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Heater noise

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Old Feb 15, 2012 | 08:36 PM
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Default Heater noise

I have a noise occurring when the heater is running. It is a humming noise that actually sounds like it is coming from behind the seats, but that makes no sense to me.
The noise is not random, but sort of a continuous rhythm. It stops immediately when I turn off the Heater.
Suggested fix is appreciated.

Last edited by gaphono; Feb 15, 2012 at 09:39 PM.
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Old Feb 15, 2012 | 09:11 PM
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When the blower fan/motor starts making noise, most of the time it's heard coming from under the dash, where it's obviously located. But, maybe in your case you're getting sound transferred down/through the console, maybe? I don't know. If you can isolate it to be definitely the blower fan/motor it does seem to be one of the few simple replacements on the car.

Anyway just for info, from member HOXXOH:

Pop out two fasteners from the panel under the glovebox. Unplug the electrical connector. Remove 3 screws from the fan assy. and you're done.
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Old Feb 15, 2012 | 09:31 PM
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Originally Posted by RicK T
When the blower fan/motor starts making noise, most of the time it's heard coming from under the dash, where it's obviously located. But, maybe in your case you're getting sound transferred down/through the console, maybe? I don't know. If you can isolate it to be definitely the blower fan/motor it does seem to be one of the few simple replacements on the car.

Anyway just for info, from member HOXXOH:
Great suggestion, but the noise does not occur with the AC so it would seem that the noise would be present with both, don't you agree?
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Old Feb 15, 2012 | 09:37 PM
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Yes I do but I thought that's what you were saying, so I misunderstood the original post.

I guess you have some detective work to do to isolate the source. Please let us know what you find.
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Old Feb 15, 2012 | 11:12 PM
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I had the extra pleasurable experience of pulling a family dead baby mice from the heater fan of my 6 month old Grand Sport last winter. They made the fan out of balance and it made a resonant humming noise inside the car. Pull the cabin air filter out and was able to see inside the heater fan with a mirror and/or boroscope. Sucked the dead tiny mice out with a a piece of 3/8 vacuum hose taped onto a shop vac.
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Old Feb 16, 2012 | 03:59 PM
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I checked no Mice. Yuk
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Old Feb 17, 2012 | 10:22 AM
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any other ideas?
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