Top 20
1991 Buick Regal Questions & Answers
I have a brand new mass air flow sensor on a 1991
Hello, When looking down at mass air flow you will see A, B, and C also the release on the connector will be at the opposite or bottom of the MAF sensor when reading A, B, and C. OK! Lets start with easy part first, C, pink with black stripe is 12 volts. B, the red with black stripe is ground. A, the yellow with a white stripe is reference voltage sent to ECM to manage fuel trim. Please note this is correct for all GM, PONTIAC, OLDSMOBILE, CHEVRELET, and CADILLAC.
1991 Buick regal OBD code 23
I wonder if the sensor from the junk yard is also bad. Check all of the wiring and connections. You might have to opt for a new sensor.
The AC keeps cutting in and out?
New compressor? Was it filled enough? High pressure switch could be on it's way out. Especially if it did it before the compressor change. The relay could also be going out. Swap it with another.
Oil light comes on
oil level is low, (add oil) or your oil level sensor is faulty or the connector has came off.
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