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AC making strange noise

Discussion in 'Gen 2 Prius Technical Discussion' started by GasSaver1, Jul 25, 2011.

  1. GasSaver1

    GasSaver1 Member

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    2012 Prius
    Model:
    Four
    I noticed that I have an unusual "rumble" noise coming from the location of my ac blower motor when it kicks in full blast. When the air temp comes down a bit and the AC slows down or if I switch the ac off full blast under climate control, the noise goes away. I have never noticed this before and am wondering if it is my ac blower motor starting to fail.

    The noise is hard to explain. It is a rumble- or mechanical drowning. I think all I typically heard (while the engine was off) was the sound of the air coming through the vents.

    As I am in Florida, the ac is always on and if it is the blower motor, I am wondering if the constant activity has caused it to fail early.
     
    #1 GasSaver1, Jul 25, 2011
  2. 2009Prius

    2009Prius A Wimpy DIYer

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    There were posts about the cabin air blower failure due to wear or dirt build up. I would at least check the cabin air filter first. Good luck!
     
    #2 2009Prius, Jul 26, 2011
  3. GasSaver1

    GasSaver1 Member

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    Four
    brand new filter
     
    #3 GasSaver1, Jul 26, 2011
  4. Patrick Wong

    Patrick Wong DIY Enthusiast

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    It is certainly possible that a fan motor bearing is allowing the shaft to wobble at high speed.
     
    #4 Patrick Wong, Jul 26, 2011
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