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Select reverse … more airflow to foot well … a mystery.
Posted: Fri Jan 28, 2011 2:40 pm
by RayD
Has anyone come across this … when you select reverse on our 2007 1.2 S while the heater fan is on - the airflow to the passenger side foot well increases two fold?
It’s noticeable by the noise it makes … just like changing the fan switch from 2 to 4 but only on the passenger side.
I’ve ruled out the gear change mechanism interfering with the fan speed switch and changing it up a notch or two because it happens even on position 4 … full speed.
Thank you
Ray
Re: Select reverse … more airflow to foot well … a mystery.
Posted: Fri Jan 28, 2011 3:23 pm
by POLOZ
Yup happens in my GTI
Re: Select reverse … more airflow to foot well … a mystery.
Posted: Fri Jan 28, 2011 3:34 pm
by BennoGTi
When you stick the car in reverse, it automatically turns the recircualtion switch on, so the car does not draw in air from outside, just keeps recircualting the air in the car
Its so when you reverse through the exhaust fumes, they don't get sucked into the car
This is the noise you hear when the fan appears to speed up when slecting reverse
Re: Select reverse … more airflow to foot well … a mystery.
Posted: Fri Jan 28, 2011 5:06 pm
by RayD
Thanks for solving that mystery Benno.
Ray
Re: Select reverse … more airflow to foot well … a mystery.
Posted: Sat Jan 29, 2011 6:08 pm
by POLOZ
BennoGTi wrote:When you stick the car in reverse, it automatically turns the recircualtion switch on, so the car does not draw in air from outside, just keeps recircualting the air in the car
Its so when you reverse through the exhaust fumes, they don't get sucked into the car
This is the noise you hear when the fan appears to speed up when slecting reverse
That makes sense
Re: Select reverse … more airflow to foot well … a mystery.
Posted: Sun Jan 30, 2011 10:16 pm
by drennan
I also recently found this out always wondered. Yeah its a feature not a fault lol
Re: Select reverse … more airflow to foot well … a mystery.
Posted: Tue Feb 01, 2011 7:30 pm
by JamieG172
Interesting, good to know. Our 9n and our 9n3 do this, so now I know why! Thanks.
Re: Select reverse … more airflow to foot well … a mystery.
Posted: Sat Jan 18, 2020 9:14 am
by Kpb
BennoGTi wrote: ↑Fri Jan 28, 2011 3:34 pm
When you stick the car in reverse, it automatically turns the recircualtion switch on, so the car does not draw in air from outside, just keeps recircualting the air in the car
Its so when you reverse through the exhaust fumes, they don't get sucked into the car
This is the noise you hear when the fan appears to speed up when slecting reverse
huh........well that solves that for me.
cheers Benno
Re: Select reverse … more airflow to foot well … a mystery.
Posted: Sat Jan 18, 2020 10:25 am
by RUM4MO
Just like your rear wiper wiping the rear screen when you select reverse and the front wiper is on.
Re: Select reverse … more airflow to foot well … a mystery.
Posted: Sun Jan 19, 2020 11:00 am
by foolhandy
I wondered this to - thanks for the explanation. Makes sense.