20 Most Recent 1991 Buick Regal Questions & Answers

In the air inlet duct.

Check near the fuse box and the left side under the dash. There are two flasers in a car, one for the hazards and one for the turn signals. You are on the right track for if the hazards are working the bulbs and wiring to the bulbs are eliminated. Once you replace the flasher your problem should be fixed. When checking for the flasher remember they sometimes are clipped or taped up, so feel around as well as looking.

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.

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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 combination switch is the one that will cause this, not the main light switch.

On this website you find fuse box diagram and description for Buick Regal (1988 - 1993) Buick Regal mk3 Third Generation 1988 1993 fuse box diagram Auto Genius

There is a sticker under the hood with that information on it

The emissions control valve is bad. Get a manual for your car from an auto parts store for the location and removal instructions.

Mass airflow meter needs to be cleaned.

DIRTY CENSER located in fill tank.

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You never attempt to fix a seat belt retractor, you replace the seat belt. This is due to the fact it may save your life.

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.