Air Con

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

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. :-)

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

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

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.... :(

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..

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