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  1. #1
    Junior Member
    Join Date
    May 2016
    Name
    Cody Patterson
    Location
    Cailfornia
    Posts
    3

    2000 4.2 high idle, no temp gauge, rich mix

    Have a 4.2 that is idling high, sometimes starts really low then revs up to about 2500 for a few minutes. Temp gauge isn't working. Mix is really rich and sometimes I have to sink the pedal down to shut down injectors just to start it.

    Changed the cylinder head sensor and still no luck. Cleaned everything else we can think of. Can't see any vacuum leaks so far.

    Any ideas?

  2. #2
    Senior Member
    Join Date
    Feb 2013
    Name
    Ted
    Location
    MD
    Posts
    762
    IAC possibky bad.

  3. #3
    Junior Member
    Join Date
    May 2016
    Name
    Cody Patterson
    Location
    Cailfornia
    Posts
    3
    Already cleaned all out and stuff but maybe

  4. #4
    Chief Moderator Jersey_Joe's Avatar
    Join Date
    Jul 2012
    Name
    Joey
    Location
    New Jersey
    Posts
    19,016
    Hey. Welcome to the forum. Does that have a tps?

    lit up by F150leds.com & 5Star tuned....

    ----------

    Throttle position sensor.

    lit up by F150leds.com & 5Star tuned....

  5. #5
    Junior Member
    Join Date
    May 2016
    Name
    Cody Patterson
    Location
    Cailfornia
    Posts
    3
    Sure does

  6. #6
    Chief Moderator Jersey_Joe's Avatar
    Join Date
    Jul 2012
    Name
    Joey
    Location
    New Jersey
    Posts
    19,016
    I know I had an explorer that had a prob with the tps.

    lit up by F150leds.com & 5Star tuned....

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