20 Most Recent 1991 Buick Regal Questions & Answers


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.

1991 Buick Regal | Answered on May 05, 2019


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 | Answered on Feb 21, 2018


Greetings, I read your question and I think Reliable-Store can help you in this. Here's the site link.
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1991 Buick Regal | Answered on Dec 02, 2017


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.

1991 Buick Regal | Answered on Oct 13, 2017


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

1991 Buick Regal | Answered on Jun 16, 2017


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

1991 Buick Regal | Answered on Apr 10, 2017


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

1991 Buick Regal | Answered on Nov 22, 2016


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

1991 Buick Regal | Answered on Nov 22, 2016


Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
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1991 Buick Regal | Answered on Jul 01, 2016


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.

1991 Buick Regal | Answered on Jun 23, 2016


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.

1991 Buick Regal | Answered on Aug 05, 2015


you have either a clogged fuel filter or a bad fuel pump,try the fuel filter first its chaeaper and easier than the fuel pump and you should replace it every 5 years on most cars anyway.

1991 Buick Regal | Answered on Mar 29, 2015


how many wires are it the positive clamp at the battery seems like it should be 3 .one being the fusablelink

1991 Buick Regal | Answered on Jan 27, 2015

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