Question about 1990 Pontiac Firebird
I believe this is a dis system.
it sounds like you have a bad crankshaft position sensor, the crank sensor is used by the pcm for fuel injector timing.
on this motor it is mounted behind the harmonic balancer, be carefull when removing the balancer because there thin metal plates indexed into the back of it, these plates are what initiate the crank shaft signal to the pcm.
Posted on Jun 14, 2009
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Posted on Jan 02, 2017
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