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My car shuts off while driving
1999 Buick LeSabre

My car shuts off while driving

(1999 Buick LeSabre)
i can be going 10 or 60 or even at a light and it will shut of and i have changed the starter and alternator and battery and gave it a complete tune up and still the same problem ps i also changed gas from 87 to 93
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Popular Answer
on January 11, 2011
This is most likely an engine sensor that is defective, not a tune up or octane issue. If you ever get a yellow 'service engine soon' or 'check engine light' on, that will be a huge help, because there will be a code set that will really help in determining what the problem is. Even if you don't have a light coming on, there still may be a code. If the car idles fine but just suddenly shuts off, I would suspect the crank shaft sensor, or at least inspect it.
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General Diagnosis
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on January 11, 2011
This is most likely an engine sensor that is defective, not a tune up or octane issue. If you ever get a yellow 'service engine soon' or 'check engine light' on, that will be a huge help, because there will be a code set that will really help in determining what the problem is. Even if you don't have a light coming on, there still may be a code. If the car idles fine but just suddenly shuts off, I would suspect the crank shaft sensor, or at least inspect it.
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