A/C Fan -- (Annoying Whistling Noise)

EatTheGlass · May 19, 2009

Please help, anyone...

I get this intermittent whistling noise coming out of my A/C fan, located under the dash on the right side.

I attempted to take it to the dealer, they wanted $105 just to look at, I left.

So, I took a look myself, I found it fairly easy to take it apart and look at it. Once it was taken out, I blew it out hoping that would do something...nothing looked odd. But, it's still there. Does anyone have any experience with this or suggestion on what I can do to resolve the issue?

Any help is appreciated, thanks.

techgeekwill · May 19, 2009

It's likely the bearings in the fan blade. I'm no expert, but they may need lubricating. Don't go by my advice though. Are you out of warranty?

Ghost96Romeo · May 19, 2009

My guess it's this....
http://www.tacomaworld.com/forum/technical-chat/16437-cabin-air-filter-causing-weird-noise.html

A lot of us have had problems with this issue. Tell the dealer to let the ac run until they hear the noise.

Ghost96Romeo · May 19, 2009

Here's what I was looking for....

Ghost96Romeo said: ↑

I've found the reason for the ticking sound. My dealer kept saying "normal" and "there are leaves in the fan". I kept telling them otherwise until I got pissed enough to just take apart the blower fan and see where EXACTLY the sound was coming from. The sound is coming from the metal faceplace which covers the wire spool around the spindle of the fan. the faceplace must be balanced properly because it holds in place the spindle which is rotating for the fan to blow. when the faceplace is off balance by one of two screws that holds it in place, the fan ticks like a MF'er....as you balance the plate, the tick goes away and is as quiet as a mouse.

#1 I took my glove box completely off making sure to release the springy thing first on the right side towards the passenger door and then just popped her out.

#2 I then got out my trusty ratchet with a 5.5mm socket and removed 3 screws on the underside of the blower....the fan will slide out easily. leave the wires attached (be careful as the fan is still runnin' lectric)

#3 let down the door that holds the cabin filter in and remove filter. now you can reach up in there and see if any of those mysterious leaves are present. blow it out with your air compressor or just root your hand around in there to get anything out.

#4 hold the black plastic fan housing in your hand carefully and reach over and turn your a/c on the low setting (BE CAREFUL as that thing is quick to get away from you and can take a nub off pretty quickly) make sure you can hear the sound coming from the assembly in your hand. If so, move to step #5.

#5 remove the covering with a phillips screwdriver (4 screws - i think) and remove that cover to reveal a silver metal cover with TWO (2) lubed screws. THESE ARE THE SCREWS THAT MUST BE BALANCED. Take a pair of vice grips and grab the black housing with them so you can get your hands away from the moving fan and so you can hold it steady. then use your phillips screwdriver on one of the two screws and notice how you can make the sound/tick worse as you tighten one of the screws.....too tight and the fan slows down and/or TICKS, too loose and the fan slows down....(spindle getting in a bind).

There is a point where the fan will turn fastest and the sound will disappear magically. You'll see what I'm talking about once you're in there adjusting the screws to find that perfect point.

#6 re-assemble and enjoy!

I hope this helps a few people that have this ANNOYING sound!

sometimes it just takes getting pissed off.....damn delphi.

Why didn't they have metal stoppers under those screws or not have the spindle held still by a moveable plate......argh....

I think that over time, those screws are backing out at different rates, which makes the spindle bind up and/or ticking sound occur......
__________________
Click to expand...

EatTheGlass · May 19, 2009

You guys rock...thanks!

Patrick · May 19, 2009

yeah i had the same porblem in the winter i would tap the dash pretty good and now its spring the sound is gone.

w8n4mud · May 20, 2009

I know what I'm doing this weekend. That's what the radio is for... Turn it up!

Tater1727 · Jul 8, 2021

EatTheGlass[OP] initial post: ↑

Please help, anyone...

I get this intermittent whistling noise coming out of my A/C fan, located under the dash on the right side.

I attempted to take it to the dealer, they wanted $105 just to look at, I left.

So, I took a look myself, I found it fairly easy to take it apart and look at it. Once it was taken out, I blew it out hoping that would do something...nothing looked odd. But, it's still there. Does anyone have any experience with this or suggestion on what I can do to resolve the issue?

Any help is appreciated, thanks.
Click to expand...

I'm not sure why people are bringing up clicking noises when you say a whistle sound. I have a brand new 21 Sr with 300 miles on it and I notice it when my A/C is on. It happens twice in a 7 minute drive. It lasts about 3 seconds at the most then goes away. Found a solution yet?

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A/C Fan -- (Annoying Whistling Noise)

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EatTheGlass [OP] Member

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EatTheGlass [OP] Member

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A/C Fan -- (Annoying Whistling Noise)

#1 EatTheGlass [OP] Member

#2 techgeekwill Well-Known Member

#3 Ghost96Romeo What is the Search Tab for????

#4 Ghost96Romeo What is the Search Tab for????

#5 EatTheGlass [OP] Member

#6 Patrick Well-Known Member

#7 w8n4mud I'm back.

#8 Tater1727 Active Member

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#1
EatTheGlass [OP] Member

#2
techgeekwill Well-Known Member

#3
Ghost96Romeo What is the Search Tab for????

#4
Ghost96Romeo What is the Search Tab for????

#5
EatTheGlass [OP] Member

#6
Patrick Well-Known Member

#7
w8n4mud I'm back.

#8
Tater1727 Active Member

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