Air Con

Following on from my question a week or two ago, about non operational MK3 Cav air con, I had the car looked at. Lo and behold, no refrigerant at all....... so the chap pressure tests the system - no leaks. Refilled, it worked fine - for a week. Now it's stopped again.

Do vauxhall's have a low air temp override that stops you selecting when it's brass monkey weather outside?

Where the hell else can my gas be going?! The compressor is a bit noisy, and we did discuss the possibility of leakage at the bearings there, but it would have to be very slow not to show on a pressure test ( wouldn't it? ).

Ideas? or failing that a good lead to cheap air con compressors

Ian

Reply to
IanDTurner
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When regassing , he should have also put dye into the system which would show under ultra violet.

MrCheerful

Reply to
MrCheerful

If the system was ok and pressure tested have him check the value as this is the only part of the system that he won't have checked.

I had my system regassed twice and the air con guy couldn't find a fault I went else where and suggested they check the value for a leak after refilling and there it was the valve was leaking. It was the old type system R22 so they fitted a brass cap with o ring and that sealed it fine. :-)

Reply to
David Cawkwell

yes, well my old senator did. It did not work below 3 or 4 centigrade

Reply to
Nicholas

Yup - it's 4 degress celcius. It sayeth so in the driver's book of words...

Reply to
Mark

All systems have - it's to stop the fluid from freezing, which would be very bad indeed. It usually shuts the system down when the temperature gets below around four degrees.

If the system has been running low on fluid for a while, there's every chance that the seals have gone, so you'll be needing these replacing. This can get rather expensive.... :(

Reply to
DervMan

nonononono- the low temp cut off on manual air con systems is there to stop the evapourator freezing up- when atmospheric moisture freezes on the surface of it. If this were allowed to happen- eventually no air would be able to pass through- and the expansion / contraction of the ice upon the evapourator could cause it to rupture.

Most climate a/c systems allow the a/c to work at lower ambient temps by using some recirc air- which if the heater is on will be warmer than evap freeze up temperature...

Tim..

Reply to
Tim (Remove NOSPAM.

My bad! It's been a while since I've thought about cars... /blushes, hides under a rock/

Oooh. That works in Kermit, too, come to think of it... d'oh I should have remembered that! :-x

Reply to
DervMan

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