My ZJ is dead in the water..... - JeepForum.com

 
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post #1 of 13 Old 05-24-2013, 11:12 AM Thread Starter
BeRight
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1993 ZJ 
 
Join Date: May 2013
Location: pocatello
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My ZJ is dead in the water.....

Its simple, I was driving and as I was approaching a stop sign I noticed my Jeep starting to "stall" (its an automatic) and that was the end of it. I thought my fuel pump went out, so I replaced that. It turns over but wont start. Check to make sure I have fuel and correct pressure. My spark plugs are all sparking. Distributor cap is on time. Relays all still working. It turns and turns and turns but wont start. The only possibility I can think of is that the timing chain somehow jumped teeth. I got nothing guys, any insight?

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post #2 of 13 Old 05-24-2013, 11:41 AM
dellis
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2005 WK 
 
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Location: Vienna
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post #3 of 13 Old 05-24-2013, 04:30 PM
Rich93ZJ
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1993 ZJ 
 
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Location: Richland
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crank position sensor
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post #4 of 13 Old 05-24-2013, 04:38 PM
just_urd
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1998 ZJ 
 
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Location: Whittier
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Quote:
Originally Posted by Rich93ZJ
crank position sensor
^My first thought^. Diagnose from easiest to hardest in relation to the problem. At least you've got a fresh fuel pump...
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post #5 of 13 Old 05-24-2013, 05:33 PM
rooster51
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1997 ZJ 
 
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Quote:
Originally Posted by rich93zj View Post
crank position sensor
x3.
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post #6 of 13 Old 05-24-2013, 07:54 PM
ZeeJay1997
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post #7 of 13 Old 05-24-2013, 10:06 PM
Rich93ZJ
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Almost forgot. MOPAR ONLY!!!!!!!!!!. Don't use the cheap autoparts store Chinese crap.
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post #8 of 13 Old 06-06-2013, 07:26 AM Thread Starter
BeRight
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1993 ZJ 
 
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The crank position sensor should set a dtc code and I've got none.
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post #9 of 13 Old 06-06-2013, 07:44 AM Thread Starter
BeRight
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1993 ZJ 
 
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Location: pocatello
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Heres my report from the dirty dozen.....
The Brain.... Its worth a shot just havent had time yet
Grounds....worth a try
PDC....checked and cleared
Battery and Cables........needs a good cleaning
Fuel quality....looks and smells good
Fuel Pressure......at spec
Secondary Ignition... Fine
Connection....It doesnt run so I cant try it. But it wasnt running poorly before it dies except for the 2 minutes prior.
Wiring.....Anything like that should set a check engine light
Throttle body....Shouldnt cause it to completly not run
vaccuum leaks...none
Restricted Exhaust....cut exhaust before the cadalytic converter...no change
But this list gives me other things to check as well
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post #10 of 13 Old 06-06-2013, 08:07 AM
dellis
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2005 WK 
 
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Location: Vienna
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I think you are giving your Check Engine Light too much credit ... faulty wiring will not always set a CEL. Also, I think most people on this forum who have had problems with weak/failing Crankcase Position Sensors did not have a CEL.


Quote:
Originally Posted by Rich93ZJ
Almost forgot. MOPAR ONLY!!!!!!!!!!. Don't use the cheap autoparts store Chinese crap.
The last MOPAR part I received had stamped in big bold letters, "MADE IN CHINA". You cannot escape ...
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post #11 of 13 Old 06-06-2013, 12:20 PM
dusterdude
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1996 ZJ 
 
Join Date: Jan 2012
Location: hopewell
Posts: 2,052
Quote:
Originally Posted by BeRight
The crank position sensor should set a dtc code and I've got none.
Not always,mine didnt
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post #12 of 13 Old 06-06-2013, 04:10 PM
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Posts: 8,632
Quote:
Originally Posted by dellis View Post
I think you are giving your Check Engine Light too much credit ... faulty wiring will not always set a CEL.
x2
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post #13 of 13 Old 06-06-2013, 04:12 PM
riot1987
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1997 ZJ 
 
Join Date: Jun 2012
Posts: 5,040
Sounds like similar symptoms of when my cps went out

http://www.jeepforum.com/forum/f22/riots-97-grand-1436100/

Build thread^^
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dead , fuel pump , mystery , timing chain , zj

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