northwestxj
NAXJA Member #1283
- Location
- washington
I have a 1993 XJ 4.0l that recently has started acting up. It started my last trip out wheeling, it would just shut off. Seem to happen much more going down hill. Generally would crank the normal amount of times and restart and sometimes would be fine, others would be badly misfiring and barely running. Giving it gas would not even do anything, it would continue to misfire. Then it would start running and be fine for a while, then randomly happen again. It also died twice driving on the street on the way home.
I figured that my problem is most likely the CPS/CKP (crankshaft) so I bought a new one from the dealer and replaced it a few days ago. Started right up on a test drive, but as I was driving up a hill and there was a little load on it, it started misfiring/sputtering. I parked it, turned it off and unplugged/replugged the CPS and it drove home fine. I drove it yesterday for a couple quick drives and it was fine. Drove it today to work and it was fine, but on the way home shortly after I left it started misfiring and popping out the exhaust under acceleration. Parked, unplugged/replugged the CPS again and it drove home fine.
Based upon what it's doing it seems like a bad CPS to me. However, I replaced it with a brand new one as I mentioned and it's still having problems. Before the new CPS it would just completely stall/shut off, now it misfires but still stays running. Seems weird to me that doing the old trick of unplugging/replugging the CPS seems to fix it for the time being and makes me lean towards issues with that still but it just seems weird considering it's a new OEM one.
Ideas? Thanks guys.
I figured that my problem is most likely the CPS/CKP (crankshaft) so I bought a new one from the dealer and replaced it a few days ago. Started right up on a test drive, but as I was driving up a hill and there was a little load on it, it started misfiring/sputtering. I parked it, turned it off and unplugged/replugged the CPS and it drove home fine. I drove it yesterday for a couple quick drives and it was fine. Drove it today to work and it was fine, but on the way home shortly after I left it started misfiring and popping out the exhaust under acceleration. Parked, unplugged/replugged the CPS again and it drove home fine.
Based upon what it's doing it seems like a bad CPS to me. However, I replaced it with a brand new one as I mentioned and it's still having problems. Before the new CPS it would just completely stall/shut off, now it misfires but still stays running. Seems weird to me that doing the old trick of unplugging/replugging the CPS seems to fix it for the time being and makes me lean towards issues with that still but it just seems weird considering it's a new OEM one.
Ideas? Thanks guys.