Re: Easy AC FIX!

["Fred Munro" <munrof@isys.ca>]

    There is a temp switch in the location Raj mentioned. It measures the
evap core temp and turns the compressor off when it falls below setpoint and
back on when it rises above setpoint. This switch is corrosion-prone because
it is in path of run-off from the plenum tray. I have had to repair this
switch on both my q's.

Fred Munro
'91 200q  255k km

-----Original Message-----
From: Sachelle Babbar <sbabbar@iris.nyit.edu>
To: Jagdeesh Diocee <jdiocee@northwest.ca>
Cc: 'audi' <quattro@coimbra.ans.net>
Date: Tuesday, July 14, 1998 6:32 PM
Subject: Re: Easy AC FIX!


>that's a pressure, not temp switch. If you are low on pressure, you need
>a recharge. You risk ruining the compressor and over pressurizing the
>system (dangerous).
>
>"Ok, brain. Now I don't like you and you don't like me. So why don't we
>get through this thing together so I can go back to doing what I do best:
>killing you with beer."
>                -Homer J. Simpson
>
>
>On Mon, 13 Jul 1998, Jagdeesh Diocee wrote:
>
>> I've had my audi for about 4 years now, the AC has never worked.  When I
>> hit the button you can hear some flaps closing, so the switch is still
>> good.  I checked the fuses, but still no AC.  Well for the last 3 weeks,
>> the temp has been unbearable here, I needed AC badly.  So yesterday I
>> pull my car apart and start looking for something.  I read stuff about
>> the magnetic clutch going bad, so I was kind of worried.  After 4 hours
>> of checking circuits, here were the results:
>> I find there is no power going to the compressor!
>> No power in the fuse box???
>> Kept tracing, tracing, and more tracing of wires until...
>> Right by the (evaporator?), (where the water tray is on the passenger
>> side inside the car), there is a temperature switch which regulates how
>> often the compressor is activated.  This switch is gone bad.  I
>> connected the wires directly to each other, and guess what, AC is
>> working!!!  It needs a recharge, but hey, the clutch is fine, the
>> compressor is fine, it was just the switch.
>>
>> Just thought I'd let everyone know.
>>
>> Raj Diocee
>> -84 4000s 5cyl, no turbo, fwd. with AC blowing!
>>
>