91 Buick Park Avenue

Asked by Nov 16, 2016 at 01:36 PM about the 1991 Buick Park Avenue 4 Dr STD Sedan

Question type: Maintenance & Repair

Car stopped running check fire on coil pack
and plug nothing thinking crankshaft sensor
might be no good replacing coil pack as we
speak now

2 Answers

850

it is often not the coil pack but the control board under the coil pack. It could be the crank sensor...if it is bad the car will not start. If you could get a code reader you could narrow down the problem.

My 1990 P/A had the same symptoms. I replaced the module, the coil packs, and the crank sensor 3 times due to the codes popping up. I finally sent it to a shop and it got plugged in to a Snapon scanner and when he got it running it said the alternator was over charging at 17 volts, but when he checked with a volt meter it read 14.5 volts. He recommended changing ECM under the dash. I did and that fixed it. The trouble codes aren't always reliable on these cars.

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