this jeep. I removed the screws (they were 1/2 in long) and put washers under them. The engine started right up and it did not cut off when I put pressure on the ECM plugs like it had been doing. I will pray that this has fixed the problem. I'll also not rest easy until it runs awhile with out the problem coming back though.

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Bill Harper
Washington, NC
252-944-5592

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Registered: Aug 2010
Location: guys mills ,pa
Posts: 2192

try the fuel module. should be twoards the tank, the computers will read funky and say that one bank isnt firing, and then talk you into a fuel pump. if not, try map sensor. for sure.

kelley yenny
branchville mtn coonhounds
can you speak english?

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Registered: Aug 2010
Location: guys mills ,pa
Posts: 2192

if i am right chew, i am bringin my 425 mechanical to you to overhaul.lol

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Registered: May 2006
Location: Wiscoonsin
Posts: 1941

Glad to hear Bill. Maybe when you grabbed the wire loom and wiggled it, it made it ground out. The Grands are known for a lot of electrical issues. Mostly with the anti-theft system.
Hope it fixed your problem.
Scott

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Registered: Jan 2008
Location: USA
Posts: 698

Junk Each & Every Part / Just Empty Every Pocket/ take your pick LOL

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Registered: Aug 2004
Location: Chattanooga, Tn
Posts: 22586

1nighthunter, I have had 3 Jeep Grand Cherokees. They all had 250,000-300,000 mi on them when I sold them and I had no problems.

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Registered: Mar 2009
Location: Grass Valley, Ca.
Posts: 40

quote:

---

Originally posted by Bill(Chew)
My daughter has a '97 Jeep Grand Cherokee with a inline 6 cyl. It got to where it would stall out when accelerating. I took it to a "jeep" mechanic and was told the ecm was going bad. I replaced it and it ran fine for several weeks , then started failing to start. It just quits firing. I can put pressure on the center plug on the ecm and make it start or cut it off. I put dielectric grease in the plugs, no better. It will start sometimes and sometimes not. I took the plug apart and found no problem. Every thing I have tested checks good. It shows no codes that should affect it. Does anyone have any suggestions?

I'm a Cat mchanic and am almost lost on cars now days.

---

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