Fan staying on

Oct 10, 2020 - 12:33 PM

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  • can anyone help me here I have a 2008 Freightliner with a Deec6 Detroit and the fan is staying on. The solenoid checks OK there is voltage there with the key on until the truck is started the the ground disappears and the fan comes on. AC is off manual switch is off.
    There are no codes present

    This post was edited Oct 10, 2020 12:39PM
  • Hi Ronald, Are you able to look at the fan request parameters? Is the engine fan commanded on or off? Are you able to look at the AC request parameters? What is your High side pressure reading?