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93 explorer behaving badly

Discussion in 'Stock 1991 - 1994 Explorers' started by meskidog, April 14, 2013.

^^Searches ExplorerForum.com^^





  1. meskidog

    meskidog New Member

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    City, State:
    middletown ohio
    Year, Model & Trim Level:
    94 explorer
    My 93 explorer v6 is giving me headaches. Starts up great cold, but once it warms up has a serious hesitation when hit the gas, and stalls when put it in gear. Then I have to hold gas pedal all the way to floor to get it to stat again.. Not throwing any engine codes, so I'm not sure where to start
     
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  3. FLwireman

    FLwireman Member

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    City, State:
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    Year, Model & Trim Level:
    '93 Xploder
    http://easyautodiagnostics.com/ford_maf/maf_sensor_ford_1.php
    Great write up for testing and cleaning MAF. 1st thing to do is merely disconnect the MAF wiring plug so that the computer reverts to default settings. See What changes that makes. Another possibility is the idle control is dirty, but that is really just for idle problems. Best of luck.
     
  4. wood1

    wood1 Well-Known Member

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    Year, Model & Trim Level:
    '93 XLT, Cayman Green RIP
    I would also check your fuel pressure. Might be your pump or relay.
     
  5. OneofMany

    OneofMany Active Member

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    City, State:
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    Year, Model & Trim Level:
    94 expl 4x4
    It runs ok when cold because it is in closed loop, as soon as it warms up it enters open loop, but the pcm may not be getting the right readings. Most likely your MAF is sending the wrong signals and the pcm is trying to run a way too rich mixture and floods the engine. Disconnect the maf during warm up and see if it runs better as it continues to warm up to operating temp. If Yes, replace MAF.
     

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