Fans running immediately

Discussion in 'General Motoring' started by K-town, Oct 21, 2004.

  1. K-town

    K-town Guest

    On my wife's 1986 Acura Legend, the cooling fan AND condenser fan switch on
    the instant I turn the key to the ON position. (Position II) Of course,
    this is BEFORE I actually start it. Upon starting the engine, the fans
    continue to run. BTW, the engine is COLD at this point. If it were still
    hot, I wouldn't be posting this question. ;-) Is this happening due to a
    bad relay in the fans? Or could it be a bad temperature sensor? Anything
    else possible? Also, I had to pull the fuse for the condenser fan, as it is
    making a horrible, loud racket. Sounds like something inside the fan's
    motor is rubbing, or needs lubrication. Is this possible, or does the fan
    just need to be replaced?

    If anyone can answer these 2 questions, I would really appreciate it. :)

    Thanx in advance!

    Jonathan

    P.S. I told my wife NOT to use the A/C while the fuse for the condenser fan
    is out. The radiator fan's fuse is still in place, and functioning,
    although even upon cold starting, as I said above...

    P.P.S. All interior controls are OFF at time of start. A/C button is NOT
    pressed, inside vent fan is switched OFF, etc.
     
    K-town, Oct 21, 2004
    #1
  2. K-town

    Randolph Guest

    I know that the Accord from that time period had the condenser fan and
    the radiator fan connected in parallel, so they would either both be on
    or both be off. If this is the case with your Legend, it could be as
    simple as the thermo switch having failed closed. To test this theory,
    unplug the connector from the thermo switch and turn on your ignition.
    If the fans don't run, you have diagnosed a bad thermo switch. I believe
    that vintage Accord had the thermo switch mounted at the bottom of the
    radiator, don't know about the Legend. It would be the only electric
    piece attached to the radiator, and it has two wires going to it.
     
    Randolph, Oct 21, 2004
    #2
  3. K-town

    K-town Guest

    Thanks, I have a Haynes manual for the Legend, so I'll find it. Do you (or
    anyone else) know about about what's causing the condenser fan to make that
    loud racket? It's like a groaning / roaring type sound...?

    Jonathan
     
    K-town, Oct 22, 2004
    #3
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