Question about 1993 Pontiac Firebird
In the last months, while driving the engine in my 1993 Firebird has quit 3 or 4 times. Each time, I have tried to restart it, the warning light pops on, it runs for a couple of seconds and then stops again. Two times, after waiting 10 minutes or so, the car restarted enough to drive home. It happens while idling at a stop sign or a light, and there are no real signs of warnings I could hear or feel before hand. What could be the problem?
The lt1 has many sensors that can go bad. When the optispark goes bad the car does not idle regular. When the car shuts off at a light or with the ac on it can be the idle air control (IAC). When the car shuts off when your foot is on the pedal or regular driving it can be the ignition control module (ICM).
Posted on Mar 29, 2010
I have this problem with my 93 Firebird. Seems it blows the ignition fuse (in the fusebox, left hand side of the dash, open the door and you will see it). Usually happens when the air conditioner is running. Have not found out why, but mine does it with no warning beforehand. I just carry 15 amp fuses and change it when it happens.
Posted on Jan 28, 2010
Your car has a bad optispark. You'll need to replace the unit. My 93 did the exact samer thing. It ran like a champ when it was cold, but the second it warmed up it died. THe one thing you can try is to let it just run, this will build up heat in the optispark unit and help to dry up the moisture that has built up inside it. It may help for the short term, however the problem is that by the time this actually starts happening the unit is already finished. THe other thing I noticed with mine was it was especially bad after a rain fall.....Hope this helps.
Posted on May 01, 2009
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