03 Jeep Hydralic Fan

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  • Erick
    Junior Member
    • Mar 2011
    • 9

    03 Jeep Hydralic Fan

    Can any one tell me WHY there is no System Test for the Hydralic Fan on this 03 Jeep 4.7L. Shop Key and Identafix both say to use a suitable scan tool to actuate the fan solenid. HHHHMMMMMMMMMMm, not there. WHY?

    Erick
  • ratchetman
    Senior Member
    • Mar 2011
    • 107

    #2
    I would use a suitable test lead to manually power that sucker

    Comment

    • diesel71
      Senior Member
      • Feb 2008
      • 921

      #3
      eric,
      I hardly ever see gas engines but all the diesel"s have a fan speed & fan percent pid. you can look at the engine speed and compair it to the fan speed then check fan percent to see if its being commanded on. there should be some info in shopkey for the coolant temp at witch the percent should change to bring the hydrolic fan speed to match engine speed.

      Comment

      • Skip
        Super Moderator
        • Apr 2008
        • 605

        #4
        I will pass this on the Chrysler engineer.

        Comment

        • ratchetman
          Senior Member
          • Mar 2011
          • 107

          #5
          Is that a PWM controled solenoid?

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