Question about 2006 Ford Explorer Sport Trac

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06' Ford Explorer engine light wont go off after repair

A week ago my check engine light came on in my 2006 Explorer, (50 miles previously I had just had an oil change, all fluids done, air filter replaced etc..). When the mechanic ran the diagnostic, it came back with the code of the Mass Flow sensor was failing. I replaced the sensor and the engine light went off for 3 days and then came back on. When the mechanic ran the diagnositic again, he showed me that no codes were coming back- no faults. So why is it still on if no fault codes are being produced???

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  • winters_midn Jan 07, 2009

    Sorry yes the mass air flow sensor, showed it was failing and so I replaced it. The engine light went off for 3 days, then came back on. After another diagnositic today, no codes were showing on the test yet the light remains on. The mechanic said something about needing to be recalibrated? And he needed to download software for it? Does that sound correct??

  • winters_midn Jan 07, 2009

    Thank you for your time and expertise, it is greatly appreciated. I wish I had known sooner about being able to clean the part before paying $250. to replace it. Again thank you!

  • Phillip Ridener
    Phillip Ridener May 11, 2010

    If the check engine light is coming on, it has to be setting a code. Did you mean mass air flow sensor?



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Yes, that sounds correct to be calibrated.and probably is what is causing your problem. Mass air flow sensors hardly ever go bad. They get dirty and set a code. Garages will try to sell you one when you can clean it with a throttle body cleaner. If you have your old one, clean it and put it back on, try it to see if it works better.

Posted on Jan 07, 2009

  • Phillip Ridener
    Phillip Ridener Jan 08, 2009

    Don't use throttle body cleaner, sorry, use an electronics cleaner without residue, such as a Radio Shack brand.



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