Question about 1994 Pontiac Grand Prix

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Why does my check engine light keep coming on? my mechanic says there's no issue and i'm sick of looking at it.

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  • Pontiac Master
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Go to another mechanic. The light comes on when somthing is detected. You pull the error codes from the computer and persue that indication.

Posted on Jan 02, 2011

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  • Master
  • 370 Answers

A lot of time, carbon from your exhaust will block the O2 sensor. This sensor is located in the exhaust line. You can change the sensor, and have the light go away for a couple of weeks. I had Lincoln Town Car that had the same problem. The mechanic said nothing was wrong, paid to have it changed anyway, 2 weeks later, same thing. Unless you disconnect the check light, it will stay on. I would just ignore it, or put a piece of dark tape over it. Hope this helps

Posted on Jan 02, 2011

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