The aircon low pressure side should be running at around 25psi, so with the engine running and the a/c switched on, unscrew the black dust cover and using a thin screwdriver poke the middle of the valve briefly to see if any refrigerant escapes under pressure. If it does, then a top-up may be all that you need. It was all that was needed 2 years ago when I bought my escort.
Disclaimer: Venting refrigerant to the atmosphere is very environmentally unfriendly so make sure you don't do that ;-)
Last edited by: Dave_TD {P} on Mon 7 Jun 10 at 23:11
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Volkswagen Passat - 96 1.8 Heater and ai.. new
Volkswagen Passat - 96 1.8 Heater and.. new