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95 zj 5.2 start and die issues

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Old May 27, 2023 | 03:12 PM
  #1  
zjchief's Avatar
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Joined: May 2019
Posts: 77
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From: Poteau, Oklahoma
Year: 1995
Model: Grand Cherokee (ZJ)
Engine: 5.2
Default 95 zj 5.2 start and die issues

It was running perfectly when I pulled it in the garage, sat for a few weeks due to work schedule, but while it was sitting I changed out the O2 sensor, map and crank sensor, and the oil. Ok so with that said, I can start the jeep but it runs rough then sounds like it's choking and dies. I can keep it running like crap longer with throttle but as soon as I let off it dies. Swapped out tps nothing changed. All connections are good, all wires looked good.tried the key in all doors and hatch. I'm gonna try and get some codes maybe that will point me in the right direction. Anything y'all can think of will help thanks.

​​​​​​JUst ran codes it showed:
12 battery disconnect
33 no AC relay
14 MAP voltage too high or low
24 tps voltage too high or low
55 end code


Parts recently replaced due to age/condition:
MAP sensor
Battery and all cables /grounds
Crank position sensor
O2 sensor
Plugs and wires
Alternator
fuel pump and lines

Last edited by zjchief; May 27, 2023 at 03:27 PM.
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Old May 28, 2023 | 10:55 AM
  #2  
zjchief's Avatar
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From: Poteau, Oklahoma
Year: 1995
Model: Grand Cherokee (ZJ)
Engine: 5.2
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Charged my battery and the codes are gone besides the AC relay, battery disconnected and end code. Now it just starts and dies, anything else I can try. I have 2 purple wires with yellow stripe, how can I tell which one to cut and ground?
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Old May 28, 2023 | 08:11 PM
  #3  
zjchief's Avatar
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From: Poteau, Oklahoma
Year: 1995
Model: Grand Cherokee (ZJ)
Engine: 5.2
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Fixed and running better than it ever has no thanks to CF
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Old May 29, 2023 | 01:59 PM
  #4  
wingless's Avatar
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Year: 1994
Model: Grand Cherokee
Engine: 5.2L Magnum V8 220hp 285ft-lbs
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What was the fix that corrected the problem?
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Old May 30, 2023 | 12:28 AM
  #5  
zjchief's Avatar
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Posts: 77
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From: Poteau, Oklahoma
Year: 1995
Model: Grand Cherokee (ZJ)
Engine: 5.2
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The pick up coil in the distributor was a bit crusty and so we're all the contact points in my distributor cap. It had been sitting around a year and I just overlooked it. Changed em out and fired up as soon as the key turned and runs perfectly. Ran it a while, killed it restarted and runs like a top. Took it for a shakedown run on my trail around my property today with no issues at all.
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