A/C Vent Noise - Toyota Yaris Forums

Corykins · 03-16-2010, 11:36 PM

When my A/C is on, it sounds like something is fluttering in the duct. It doesn't appear to be blocked or anything, but the sound is pretty consistent.

Common issue?

CTScott · 03-16-2010, 11:56 PM

Drop your passenger side glove box and see if something got sucked into the blower (which is right behind the glove box).

Corykins · 03-17-2010, 12:40 AM

Thanks for the tip. I went ahead and pulled the glove box out, unfortunately I can't seem to find anything that might be causing the problem. It sounds like it's coming from the central vent, luckily I'm still under warranty. Looks like I'll be taking a trip to the dealership, unless you have any other suggestions?

CTScott · 03-17-2010, 09:47 AM

Quote:

Originally Posted by Corykins

Thanks for the tip. I went ahead and pulled the glove box out, unfortunately I can't seem to find anything that might be causing the problem. It sounds like it's coming from the central vent, luckily I'm still under warranty. Looks like I'll be taking a trip to the dealership, unless you have any other suggestions?

Shine a flashlight into the central vents and see if you can see anything rattling there. The duct goes in about a foot before making a sharp downward turn. Access beyond that requires removing the top of the dashboard.

sex · 03-17-2010, 11:15 AM

Is it only when you press the A/C button or when you turn the fan speed up for any blower position? Does it happen in recirculate or open or both? How about parked vs local vs hwy?

Corykins · 03-17-2010, 11:54 AM

Quote:

Originally Posted by sex

Is it only when you press the A/C button or when you turn the fan speed up for any blower position? Does it happen in recirculate or open or both? How about parked vs local vs hwy?

It seems to be apparent only on speeds 3 and 4 which leads me to believe it is in fact something stuck in there. Airflow setting and where I'm driving don't seem to have much of an effect.

swidd · 03-17-2010, 01:28 PM

You can quite easily (as in, without cutting your fingers) unscrew the bottom of the blower motor housing, and take a look the fan. I put some WD-40 in there, and it made no difference whatsoever to the sound from the motor itself.

eht13 · 03-17-2010, 03:38 PM

FWIW, mine made a similar sound for a couple of days... and then just when I was starting to get annoyed and about to take it in, it went away by itself. That was a few months ago. I've had similar situations in other cars too, where it seems like the cause of the sound gets "worked through" and then is gone.

OtownYaris · 03-18-2010, 12:37 AM

I had the same issue until about a minute ago. I just pulled down the glove box and found a pine needle in my blower fan. Problem solved.

Corykins · 03-18-2010, 09:30 PM

Found it! A thin piece of plastic from a cigarette pack wrapper was the culprit! I'm SO glad I don't have to go to the dealership. I probably would have been made fun of mercilessly, not only by the mechanics but by my boyfriend as well. Thanks to everyone for their help!

QR25DE_SpecV · 03-18-2010, 11:49 PM

Another reason to quit smoking, my love

IllusionX · 03-22-2010, 03:08 PM

the air does get sucked from the air by the feet of the passenger side... that's probably why it was able to get stuck on the fan there.. hehe

03-16-2010, 11:36 PM	#1
Corykins Drives: 2008 Yaris Join Date: Mar 2010 Location: Austin, TX Posts: 17	A/C Vent Noise When my A/C is on, it sounds like something is fluttering in the duct. It doesn't appear to be blocked or anything, but the sound is pretty consistent. Common issue?

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03-16-2010, 11:56 PM	#2
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Drop your passenger side glove box and see if something got sucked into the blower (which is right behind the glove box).

03-17-2010, 12:40 AM	#3
Corykins Drives: 2008 Yaris Join Date: Mar 2010 Location: Austin, TX Posts: 17	Thanks for the tip. I went ahead and pulled the glove box out, unfortunately I can't seem to find anything that might be causing the problem. It sounds like it's coming from the central vent, luckily I'm still under warranty. Looks like I'll be taking a trip to the dealership, unless you have any other suggestions?

03-17-2010, 11:15 AM	#5
sex View User's Garage Drives: 09 5DR Join Date: Jul 2009 Location: NY Posts: 310	Is it only when you press the A/C button or when you turn the fan speed up for any blower position? Does it happen in recirculate or open or both? How about parked vs local vs hwy?

03-17-2010, 01:28 PM	#7
swidd Drives: Yaris HB Join Date: Jul 2007 Location: Central Alabama, GOD BLESS AMERICA Posts: 755	You can quite easily (as in, without cutting your fingers) unscrew the bottom of the blower motor housing, and take a look the fan. I put some WD-40 in there, and it made no difference whatsoever to the sound from the motor itself.

03-17-2010, 03:38 PM	#8
eht13 Drives: . Join Date: Dec 2008 Location: . Posts: 363	FWIW, mine made a similar sound for a couple of days... and then just when I was starting to get annoyed and about to take it in, it went away by itself. That was a few months ago. I've had similar situations in other cars too, where it seems like the cause of the sound gets "worked through" and then is gone.

03-18-2010, 12:37 AM	#9
OtownYaris View User's Garage Drives: Meteorite Yaris Liftback Join Date: May 2007 Location: Apopka, FL Posts: 48	I had the same issue until about a minute ago. I just pulled down the glove box and found a pine needle in my blower fan. Problem solved.

03-18-2010, 09:30 PM	#10
Corykins Drives: 2008 Yaris Join Date: Mar 2010 Location: Austin, TX Posts: 17	Found it! A thin piece of plastic from a cigarette pack wrapper was the culprit! I'm SO glad I don't have to go to the dealership. I probably would have been made fun of mercilessly, not only by the mechanics but by my boyfriend as well. Thanks to everyone for their help!

03-22-2010, 03:08 PM	#12
IllusionX It's the illusion you see View User's Garage Drives: 07 Yaris Sedan Aero Join Date: Oct 2006 Location: Brossard, QC Posts: 3,888	the air does get sucked from the air by the feet of the passenger side... that's probably why it was able to get stuck on the fan there.. hehe