4000 A/C Observations and questions

[colin cohen]

Huw:

Thanks for the info.  Still looking for that ambient sensor.  There is
nothing on my plenum that looks like a sensor, probe etc.

Should I be looking in the engine compartment plenum or the air box of the
ventilation system?

I know you ditch this stuff as soon as you can, but just looking for your
educated guess.

Colin


----- Original Message -----
From: "Huw Powell" <audi at mediaone.net>
To: "colin cohen" <ccohen5 at compuserve.com>
Cc: <urq at audifans.com>; "qlist" <quattro at audifans.com>
Sent: Saturday, June 30, 2001 6:29 PM
Subject: Re: 4000 A/C Observations and questions


>
>
> > 4) Where is the Ambient temp switch which is on Tracks 204/5 of the
Bentley?
> > I could not find anything like this kind of device inside the car or
under
> > the hood?
>
> with any luck you will find it attached to the fresh air inlet at the
> passenger end of the plenum.
>
> > 5) Where is the A/C Idle Stab. Valve on track 209 of the Bentley?
>
> Probably the same one as the ecu uses - in my vague understanding of
> this (remember, i rip out AC first chance I get!), when you turn the AC
> on it uses one of the three ISV pins (on the 3 pin units...) to
> compensate for the extra load on the engine at idle.  I think...
>
> --
> Huw Powell
>
> http://www.humanspeakers.com/audi/
>
> http://www.humanthoughts.org/