Why will a 1986 Jeep Comanche crank but not spark?
Update on the 1988 Comanche that would not start … it started right up. The funny thing is that I didn’t even get to change out the Crankshaft Position Sensor (CPS) yet, because it was too cold for that mess today. But here’s the thing: it (the no-start condition) was related to the CPS. Since it was too cold to fool around on the engine block today, I unplugged and replugged the CPS connector a couple of times to see if that would get the truck started — and it did on the first crank. I read about this trick on-line somewhere, and I’ll be darned if it didn’t work. That’s definitely one to remember! In my truck, the CPS connector is right up on top, just to the driver’s side of the line of cylinders, back toward the firewall, and just forward of what looks to be the main wiring harness. Son of a gun.
