A/C stopped working CGT - need advice

[David]

When the compressor kicks in, how long does it stay one (duty cycle)? Also, look at the site glass on the reciever/dryer...bubbles = low on freon. Now under your dash is the drain try, pull it down and feel the evaporator...is it cold? After a few minutes, does your radiator fan kick into high (triggered by the high pressure switch)? Having the ansers to these questions will help us determine wher the fault is...

Dave
1987 CGT w/ vent temps of 38*F :)
SE Virginia
>
> From: "J. Lyons" <raudi1 at value.net>
> Date: 2003/06/26 Thu PM 06:32:11 EDT
> To: quattro at audifans.com
> Subject: A/C stopped working CGT - need advice
>
> Hello all,
>
> Well summer heat is upon us here in the East Bay Area. So I go to fire
> up the A/C in my CGT turbo the other day (have not used it in 8-9
> months) only  to find it no longer blows cold. WONDERFUL!
>
> Anyhow, it seems that the compressor clutch is engaging (can here it
> click on) but no cold air comes out of my vents. I was under the
> impression that if the system was not pressurized that the compressor
> clutch would not engage (at least that's how it seemed to work on my '79
> 5KS) since it used the freon as the pump lubricant, so I believe the
> system is still charged. Am I correct in my thinking here?
>
> I have checked the heater valve (it is not stuck open), and the vacuum
> line to the fresh air intake (had the check valve go bad once, resulted
> in similar A/C problem) but it is not that either. All other HVAC
> features are functioning properly.
>
> Any ideas guys? I've seen a lot of posts recently about A/C problems (so
> it must be that time of year), so maybe somebody has the answer for me too.
>
> TIA
> J. Lyons
> 84 CGT turbo
> 86 4KCSQ
> 79 5KS
>
>