Buick Repair Questions? Ask a Mechanic for Answers ASAP
Do you have the ability to retrieve the code from the ECM? Autozone will check the code for free in most places.
Is this car dying on you when accelerating or is the issue only happening when your foot is off the gas?
Do you have access to a fuel pressure tester?
Ok, so the next step would be to check the signal from the Crankshaft Position Sensor (CPS), if you have no signal or intermittent signal, the terminals on the vehicle side of the connector are bad for developing corrosion causing intermittent crank signal. If corrosion is observed in the connector then clean with an approved electrical connection cleaner, reconnect, and test drive to see if the issue has resolved. If you have intermittent signal from the CPS but the connector looks clean and intact most likely the CPS is beginning to fail and should be replaced.
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