Question about 1999 Ford Explorer

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1999 Ford OHV Exployer skips and misfire even with tune-up

My ford has new wires and plugs, but it still misfires (check engine light flashes on and off) and skips. It also use a lot of gas.

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  • geanetha May 29, 2009

    code reports something about oxygen sensor.

  • geanetha May 29, 2009

    It's a 6 cylinder engine. I will have it tested today and let you know the code. Thank you sooo much!!!!

  • Keith Heavilin
    Keith Heavilin May 11, 2010

    By the way, what engine size do you have?

  • Keith Heavilin
    Keith Heavilin May 11, 2010

    I would have guess oxygen sensors.  It should be telling you which one it actually is and that is the one that you need to change.  Oxygen sensors are vital to making sure that your car is running smoothly.  They can also help a lot on gas mileage when they are working properly.  If you have the code number I can let you know which one you need to change.  Let me know.  Thanks, Keith.

  • Keith Heavilin
    Keith Heavilin May 11, 2010

    what cel code does it have?



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Pull the exhaust off and see if it runs better, if it does it needs catylitic converters- could also have bad fuel injectors.

Posted on May 29, 2009


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