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Q: How can I tell if my MAF sensor is bad? on 1990 Buick Regal

How can I tell if my MAF sensor is bad on my 1989 Buick Regal , 3.1 . Also how do I clean it?
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Start the engine and let it run, now tap on MAF sensor with a screwdriver handle, if the engine responds at all
to the tapping, REPLACE the MAF sensor!!!
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