hairball440
NAXJA Forum User
- Location
- N.H.
Why Why Why is my XJ stalling every 30 mins. after i start it I wait an hour or so and it runs awesome ? New MSD coil, fuel filter, crank sensor .Turns over just won't fire up .I need help.It's an 87 4.0L
Do a search for the crank position sensor (CPS). When they start to fail, heat will make them cut out.
OP said he replaced the crank sensor already.
I did all the cleaning and checking to mine, which worked... for a while. When the issues started again I went ahead and cut the connector out and replaced it with a pair of connectors from a Chrysler something or other out of the junk yard and haven't had a problem since, that was 5 years ago. You can just solder the wires together without a connector but I prefer the ability to disconnect the chassis wiring harness from the engine wiring harness in one spot. Good luck.