Emilio
NAXJA Forum User
- Location
- United Arab Emirates
Hello everyone,
I'm new in this forum and I would ask some advice regarding this TJ with a very random problem.
The vehicle runs fine all the time but, at one point, engine cuts off for one or two seconds while driving and then back normal, sometimes is not possible to reproduce the problem for one or two days, it doesn't memorize any DTCs the rpm gauge doesn't drop. The cut off is very sharp, like someone switch off the engine and start again very rapidly.
CPS, distributor sensor, spark plugs, distributor cap, high voltage cords and coil were replaced in the summer during a big service.
After that, we replaced the coil gain with a known good one, TPS, relays, and re-wire positive and grounds on the PCM plus re-wired the connection with the coil.
One time I managed to reproduce the problem while my oscilloscope was connected to the injectors and the signal was there.
I'm suspecting that the distributor could be the problem, since the shaft has some play left and right or maybe the PCM itself, I read many stories about PCM.
Does someone had the same problem?
Thank you
Emilio
I'm new in this forum and I would ask some advice regarding this TJ with a very random problem.
The vehicle runs fine all the time but, at one point, engine cuts off for one or two seconds while driving and then back normal, sometimes is not possible to reproduce the problem for one or two days, it doesn't memorize any DTCs the rpm gauge doesn't drop. The cut off is very sharp, like someone switch off the engine and start again very rapidly.
CPS, distributor sensor, spark plugs, distributor cap, high voltage cords and coil were replaced in the summer during a big service.
After that, we replaced the coil gain with a known good one, TPS, relays, and re-wire positive and grounds on the PCM plus re-wired the connection with the coil.
One time I managed to reproduce the problem while my oscilloscope was connected to the injectors and the signal was there.
I'm suspecting that the distributor could be the problem, since the shaft has some play left and right or maybe the PCM itself, I read many stories about PCM.
Does someone had the same problem?
Thank you
Emilio