Question about 1990 Buick Regal

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1990 bucik regal 3.1

Was driving the car and it just stopped runnig...will turn over but no spark. We have changed the 3 ignition coils,crank sensor,oil sensor, checked all connections and fuses and still no fire....please help!!!!

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  • WalkinTom Sep 19, 2008

    Same basic problem, spark is the only thing that disappears without notice. Motor runs great otherwise. I replaced the computer plus all those other parts, one at a time, plus a few bad wires. Still works sometimes but usually quits within first 5 minutes. A great car otherwise! Speed indicator often goes crazy and is inaccurate. Could there be any connection there?

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Replace the computer,i know its expensive but,those cars are notorios for tha problem.if all those other parts didnt fix it ,thats the only other possibiltie.

Posted on Jul 27, 2008

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my name is David ,I live in Austin Texas and do alot of mecchanic / technician work around town. I do have my certifications and have work at dealerships and Autozone as well...with all that being said... if you are not getting spark on this vehicleand it is not likely the coils or the module. The crank position sensor the device responsible for reading the angle ( timing ) of the crankshaft. The crankshaft has notches in it that pass either through or near the crank position sensors magnetic tip. The ignition module then interprets the signal and allows signal ( electrical current) to pass into module and on to ignition coils...then on to spark plugs via spark plug wires/cables. The crank position sensor is located on the back side of the engine in the gap between the engine and transmission housing. it is held in place by one 8mm (metric size) or 5/16 standard size bolt. Use a wrench though unless you have small hands or a 1/4 drive socket set. 9.99 times out of ten it will start if there are no other issues... your welcome

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