My 92 SE, which my son has been driving, has developed a problem starting. Sometimes it just will not start.
Last weekend he was out of town and the car would not start. It turned over fine with no obvious problems. The next morning still no start. I drive the 65 miles to where he is and check for fuel pressure at the rail, it was ok with a good spray from the regulator. I check for spark at one cylinder and it was ok. And then it started fine. We tried it several times with two different keys (checking the key pellet) and it started fine. He drives it home, and it will not start later that afternoon.
The next afternoon it started up like normal, which is very quick. Yesterday he drives it to town with no problems and on his way home it starts acting up and he leaves it in a parking lot. He said it didn't want to run well, and he had to work the gas pedal to keep it running.
Tonight I changed the fuel filter - just in case that could be the problem, check again for fuel pressure and spark -- all seemed ok. It just turns over with no hint of ignition or of wanting to start.
I'd appreciate any ideas. I'm not sure if it has any codes, its OBD1 and I couldn't remember how to get the codes out this afternoon. I've made the assumption that the fuel is ok, and that the crank position sensor is working since I do get spark. I did not check all 6 of the coils (its the motorola ICM and pack) The coil pack and ICM has been replaced before and isn't that old and doesn't have the obvious signs of damage like the old one did (that burnt electronics smell and cracked case).
I've got to do something to get this out of the parking lot. Will the cam sensor prevent starting? Could the crank sensor be that erratic? Is there a way to check the ICM?