RS2 intermittant A/C

[Samppa]

Any ideas where to start locating these wires ?

[Skull]

samppa: im pretty sure you have some cables cut, or bad connection. your AC is not working because of the 22.3 code

[Samppa]

Hi,

had to dig up this old thread since Im having also trouble with the RS2 A/C. A/C Icon appears in display but compressor wont start. Today I'll visit the local A/C shop for a refill. Here are the codes:

02.1 (G86) Interior temperature sensor, In Headliner, static open

03.1 (G56) Interior temperature sensor, in Instrument panel, static open

05.1 (G17) Outside air (Ambient) Temperature sensor, front, static open

06.4 Engine coolant temperature (ECT), A/C sporadic short

22.3 A/C Refrigerant high pressure switch, sporadic open.

Any Ideas ?

My outside temp gauge went dead couple months ago, does it cause problems with A/C?

[audiman]

Try PM'ing Madshad. Her husband is an AC engineer by trade and does it all day everyday, he may know more than myself

[audiman]

This is an odd one! Try extracting the fault codes from the system. Sounds as if the temps in the condenser are getting to high and making the compressor stop. Report back with fault codes if any. When was the last tme it was re-gassed?

[panzerwagen]

Their is a test that can be done.

If it has the same unit that came with the 20V cars. The 20V org. site has the procedure on how to call up the sensors and test them.

[super-g]

Hot Air

Thanks for reply Martyn

Everything works fine when starting from cold, its only when it gets really hot
under the bonnet and stopping in traffic that the aircon pump stops working, the fan is still working. The pump will only kicks in again when you start moving, the aircon fan is working all the time.

This might sound normal, yes if the aircon pump would kick in again in the stationary position. Its only when your on the move again that the aircon pump kicks in.

If you stop the engine and restart without moving the aircon pump usually stays on all the time with the second high-speed fan cutting in.

When the pump is working the inside of the car is very very cold.

Hope someone out there is an Aircon Genius? What do you think Martin.

Talk soon

Gaz

[Martynf]

Gareth,

I am no expect on AC, Audiman is the most qualified to comment on air con, he is a god with air con, but whilst you're waiting for his reply, is the aircon belt tight?

The temp sender behind the front panel feeds the air temp gauge yes, and if the air temp is lower than 5 C then the AC will not run (safety feature) this information is taken from that sensor.

Check basics first, like the drive belt!

[s2audi]

posted for a friend....

My aircon works fine when the car is moving but when stationary for more than 1 minute the aircon switches off and comes on again when moving.

I've heard that there are two temp sensors, one is at the front of the car on my right hand drive RS2 under the NS front valence about 50mm long with black shroud which also controls the temp readout metre inside the car and the other maybe in the fresh air intake under the pollen filter but is different in appearance being about 20mm dia made from stainless steel with two screw fixing either side, does this sound correct ?

do you know how to tell which one is probably faulty.


Gareth Davies
Lower Earley
Reading
Berks