Why does our vz clubsport aircon stops cooling after about2 hrs. driving but works again after a shout stop.

Your aircon system may need topping up.

when it kick of if you hit the cluch of compressor with anything you got does the compressor start you might have a weak coil when it get warm it not strong enought to keep the cluch ingauge hope it help pierre

get the gas in aircon checked may well be low on pressure

Cars for years have been using a serpentine belt. The compressor only works if the belt is spinning. With the engine running check to make sure the belt is spinning consistently. The alternator or the water pump could be seizing up causing the belt to stop. Check your idler as well. Tension on the belt could be loose and again not turning everything.

is it the ecotec engine fitted 1.8 or 2.0./2.2l or the diesel 1.7 engine.. how long have you not used the air con for. not using it for a long time you can damage the pump the flown sensor. even the temperature sensor. but if the engine is trying to stall with the ac on then the pump may have a fault. ac should be run for 10min once a week no matter the weather. stops you having problems later.

it could be your heater core or your thermstat or you could also be overfilling the radiator try not addng anywater and see if it stops coming out itcould also be a blown head gasket if you run i hot

have you tried refilling the aircon gas ?

It goes empty after a while.

The reason for cold then not cold is because it is a system that works in reverse of your radiator.

The gas cycle through the system. goes through the radiator of the the aircon system (not the same as the one for the engine). there is extracts the heat out of the air. the air is now cold and pushed into the car.

the warm aircon gas the made cold further along the system but the dont have enough in the system.

imagine athletic ruynning around a track. all 20 are bunched up together. there is w spot light in the centre of the infield shining on you.

the track is your aircon system.
the spot light the air coming into your car.
You are the car
The athletes are the aircon gas.

When they run between you and the light the air is cooled off and you are getting cold air.
now of goes the air (athletes) around the system and till they come along again you get hot air.

Now fill up the aircon system (put more runner on the track and voila, less light reached you cos there is more gas in the system.

However if you refill it and after a day or even just a week it the same again you have a leak in your system and will need to have it looked at by someone specializing in car aircon repairs.

Have the compressor and lines checked for leaks again using the UV light dye detector. Sometimes a slow leak that takes 1 or 2 weeks will not show up immediately.

You have a leak most likely, and these are typically hard to spot without test equipment. Take it back to your technician and ask him to recharge the system and perform a dye test to locate the leak. Could be as simple as a bad o-ring in a fitting, or as complicated as a seal in the compressor.

what won't work? the interior fan or is all else well except the cooling part? if the compressor does not come on, then perhaps you need to refill gas. in the very front of the car under the hood, you remove the plastic covers where the hood opener is, and you will see some pipes & a canister. on top of this canister there is a clear small round site glass, you can check there for gas if you have dye, or you can unscrew the cap over the refill nipples and depress with you finger nail, air (gas) should blow out under good pressure, not a little only. there is also a fuse you can check situated in the same place, this is for the compressor