Question about 2004 Ford F250

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I have a 2004 ford f250 that the blower motor isnt working. Checked fuses and relay ok. No power at connector on blower motor, hooked up jumper wire to circuit and now works fine

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  • Ford Master
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You have a bad blower motor resistor ! It's near the blower motor ! has four wire connector to it ! The orange an black wire at the blower motor comes from the resistor !

Blower Motor Resistor 1AHBR00036

Posted on Apr 04, 2015

  • Rob Myers
    Rob Myers Apr 07, 2015

    Wouldnt it work on high speed if the blower motor resistor is bad since it bypasses it to run the motor on high?

  • Jeff Armer Apr 07, 2015

    Just looked a little closer at wiring diagram , yes it does bypass resistor on high !Check ground connector at the switch , power comes from fuse to relay to blower motor through resistor except high but all speeds ground through the switch ! .Pull the switch assembaly. , three connectors check black wire at each for continuity with ground .

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  • Ford Master
  • 2,428 Answers

It sounds like you just had a bad connection to the motor or resistors
I have seen this question hundreds of time before on all kinds of vehicles .
The connectors tend to corrode so clean them .my ford ranger is 30 years old and just had to do the motor because the bearings were so worn the cage was scraping the houseing but it still spun

Posted on Apr 07, 2015

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