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Unread 05-24-2013, 11:12 AM   #1
BeRight
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1993 ZJ 
 
Join Date: May 2013
Location: pocatello, Id
Posts: 3
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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Unread 05-24-2013, 11:41 AM   #2
dellis
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1998 ZJ 
 
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Location: Vienna, VA
Posts: 313
http://www.jeepforum.com/forum/f13/1...talls-1407423/

Report back.
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Unread 05-24-2013, 04:30 PM   #3
Rich93ZJ
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1993 ZJ 
 
Join Date: Sep 2012
Location: Richland, Ga
Posts: 454
crank position sensor
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Unread 05-24-2013, 04:38 PM   #4
just_urd
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1998 ZJ 
 
Join Date: Feb 2013
Location: Whittier, California
Posts: 136
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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Unread 05-24-2013, 05:33 PM   #5
rooster51
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1997 ZJ 
 
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Location: Virginia Beach
Posts: 1,634
Quote:
Originally Posted by rich93zj View Post
crank position sensor
x3.
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Unread 05-24-2013, 07:54 PM   #6
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Location: Sweet Home, Alabama
Posts: 6,386
Quote:
Originally Posted by dellis View Post
^^^x2
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Unread 05-24-2013, 10:06 PM   #7
Rich93ZJ
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1993 ZJ 
 
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Location: Richland, Ga
Posts: 454
Almost forgot. MOPAR ONLY!!!!!!!!!!. Don't use the cheap autoparts store Chinese crap.
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Unread 06-06-2013, 07:26 AM   #8
BeRight
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1993 ZJ 
 
Join Date: May 2013
Location: pocatello, Id
Posts: 3
The crank position sensor should set a dtc code and I've got none.
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Unread 06-06-2013, 07:44 AM   #9
BeRight
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1993 ZJ 
 
Join Date: May 2013
Location: pocatello, Id
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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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Unread 06-06-2013, 08:07 AM   #10
dellis
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1998 ZJ 
 
Join Date: Feb 2013
Location: Vienna, VA
Posts: 313
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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Unread 06-06-2013, 12:20 PM   #11
dusterdude
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1996 ZJ 
 
Join Date: Jan 2012
Location: hopewell, va
Posts: 2,044
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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Unread 06-06-2013, 04:10 PM   #12
ZeeJay1997
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1997 ZJ 
 
Join Date: Dec 2008
Location: Sweet Home, Alabama
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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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Unread 06-06-2013, 04:12 PM   #13
riot1987
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1997 ZJ 
 
Join Date: Jun 2012
Location: In your attic, with the squirrels and wrapping paper
Posts: 3,571
Sounds like similar symptoms of when my cps went out
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