siscogts

Hi my 92 gts airvon is not blowing cold air anymore. Last recharge 2 years ago. Heater valve seems to open close correctly (and with heater to full hot it warms up the cockpit really well ), no visual leaks on the compressor, I turned on a/c and after 10 minutes compressor was still pulling, no cold air whatsoever, drier inspection glass showed bubbles all the time a/c was on. I have the distinct impression the system is full enough to turn on the pressure switch, not enough to make cool air .. (apart from the fact that there's is a leak somewhere ... What do you think ?

siscogts

Thanks for every opinion... Francesco

Mikebte

Have you put your hands on the lines at the expansion valve? See if its hot on one side and cold on the other. I don't have a lot of experience with the 928 expansion valve, but its not much different (other than quality) than what I have messed with in the past. One of many possibility I suppose.

Christopher Zach

If you want to fix this yourself buy a solid set of gauges. Then buy a good 1.5cfm vacuum pump.

siscogts

Just touched(thanks that is a good idea I have not had ), both sides warm like every part around, cause the engine heat...

siscogts

I am ready to rebuild compressor (all gaskets and seals, and obviously oil), I have a new expansion valve and drier bottle, all Orings and new charge valves new switches and compressor rubber hoses. I do not have gauges and vacuum pump. Those are for recharge or leak detection?

Mikebte

You will need gauges for Diagnosis, Charging, checking pressures. You will need a vacuum pump to remove moisture from the system after servicing or replacing parts.

siscogts

Ok I will buy it tomorrow. Thanks for the hints...

siscogts

Guys, one question:do you think that one of the problem may lie in the stuck expansion valve ? Thank you
Ps:got gauges and pressure is within specs, just some psi more than lower limit....