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Thread: Auxiliary Fan blowing fuses

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  1. #1
    Join Date
    Jun 2006
    Location
    Bradenton, FL
    Posts
    27

    Default

    It sounds like the Balast resistor for the fan is bad, and it could possibly be the fan too. Does the fan turn easily by hand (you can reach the bottom of it under the airdam). Apparently it's common for the magnets in the blower motor to dislodge and jam it up, happened to me, and this can cause the ballast resistor to go bad, I think that's correct. The balast resistor can be purchased for anywhere from $20-up to about $40, depending on the quality that you want.

  2. #2
    Join Date
    Dec 2003
    Posts
    1,640

    Default Yup.

    Check for a jammed fan first. If not jammed then check the balast.

    Last time I saw this (friends car) it was a piece of styrofoam blocking the fan. Removed the foam and it was fixed.

    Quote Originally Posted by Reckless_Kelly
    It sounds like the Balast resistor for the fan is bad, and it could possibly be the fan too. Does the fan turn easily by hand (you can reach the bottom of it under the airdam). Apparently it's common for the magnets in the blower motor to dislodge and jam it up, happened to me, and this can cause the ballast resistor to go bad, I think that's correct. The balast resistor can be purchased for anywhere from $20-up to about $40, depending on the quality that you want.
    Bellevue WA
    90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
    86 Porsche 951 - Track Toy

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