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summitlaydown

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Everything posted by summitlaydown

  1. so it could be one or more of those sensors not functioning properly or a malfunctioning ecm?
  2. hey i have a problem with a 98 ch600 the air clutch for the cooling fan wont disengage i can provide a gound to the air switch on the drivers side of the radiator and it will turn off but the truck wont do it on its own i suspected a temp switch but talked to a mack dealer and they told me it was controled by a computer based on the values of multiple sensors is this true or is there just one switch?
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