Mechanics

CAR MAY START BUT WON'T STAY RUNNING.

1990 Oldsmobile 88

Engine Performance problem
1990 Oldsmobile 88 6 cyl Front Wheel Drive Automatic 134000 miles

If I can get it started, it idles extremely rough and will only remain running if I'm peddling it. Changed coil and coil module to no avail. It does appear to be getting spark and fuel. Any ideas?
AD
Avatar
Banysdad
June 4, 2010.




Clean out the idle air control valve, EGR and PCV valves and see what happens

Rasmataz
Jun 4, 2010.
No luck when cleaning out those parts. Thought about potentially the timing chain but see spring movement in heads when turning over the motor. What about the crankshaft position sensor? Would that cause it not to start? Do you have to remove the vibration damper to get to the crank position sensor?
AD

Tiny
Banysdad
Jun 12, 2010.

AD