Question about 2004 Pontiac Sunfire

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ENGINE LIGHT STAYS ON WHEN RUNNING. - 2004 Pontiac Sunfire

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  • Anonymous Sep 24, 2008

    Light came on in May right before Inspection was needed. I spent over 700.00 changing plugs, gas cap, etc... Finally got it inspected and the light came on again. Mechanic changed Fuel Pressure Hose and again the light is on. Went back told me the Gas cap was loose- reset it- on again. Up to 1,000.00 in Repairs and still don't know exactly why the light is coming on? Please help- if you can.

  • Tony Hutson
    Tony Hutson May 11, 2010

    The engine light is telling you that you have what they call a "hard Code" that means that one of the sensors is getting a reading that is way out of specs.



    You should take you car to one of the local parts houses, ie Auto Zone, O'Reilly's and have them hook up their reader and tell you what the code(s) are.



    Then you can come back on and we will do what we can to assist you.

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2 Answers

I also have the same problem with the engine light staying on all the time. Was told by a mechanic friend after he reset the computer that it has something to do with the wiring on the exhaust harness getting moisture and causing a miss-reading. Nothing serious to worry about, just a pain in the ***

Posted on Nov 07, 2008

My engine is on ALL the time as well...I've taken it to a shop 3 times in the past 3 months, and it's always the same thing. The gas cap wasn't on tight enough.

Posted on Aug 20, 2008

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