Loud noise when ac or heater is turned on.

2005 MAZDA MPV
81,000 MILES
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RADAMES
  • MEMBER
  • 1 POST
Once I turn on the air conditioner or heater in minivan a loud noise comes on and it sounds like the fan. It happens every time its turned on.
Dec 28, 2011 at 2:54 AM
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FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
you may have a bad fan/blower.
Dec 28, 2011 at 5:54 AM
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RIVERMIKERAT
  • ✓ASE Certified Mechanic
  • 6,110 POSTS
  • ASE Certified Mechanic
It's probably either dust or grit in the fan motor bearing or something caught between the fan cage and the housing. The fan motor and cage can be removed from the air box and cleaned. There are going to be something like between 4 and 6 screws.
Dec 28, 2011 at 5:56 AM
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