AC / Heater Fan Keeps Blowing Fuse

Discussion in 'Technical' started by rthomas771, Nov 16, 2014.

  1. injectedmav

    injectedmav Member

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    I will see if I can get a pic for you. It's been a few years but if you are using the stock AC system, it's a worthwhile mod.

    It's a 2001 Taurus motor FYI if you get one from a salvage yard. Get the resistor and connectors and as much wiring as you can. The motor is mounted in a plastic housing that you can remove the torx retaining screw to separate the motor from the housing.

    I believe I used a section of exhaust tubing that I split and welded flanges that clamps the motor so I could mount to the same studs in the housing as the OEM motor. I had to clearance the housing to fit the bigger squirrel cage from the Taurus but it was a relatively minor amount and I used the Taurus resistor as well. I only use 3 speeds so I can retain the Maverick switch. I also recommend running a relay to bypass the switch for high speed.

    As of now I have to work on Dec 6, but if I can make it you're welcome to take a look at it.
     
    Last edited: Nov 26, 2014
  2. 71gold

    71gold Frank Cooper Supporting Member

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    thanks...this sounds like something others may be interested in...:Handshake:
    sorry Jeff for taking your thread a little sideways...
     
  3. Krazy Comet

    Krazy Comet Tom

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    With the new motor from Vintage Air the only mod necessary should be the relay...
     
  4. injectedmav

    injectedmav Member

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    Very true. I did this mod sometime around 2004-05 when the replacement motor I bought developed the same bushing squeak after one season.

    Back to the original problem, if the motor isn't mechanically binding, the brushes and commutator in the motor may be burned. I have seen some issues lately with cooling fan and HVAC fan motors with excessive brush wear and /or material transfer causing the circuit to open. (some newer controllers are able to turn off the circuit when current is too high)
     
    Last edited: Nov 27, 2014
  5. BrewDaddyDave

    BrewDaddyDave Member

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    I'm having the same issue. I hear a loud "chirp/squeak" when I turn the A/C to high and no air blows out. Sometimes it will blow others it won't. Now my fuses keep popping. The owner before me put in an aftermarket radio. Would I begin troubleshooting the fuse panel to make sure it's not heating up?
     
  6. rthomas771

    rthomas771 Member

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    I forgot all about this thread. My problem was a loose blower motor ground wire. The ground screw fell out from under the dash but the wire was leaning against metal.
     
  7. Krazy Comet

    Krazy Comet Tom

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    Noise in blower then popping fuse is a motor or blower wheel related issue...
     

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