Re: air con.

["Douglas Hurst Quebbeman" <dougq@iglou.com>]

> In a message dated 98-06-03 00:31:52 EDT, mhauk@ccsdana.net writes:
> 
> << 
>  Okay, time to call upon the collective knowledge of the Qlist.  Having
>  problems with getting the compressor to engage on 89 200tq.  Known: 1) Have
>  power to low pressure switch.  2) Able to engage compressor by jumping
>  wires at compressor.  What we are having a problem with is the fact that we
>  cannot get voltage or find the wire for that matter that flows from the low
>  pressure switch over to ?  Is there a relay somplace for this?  Fuse box
>  has a listing for (2) two relays but there has never been a relay in that
>  location for as long as I remember. (Air used to work very well)
>  
>  Any help would be greatly and cooly :) appreciated.
>  
>  Thanks,
>  
>  Dave
>   >>
> 
> You couln't have put it better Dave.
> I was about to write word for word the same damn thing.
> I was told by an Audi Dealer Shoemaker, that the 4-way sensor switch would
> solve this A/C and my Temp gauge problem.
> So I payed 4?$$$ for the switch put it in aaaannnndddd nada same 2 problems
> but 4?$ less now.
> 
> Hope some one can help us.
> 
> Chewy

I Just went through this process this weekend. The low
pressure switch connects to the compressor through one 
of the so-called Kostal connectors. On my 86 5kcstq, it's
connector 6. If you remove the male plug, among other wires,
you'll see a heavy-guage green wire, and another heavy
guage green with yellow stripe.

With the car running, A/C set to AUTO and LOwest temp,
if you short across the two terminals where these wires
terminate, the compressor should engage. If it does,
then you have a leak and insufficient freon to allow
the system to function. If the compressor does not engage,
then you have at least a bad compressor clutch.

hth,
doug q 
--
-Douglas Hurst Quebbeman (dougq@iglou.com)            [Call me "Doug"]
    QuattroClub USA# 4536              Audi International # 100024
       74 100LS Auto, 77 100LS Auto, 84 Coupe GT, 86 5Kcstq   
"The large print giveth, and the small print taketh away."  -Tom Waits