patrick s
NAXJA Forum User
- Location
- palmer alaska
I have a 90 mj it is giveing me fits. I have checked all the sensors and they test good. The cps is reading .520 volts so it is good. The list is on #1 cyl. When running sounds like timing problem, back fires out exhaust and missing, cannot give it any throttle. I took a known good cps and slotted it to advance the timing. It ran a little better but not much, slotted it more and did run worse. The reason I slotted the cps is to check to see if the flex plate was wrong as some after market ones are bad. I am the 3rd owner and it was given to as no one could get it running right. It has the 4.0 engine and AW 4 trans, 231-case I get 10 in vacuum max, have 38psi fuel pressure. Any help would greatly appreciated.