Question about 2003 Ford Focus

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Anyone have a problem with their 2003 Ford Focus jerking, even while car is idling

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Maybe a bad coil. Mine did this for about a month. It would skip but not all the time. It had weak spark on one side of coil and had small cracks on the coil. You should also check the rubber hose that goes to the pcv from the intake manifold as they will collapse and leak.

Posted on Nov 09, 2010

  • 3 more comments 
  • ab581a Nov 09, 2010

    I forgot to mention, that my engine light came on now as well

  • honeymokey
    honeymokey Nov 09, 2010

    The collapsed pcv hose will turn the light on. Check hose while running, it connects from the back f the intake and goes under the ign coil to the pcv . To reset light disconect battery for about 10 minutes and drive car like granny to retrain ecm memory.

  • ab581a Nov 09, 2010

    is that the correct name for that hose, I dont see that lsited in parts for that car?

  • honeymokey
    honeymokey Nov 09, 2010

    Open hood with engine running and look for it between the firewall and the engine just below the throttle body about 10 inches. Go to a ford dealer to get a real diagram and correct name.

  • ab581a Nov 09, 2010

    Ok, Thank You

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