Bullstang360

Ok so I just put in a new CPS from the dealership and still no start. Now its throwing codes 11(for CPS) and 54 ( for distributor)....I checked and have no spark and I looked over my harness and don't see any visible damage. What are the chances my PCM is starting to take a dump?

Mattloz

See if your getting a signal at the coil, my problem was my ecu was fried then had spark and fuel but no start, after some help it turned out to be my coolant temp senso for not starting ( cold), now I was able to try break clean and it would turn on so give that a try after you resolve the spark issue

To test for signal ( one way) is to check for injector pulse also if you have a 91+ jeep I have a extra ecu

Bullstang360

I am going to do more testing and research. I just replaced the ECU 2 years ago. I'm going to comb over the entire wiring harness. It's not my daily anymore so I have time.

Mattloz

Ok what year do you have 91+

dannyrob

I have a 92 changed every thing I can think of still start for only a second and dies also seems to be running to rich exaust gets very hot after try to start several times already replaced entire exaust ;computer;crank sencer;dist.;all relays under hood;tps;air intake valve;map;fpr;getting good fire good fuel preshure good compression there is a small box under dash
on driver side can that cause a problem