Question about 2001 Ford F150 Styleside SuperCrew

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2001 Ford F150 91,000 miles v8 5.4 triton at around 50 mph the truck will start jerking, is it the engine, transmission ?

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  • Jonathan S
    Jonathan S Jul 11, 2010

    Is there a check engine light on? This ounds as if it could be a exhaust restriction or an engine misfire.

  • vandersteene Jul 11, 2010

    Yes, the code was p0125 clsd loop fuel ctrl insufficient coolant temp. This code came up after a 4.5 hr trip in Febuary 2010. The engine was running fine and so i dismissed it and now im having this problem discussed in my first e-mail.Im not having any other problems and there hasnt been anymore check engine lights since Feburary. Any speed below 45mph or any speed above 55mph I have no problems. Thank you

  • Jonathan S
    Jonathan S Jul 12, 2010

    At this point I would double too check see if any additional codes have been stored.They may not have triggered the light yet but will eventually. Would you say the truck feels like is bucking and how severe is it? The jerking sounds like a engine misfire but would definitely check for any transmission or possible engine codes

  • Todd Jones
    Todd Jones May 29, 2014

    did you ever find the problem.

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You most likely have a bad spark plug coil and or plug. First recomendation go to your local parts store and have them put a code reader on it. It should tell you what cylinder is missfiring under load. Once you identify replace the coil. Cost $45-$60. Also replace the plug. After this you should be back in business. This is common with the 5.4L engine. Depending on the cylinder involved the coil can be difficult to get to so take your time. Definently and easy do it yourself repair.

Posted on Sep 24, 2010

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My '01 does the same. I was told to do a pressure test on the converter, and check the PCV hose on the back of the intake. Doing it this weekend, will let you know if it helps.

Posted on Jul 23, 2010

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