A/C adjustment on type 85 for 134a?

[David]

The temp sensor is just to the right of the evaporator. So, remove the glove box to get to it. Remove the 14mm nut that holds it to the bracket and then CAREFULLY move the temp sensor and the capilary tube forward till you can see
the top of it.

There is a small phillips head screw on the top, this is the adjustment screw. Mark that screw and the body of the sensor for where they are at as a reference. Now turn it counter clock-wise to lower the tempurature at which it kicks out the compressor. Use 1/4 turn inrcrements and go for a drive after
each one to make sure the vent temps don't go too low (causing evaporator to freeze. Use a calibrated thermometer in your air vents to accurately check the tempurature.

Some people on AW have reported that their sensor only needed 1/4-1/2 turn, mine OTOH needed a full 2 turns, so YMMV. Anyway, this was WELL worth the time it took to do this. It takes a while, but I now have 36.5*F air coming out of my center vents on a #2 blow with R134a....

Dave
1987 CGT 2.3
SE Virginia


>
> From: qshipaz at juno.com
> Date: 2003/08/18 Mon PM 01:12:32 EDT
> To: quattro at audifans.com
> Subject: A/C adjustment on type 85 for 134a?
>
>
> Greetings Audinauts,
>
> The CGT is being driven daily again (Yay!) and cold air blows from the dash. So far so good. I remember someone coming up with a way to adjust compressor duty cycle to get more cooling from 134a. Tried to google the archives, couldnt locate. Hints, please?
>
> Regards,
> Rob
> '86 CGT (25 mpg on 87 octane- there's a gas shortage here in Phoenix, good timing on the reassembly!)
> '72 Datsun 240Z- 18 mpg on 91 oct- she has the week off :)
>
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