Question about 2005 Buick LeSabre

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Oil light comes on when starting engine or when excelerating. Started last week, checked level was fine changed oil and filter this weekend and still doing it.

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An easy one, finally.
The oil pressure sensor is one of the least reliable parts of any car and yours is bad. They are supposed to turn on the 'idiot light' at ~ 4 pounds of pressure which is almost too late for any warning since oil pressures range from ~30- ~60 pounds in most engines.
These are common failures and not costly to replace. Once you know where it is, with an appropriate wrench, it's about a 5-minute job.

Posted on Nov 15, 2010

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