Question about 1998 Pontiac Grand Prix

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The check engine light is on and the check oil light stayed on even though the oil was just changed

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It's probably just a sensor same thing happened to mine but it was the transmission light

Posted on Dec 22, 2008

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If your engine isn't rattling, the oil pressure is probably OK; I wouldn't drive it far until you have someone with a pressure gauge check it however. This normally takes only a couple of minutes of service time. 

The oil pressure sensor/sender is one of the most unreliable devices in our cars for some reason - maybe just cheap. Your car probably also has the pressure sensor telling the computer to turn on the 'check engine' light too so if the sensor fails, you get both.
There is a remote possibility that the oil pump has failed but they are more reliable than the sensor and if you haven't noticed any change in engine noise, you are only a few bucks away from a 'no idiot lights' condition. 

Posted on Dec 12, 2008

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