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A/C blower noise..... what the ????


fredster

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2003 STS with only 25K miles (love this car -- I've got a black on black, wife has a white diamond)

Anyway, noise from blower. Removed blower and found a piece of foam inside, but also see two metal clips on the fins. :huh: What are these? Some kind of balancing pins?

See photo. Note there are two clips, almost exactly opposite from one another, and that one is towards the motor and one away from the motor. Also, is it common to get some foam in the blower like this? Where did it come from???

by the way, I've got a 2-year subscription to alldata for this car. If anyone would like for me to look something up for them, just shoot me a message and I would be more than happy to.

Fred

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yes I believe that is how they balance the fan. The foam is inside the housing, its sound deadening, so that the engine noise does not radiate through your AC vents, some probably came loose. Its seems that not only does NASA have problems attaching foam GM has problems also...I have foam blow through my vents once in a while, one day it will hit me in the eye and I will wrap myself around a tree :lol:

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Well, I guess balancing would be the only purpose I could see for those clips.

As far as the foam, I removed the intruder piece, cleaned all the fins (probably not accomplishing anything but making me feel better) and put the blower back in. And of course, the noise was gone.

Thankfully, this blower was a breeze to pull out and reinstall.

Thanks,

Fred

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Paul, yea I've heard of that happening too. Looks like this was just a piece that fell off -- no help from mice, thank goodness!

It's a shame, but it looks like bodybyfisher was right when he said neither NASA nor GM knows how to install foam. I had a '96 STS and a '97 STS, and every once in a while, a small piece of foam would shoot out of the vents.

Fred

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