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  1. #1
    Light Load Member
    Member Since
    Jan 2009
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    Central North Carolina
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    3406E cooling fan relay

    I'm hoping someone here can help me. I have a '97 Volvo WIA with Cat 3406E and the cooling fan quit kicking in; but works with the A/C. i need to find the cooling fan relay on this truck. Would it be mounted on the engine,or the firewall, or under the dash with other relays? Any help you can give to help shorten my search sure would be appreciated.


  2. #2
    Medium Load Member TURKER's Avatar
    Member Since
    Aug 2009
    Location
    Raleigh NC
    Trucker?
    6 Years
    Age
    57
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    I had a pete 379 with same engine ,Relay was on the fire wall next to city horn. You can fallow the air line from fan clutch to Relay it has two wire and air line hooked to it.

  3. #3
    Medium Load Member
    Member Since
    Feb 2010
    Location
    Tn.
    Trucker?
    42 Years
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    Check the temperature switch in the head although most will be normaly open and would come on full time when signal is lost, the signal from the a/c comes from the trianary or bianary switch or high pressure switch.

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