Question about 1994 Ford Thunderbird

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Runs better with mass air flow sensor unplugged

What is going on with my car?

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  • j.r.  wilkins
    j.r. wilkins Jan 17, 2009

    runs better so there is nothing wrong with the mass air flow sensor. what could it be?

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  • Ford Master
  • 63,820 Answers

The fuel injection control computer (PCM) subsitures the Throttle Position Signal and other info from a system called FAILURE MODE STRATEGY, your MAF has failed and the computer has gone into the failure mode, this is how I quickly determine if a MAF is bad in the shop, just unplug it and if it runs better or even normal I clean or replace it, first try cleaning the inside of the MAF with CRC MAF spray cleaner, avail from Kragen, Autozone and others, about $5 a can, if that doesn't fix it go to a web site called Rockauto.com, they can bet local prices by 50% in many cases.

Posted on Jan 17, 2009

  • yadayada
    yadayada Jan 17, 2009

    is it still unplugged? not sure what u mean, if it is still unplugged and runs better than when MAF is plugged in then u need a new MAF

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