weird noise question

deian · Unread post by **deian** » 13 Aug 2006, 19:48

Hi people, I have a weird noise question for you all. Here goes... (good luck to you all).

It's from the inside of the car and it sounds like some kind of vent opening or closing coming from the passenger front side somewhere, near the glovebox.

It happens randomly and sounds like a slight grinding induced by a stepper motor or something. I'm only guessing it's ventilation, but I can't see why it would happen randomly.

Anyone here know what I'm talking about? Thanks

f00lzz · Unread post by **f00lzz** » 13 Aug 2006, 19:58

Hmmm that used to happen on my old V6.... never found out what it was for sure... but assumed it was something to do with A/C control!!

deian · Unread post by **deian** » 13 Aug 2006, 20:02

it freaks me out you know... ghost in the machine style, maybe my car is trying to talk to me, but i gotta find out what it is, someone here must know

citroenzx · Unread post by **citroenzx** » 13 Aug 2006, 20:03

does your car have auto climate control?

JASON DAVIES · Unread post by **JASON DAVIES** » 13 Aug 2006, 20:06

if your car has climate control like mine the mixing of hot and cold air is controlled by a motorised flap this inturn is controlled by the blower controll module to test it move temp setting switch u should here motor adjusting

deian · Unread post by **deian** » 13 Aug 2006, 20:07

yes, and ac

citroenzx · Unread post by **citroenzx** » 13 Aug 2006, 20:13

Air recycle vent?

f00lzz · Unread post by **f00lzz** » 13 Aug 2006, 20:58

Ha! That sounds right to me... A motorised flap.. perfect

deian · Unread post by **deian** » 13 Aug 2006, 21:15

what else can it be yea, it is TOTALLY random though, over summer i've had the temprature on the coldest and fan on auto, with the air con off and fresh air yea so i don't see why this flap would need to be adjusting as the system would be blowing the coldest air it can get from the outside (over the min temp the system mearues), so no need to mix warm air from the matrix. but i don't doubt your recommendation, funny thing is though.... why on the passenger side only, i've never heard it on the driver side. any other ideas?

thanks

Unread post by **Peter.N.** » 13 Aug 2006, 22:13

The servo motor that operates the flap is on the passengers side behind the glove box. (or at least it is on the XM)

citronut · Unread post by **citronut** » 13 Aug 2006, 22:17

maybe the temp sensing is up the shoot,i think the servo also suffers with stripping its toothypegs
regards malcolm

steelcityuk · Unread post by **steelcityuk** » 14 Aug 2006, 13:12

That sounds like the same issue as 406s have, stripped gears behind the glovebox. I believe a lot of owners just disconnect them.

Steve.