Question about 2002 Lincoln LS

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My Engine check warning light is on in my 2002 LS, and after 3 cold engine starts running high octane fuel, it has not reset itself. my car runs great while in drive but has a rough idle when stopped. This occurred after my fuel tank ran really low and I only put a few gallons of fuel in to get me home. The rough idle and light happened the next morning from a cold start. I filled it with premium gasoline but see no improvement.

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  • yadayada
    yadayada May 24, 2011

    DO NOT run any fuel other than the recommended Octane, if you do you cause cold start problems. As far as the check engine light you MUST have the system tested for the fault codes that are stored in the computer when the check engine light is turned.

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  • Lincoln Master
  • 5,467 Answers

Hello, Take your car to an Autozone, Oreillys, or Advance autoparts store. Any of them will give you a free scan for the cause of the "check light". You may be able to buy the correct part to fix your car and it may be a simple matter of switching a part on a connector.

The Parts guys will be able to tell you where most of the parts go and what is needed to change them. After the new part is installed you may need to have the onboard computer cleared or you will see the old warning for some time.

If the scan shows nothing, then a fuel sample with a change of the fuel filter would be the next step I would take.

If you have any trouble Code numbers to identify, you can send them here and we will identify them for you.

Posted on May 25, 2011

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