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2004 Ford Explorer XLS sporadic misfire on all cylinders

Discussion in 'Stock 2002 - 2005 Explorers' started by Kentucky Reign, March 28, 2013.

^^Searches ExplorerForum.com^^
  1. Kentucky Reign

    Kentucky Reign New Member

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    City, State:
    Glendale, Ky
    Year, Model & Trim Level:
    2004 Ford Explorer
    Please someone help! It only does this at Idle. My mechanic has checked/changed fuel trim, plugs, coil pack, wires, timing chain, fuel pressure, fuel filter, etc..the basic stuff you would think of. I took it to the dealer today and had the PCM flashed with the latest software as he thought that may help. It didnt. There are no codes, I've only noticed because I'm in the car 7 hrs a day driving and noticed it shaking more than usual at red lights. I'm thinkiing maybe the PCM may be going but I'd like some other opinions. It was replaced 8 years ago right after it was bought. I have no other idea what it may be. Crankshaft sensor? Cam Sensor? This particular model doesn't have an IAC. I dont know but I am stumped
     
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  3. pet575

    pet575 Active Member

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    City, State:
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    Year, Model & Trim Level:
    2004 Limited
    Might be as simple as a vacuum leak before you go getting into timing chains, cam/crankshaft sensors, etc. Have you had someone check it out by spraying water or brake fluid on the vacuum lines with it running to see if that changes anything?
     
  4. rmcknight

    rmcknight Active Member

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    City, State:
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    Year, Model & Trim Level:
    2004 4.6 SOHC v8 Explorer
    Last edited: March 29, 2013






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