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Unread 06-22-2012, 07:08 PM   #1
4x4jeepman777
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1997 ZJ 
 
Join Date: Jun 2012
Location: huber heights, ohio
Posts: 1
1997 zj 5.2

for the past month my jeep has been stalling out on me. When i go to start it it will start up but will shut off second later and it will do it some times for 5 min somethings for 5 seconds. I relaced the ignition coil battery altenater and battery terminals. it seems to do it more when i put my foot in it. It will do it just driving down the road at a steady speed sometimes. I dont want to just keep throwing money at it and not fix it. any advise? thanks

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Unread 06-22-2012, 08:25 PM   #2
JasonStebbins
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1997 ZJ 
 
Join Date: Jan 2009
Posts: 3,138
Sounds like the Crank Position Sensor. They are a very common failure on ZJ's. No-start issues and stalling issues.

The Throttle Position Sensor is also common to go bad. But symptoms would be sputtering/hesitation when punching the gas.
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Unread 06-22-2012, 11:24 PM   #3
mrclark25
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1994 ZJ 
 
Join Date: May 2012
Location: grand island, nebraska
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could be the fuel filter. might as well replace it since it is a tune-up item.
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Unread 06-23-2012, 12:09 AM   #4
Scopez
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1994 ZJ 
 
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Location: Aiken, SC
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If I'm remembering correctly, the fuel pump and fuel filter are attached together? You supposedly should never have to replace the filter in a ZJ. Please correct me if I'm wrong though.

Back to topic, I would GUESS its the fuel pump or the Crank Position Sensor.
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94 ZJ Laredo. 5.2 Crate engine. 6in JKS SA Lift. 33in Destination MTs. ARB Front Bumper.
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Unread 06-23-2012, 09:24 AM   #5
sebian
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1995 ZJ 
 
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Location: Austin, TX
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If it is just shutting down, and not sputtering I would go with the crank position sensor. But before replacing it, I would test it. You can test the TPS while you have the multimeter out.

Fuel filter is part of the fuel pump on the 96-98.
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Unread 06-23-2012, 09:26 AM   #6
JasonStebbins
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1997 ZJ 
 
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Quote:
Originally Posted by Scopez View Post
If I'm remembering correctly, the fuel pump and fuel filter are attached together? You supposedly should never have to replace the filter in a ZJ. Please correct me if I'm wrong though.

Back to topic, I would GUESS its the fuel pump or the Crank Position Sensor.
1993-1995 the filter was outside the tank. 1996-1998 the filter was inside the tank.

I wish they made fuel filters that lasted forever.

I'm still leaning towards CPS. A bad fuel pump would cause it to not start/run period. Once it went bad.

Check fuel pressure lately?
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Unread 06-23-2012, 04:11 PM   #7
JeepGC8
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1996 ZJ 
 
Join Date: Dec 2011
Location: draper, utah
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Mine was doing a similar thing so i replaced the cps sensor and that didn't help so i changed my fuel pump and that didn't do anything so my dad decided to take out the relay and take it apart and it was all rusted and corroded so we cleaned it off and it fired right up and hasn't had a problem since. So id check the relays and that sensor then move to the filter or fuel pump
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