Aspirator Motor location
Thread Starter
Newbie
Joined: Jan 2003
Posts: 6
Likes: 0
From: CONNECTICUT
Aspirator motor
Thanks for your reply, the aspirator motor has a few names. It is a small electric motor that blows cabin air over the heat-ac cabin air temp sensor.
On some models it is in the overhead light area, but mine is behind the dash
Somewhere. It is very noisy and I would like to replace it.
Any instructions on its location and removal would be appreciated.
On some models it is in the overhead light area, but mine is behind the dash
Somewhere. It is very noisy and I would like to replace it.
Any instructions on its location and removal would be appreciated.
Thread Starter
Newbie
Joined: Jan 2003
Posts: 6
Likes: 0
From: CONNECTICUT
Aspirator motor
The whirring noise I hear increases as the engine rpm increases. I can stop the noise by turning off the on/off climate control button. It also will speed up and slow down as the car is at idle. If I turn off the AC the noise is still there. I have replaced the blower motor and idler pulley.
Aspirator motor
Junior Member
Joined: Aug 2007
Posts: 36
Likes: 1
From: B. C. Canada
2005 E320 CDI
I have much the same issue.
I thought it might be coming from a planetary gear set in trans.
It was so closely tied to engine rpm.
Not only that but it sould some times not be there and suddenly appear again; always just turn off the climate control would muffle or silence it. You could hear it nearly disappear with a climate door closing.
Finally one day when wife was driving and it kept on I got under the hood for a good listen. Idling up and down. Noise seemed to be at the front of the engine.
Changed out both belt idlers.
Noise still there. Comes and goes with no apparent reason.
It does not happen when cold;(only when the engine is heat soaked, classically after sitting a while and then starting again)
I'm not sure where to turn next.
This noise is definitely tied directly to engine rpm.
In gear or at idle.
Does not vary with voltage or electrical load.
I'll be looking fwd to hear more on this.
Mileage just over 100,000
I thought it might be coming from a planetary gear set in trans.
It was so closely tied to engine rpm.
Not only that but it sould some times not be there and suddenly appear again; always just turn off the climate control would muffle or silence it. You could hear it nearly disappear with a climate door closing.
Finally one day when wife was driving and it kept on I got under the hood for a good listen. Idling up and down. Noise seemed to be at the front of the engine.
Changed out both belt idlers.
Noise still there. Comes and goes with no apparent reason.
It does not happen when cold;(only when the engine is heat soaked, classically after sitting a while and then starting again)
I'm not sure where to turn next.
This noise is definitely tied directly to engine rpm.
In gear or at idle.
Does not vary with voltage or electrical load.
I'll be looking fwd to hear more on this.
Mileage just over 100,000
Last edited by doxland; Jun 10, 2014 at 04:33 PM. Reason: add info
