A few months ago the blower for my HVAC system started making a VERY loud vibrating/humming sound when the Auto Climate Control was set to above 3. At the highest setting, it was almost too loud to have on. Upon searching for the issue, I realized there have been SEVERAL members with the same issue, and I'm hoping they will look at this thread for a possible solution. My mothers 1997 Chevy Lumina made the EXACT noise, so it seems to be a fairly common issue.

I opened the Air Filtration System cover and removed the filter (which I had replaced shortly before this issue arose). Inside of the blower motor there was about a 4-5 inch piece of foam that was attached to the fan blades. It was so tightly stuck on there that I almost assumed it was SUPPOSED to be there, but then I realized that didn't make much sense for a piece of foam to be stuck randomly to the middle of the fan blades. So I removed it and BINGO...HVAC is quiet again.

I doubt a huge piece of foam could have passed through the air filter, so I assume it came off of something within the unit itself. Either way, its fixed...and now I can use my heat at full blast, lol.

Good news , mine does the same thing , and last week I pulled the filter to check if anything was near motor and only felt a peice of foam that I thought belonged there and did not pull out.I guess Ill pull it out now its probably my problem.Thanks.

HAHA! See, I KNEW that other people would think that damn foam was supposed to be there, lol. GREAT NEWS! Glad I could help, let me know if this fixes it for you.

Thanks for the info on the heater blower . I new mine sounded louder than I thought it should. Took your advice & checked it out today. It had a leaf from a tree in it about the sise of a silver doller. Got it out, sounds great now. Thanks

count down for mod to say "please dont dig up old threads" and lock......




.....5, 4, 3, 2,........


*edit* 1 and 3/4, 1and a 1/2, 1, 3/4, uhhh, i cant stall for much longer here guys

Whoa, man, take it easy...

It'* only a little over a month old. I don't think it'* THAT bad in my opnion

Does anyone have a opinion as to where the foam came from?

I'd like to know this myself...no idea where it came from...? Did you have the foam problem?