Volvo D12 Heater not working properly

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Acj87, Jan 22, 2025.

  1. Acj87

    Acj87 Bobtail Member

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    Jan 22, 2025
    0
    Recently replaced thermostat & Heater control. Heater in cab only blowing warm to cool air Also my fan turns on randomly and stays on while temperature is at 170 unsure if that’s affecting it. Any idea ?
     
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