Air con & Creaking noise

[RICHBLUEBOX]

Hi all. I'm based in the uk, my a/c was recharged last week and doesn't seem to work. The pump activates when switched on. What is the most comon cause of the leak? nay iidea how much it may cost?

Secondly, I have a creaking noise coming from the front when pulling away and when i'm going quite slow i.e 10 mph the car is a 99 2.5. please help.

[0586slb]

With regard to the A/C, what do you mean by it doesn't seem to work? I'ts been quite cold over the last few weeks, so you wouldn't notice whether the A/C was chilling or not. Where did you get it recharged? Did they just re-gas, or do a full evacuation, nitrogen flush and fill with fresh PAG oil and gas? Too much oil can collect where you don't want it to and too little causes an incorrect flow in the system.

Most HVAC systems are designed to dis-engage the compressor when it goes below an outside temperature of +4°C.

The Porsche HVAC uses a soft start compressor, so you don't feel a clunk when the compressor is engaged, the compressor has control valves so it engages pumping at about 20% flow, then increases proportionately with demand.