I have a 2001 Cavalier Coupe, I am having problems with the air condition. Freon was added, that evening the air condition started to work. The next day, I turned on the air condition, no cold air. I was told there was no leaks. What should I do?

Had a similar problem. It was in a 2001 Bonneville (GM product also) and it did NOT have dual climate control. Believe it or not, it just needed the freon topped off. Apparently, some evaporation coil designs allow the freon to evaporate too quickly on one side if the freon pressure us low. Then the other side of the coil is warm and that side of the car blows warm. Try adding some. It won't hurt as long as it is not overpressurized. And that won't happen with the cans you buy at the store.

When self adding freon after it leaks out you get air trapped in the system. After adding freon a couple of times the air expands not leaving room for the needed freon. To continue adding freon with air tapped will knock the compressor out pretty quickly, there's not enough room for both & the air is keeping the freon from being able to cool properly give the false indication of being low on freon. The freon you are adding has the dye added to assist in finding the leak since freon does not evaporate nor dissipate it its being leaked out. A black light will assist locating the leak. The best thing is to have the unit checked & serviced by a mechanic...he'll charge about $ 150.00 to check for leaks, remove the old freon...his machine will tell him how much air its trapped in the system by how little freon is removed. For the service fee he will replace valves & gaskets, where needed, correcting most leaks. After sucking the system down & recharging the problem should be corrected.

Need to have it service, low on freon, and have it check for a freon leak.

I apologize if I'm misinterpreting what you're asking, but it sounds like an issue with the Air Conditioning system, and could either be low on freon or a bad compressor. Adding freon you may be able to do yourself, but you have to be careful not to overfill.

Ok if your air conditioning system has lost the freon leak and the compressor does not start even if you have well I recommend the fuses check if you have full charge of freon in the system and then wanted another cause. Thanks

More likely the recharge blew a o-ring and you have a leak. When your Cavalier was blowing hot air and a recharge fixed it that means it was low on freon which lets o-rings dry out, go back to the shop and have them leak test it. They use a pressurized dye to find the problem. If it's blowing it's not the cooling fan relay, they may have meant compressor relay but I'd have a leak test done first it's not expensive and easier that chasing unknown possibilities.

Sounds like the A/C system just needs to be recharged. When was the last time you had this done? Just take it in to your mechanic and he can do it for you and if that's not it for some reason, then he will be able to find the problem but most likely you need more freon added.

Benjamin

sounds like not enough freon or orfas valve is clogged. but most likely it is low on freon

use gage on low side to check pressure while car is running and a/c is on. if pressure is above 50, replace compressor and reciever drier.

Hi, my best advise is to have your air check for freon leaks ,low freon causes the compresor cluth to stop working ,this can cause the air to blow hot .......