jeep xj wont run after it warms up

[offroadin 88xj]

My 89 xj wont run after it gets warmed up its spits and sputters and cuts off and wont start back up till it cools off I've swaped out the crank sensor anybody have any other ideas of wat could be the problem

 

[XJfreakHO]

Did you overheat it recently?

 

[Chris_Keziah]

Maybe iat I can't remember my buddy had a similar issue, would not start while hot. He replace both iat and cps and fixes the problem.


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[offroadin 88xj]

Hasn't overheated lately ill try changing the iat sensor and see if that helps it

 

[transman731]

fuel pump can quit after it gets hot.

 

[lauryn.benedetti]

I'm having the same issue.. Trying to figure out if it is the physical pump or the relay to the pump that is shot.

 

[Jweezy]

sounds like ignition. coil or ignition control module

 

[amajeepman]

Bypass the ballast resistor on the drivers side fender well. You can google it and find plenty of write ups online on how to bypass it. Common problem on renix xj's.

 

[Infamous1]

tap on the ECM after it gets hot (i use a screwdriver handle)!! i had one last week at work and it was the ecm found some info on Napafix the pointed me in the right direction.

 

[offroadin 88xj]

Think its fixed I cleaned and relocated the oat sensor and has been fine so far

 

[offroadin 88xj]

Still not fixed replaced the fuel pump and its still doing the same thing

 

[Rwentz]

Im pretty sure i need help on this same problem. I thought it was my crankshaft position sensor, but then my jeep died again on a hill so i feel like it could posibily be the fuel pump, i dont know. I need help

 

[hadfield4wd]

I've gotten a brand new CPS from the parts store that was a bad part. Check your fuel pressure too.