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4x4 and heater operation

Discussion in 'Ford Trucks' started by fireballf250for, Dec 20, 2008.

  1. fireballf250for

    fireballf250for Junior Member
    from T.N.
    Messages: 1

    I am haveing a time with my 4wheel dr and heater I have changed out the ac/heater control and the pump is ok i am down to the solenoid next to the vac.pump have unhooked it and oluged the vac. line off and It seems to take care of the problum. can I leve the plug in it so the heater works till i can get some where to buy one?
    2000 f-250sd 4x4 7.3 d thank you fellas:dizzy:
  2. DCSpecial

    DCSpecial Senior Member
    from IL
    Messages: 408

    Heat only coming out the defrost?

    If so, you have a vacuum leak, could be the vacuum line going to either steering knuckle if you have the Electronic Shift on the Fly 4x4.
  3. hydro_37

    hydro_37 PlowSite Veteran
    from iowa
    Messages: 3,790

    Definately a vacuum leak. The hubs will not lock and the heat will default to defrost.