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Starts then dies right away, need some ideas

18K views 5 replies 3 participants last post by  swervegarden jr  
#1 ·
So I bought a '94 ZJ 5.2L about 4 months ago. Got it cheap cause it didn't run. PO said the fuel pump was shot but my guage says 45psi at the rail.

Engine starts right away, runs for 1-2 seconds then dies. Spraying some starter fluid at it cause it to run longer so I think its not a spark problem.

So far I have swapped the computer from my '93 ZJ, tried a spare coil I had, grounded the wire in the kick panel for the alarm system, swapped throttle bodies with my '93, swapped relays around(ASd and fuel pump). Nothing has made a bit of difference and I'm all out of ideas.

Any thoughts would be most appreciated.
 
Discussion starter · #2 ·
SOB! The PO told me that the ZJ was a '94, never thought to 2nd guess him on that. Was just out looking for the fuel regulator and it wasn't where is was supposed to be. Noticed that there were quite a few things that were different from my other '93 ZJs. Checked the door and sure enough its a '95!

'93 and '95 PCM aren't interchangable are they?
 
Discussion starter · #4 ·
Hmm interesting, I do have a security light that comes on but I didn't think a '95 had chips in the keys. Are you sure about that?

I'll try it anyway.

Anyone know if the security system on the '95s differs from the '93-94s? I was just doing the old lock and unlock the doors like I do on my '93s.
 
Discussion starter · #5 ·
IT WORKED! THANK YOU! This was driving me nuts! I don't think the key has a chip in it though as its not a Chrysler key but an Ilco copy. I think just leaving the key on for 10 min is what reset the security system.

Again THANK YOU!