Fast Blinking Check Engine Light
02-06-2007, 09:59 PM
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Fast Blinking Check Engine Light
I changed the computer in my 1991 Firebird today and everything runs but, I now have a fast blinking check engine light. How do I fix this problem? Do I have to get a code reader to reset? Help!!!
02-06-2007, 11:18 PM
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Car: 84 z28
Engine: 383 stroker
Transmission: th-350
Axle/Gears: 3:42
that's means a major failure, could be misfire, emissions. You're car would need to be scanned with a scan tool and then fix the problem. It's probably operating in safe mode now to reduce any major engine damage.
02-08-2007, 02:13 AM
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The fast blinking light also can indicate a improperly seated prom. I would disconnect the battery, unplug and re-plug all the ecm connectors and check to make sure the prom is seated properly.
02-08-2007, 12:12 PM
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Car: 84 z28
Engine: 383 stroker
Transmission: th-350
Axle/Gears: 3:42
i don't know how but i missed the part about changing computers, the major failure doesn't seem to be it. Probably your connections.
gotta love electronics
gotta love electronics
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