DD15 fan clutch not coming on when engine gets hot

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Bpat, Apr 9, 2016.

  1. chowblower

    chowblower Bobtail Member

    13
    8
    Nov 18, 2023
    0
    I found that I had oil leaking from the oil thermostat screw plug. It was leaking on the computer harness that’s on the engine block. Ever since I fixed that leak my fan has been working. So I can’t say for sure but check to make sure you don’t have anything leaking on that harness going to the computer. It was leaking pretty good. Oil was all over in that area so that might’ve been my problem
     
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