Question about 1992 Buick LeSabre
If the pressure is low it will turn the light on. If you have a light and hear knocking it's a sign that a rod or main bearing has worn to the point that it's allowing oil to escape from the crank, thereby lowering pressure to all other components. There is no "fix" for that short of a bearing replacement,
Expensive, and most times not worthwhile as debris from the bearing gets into the oiling passages and causes more problems shortly after the repair. Best option is a scrapyard engine or total rebuild.
Posted on May 27, 2011
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Posted on Jan 02, 2017
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