Air conditioner blow warm air after freeon

Yes, It has to be done by weight. Now you need to take it to a vehicle AC place, have the refrigerant sucked out of it onto a recovery machine that also creates a vacuum and the correct amount of gas added by weight. They use subtractive scales to weigh the gas cylinder. It also has to be the right type of gas.

you need to have someone look at it that knows vw a/c systems
there too many things that could cause this to start guessing

I have a feeling that no one is checking the blend door in the plenum.

check oil level in compressor if oil level ok your orfice tube may be cloged or you have a line that has a leaking it loosing freon you could buy a leak detector dye for diy at your auto parts store that will show a leak in system

Start with fuse section of owner's manual. This will tell you where fuse box is located and which fuses are for each circuit.

you need to have a repair shop do a leak check/test since you r losing freon somewhere if you have to keep adding it. Once it all leaks out it allows air to enter and air IS NOT a good thing for a/c systems. They run under an initial 30 inches of vacuum for freon charging.

its probley leaking in the evaporator you cannot see it without removing the dash see if anyone that you know has a freon sniffer then lacated the drain tube for the evaporator case most of the time its located on the fire wall on the right lower area with a full charge use the sniffer and see if indicates a leak

at idle most a/c get warmer as they are not under load to circulate the freon at a rapid pace
changing the dryer is wasting your money won't change anything sounds to me as if there might be a vapour lock in the system. run the car for a week with a/c on max to fully circulate freon to see if the problem goes away if not go back to the shot tell them to check system with gauges on the high and low side to make sure that it infact is properly charged with the right amount and temp.
42-54 degrees is good

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

If the air conditioner blow warm air,

1. Open the hood and check the fan belt first, sometime the fan belt broke caused the compressor stop to work, if the fan belt is good, check the compressor see if the center part turns, if turns, that means the compressor is o.k.

2. If both work fine, check the air conditioner small window see if there is bubble, if you see some bubbles in the small round window, that’s means your air conditioner lack
R-22 Freon.

3. before you fill up the Freon, check the leaking, if leaks, fix it and then fill up the Freon, the best way is to ask some professional auto air conditioner repair shop to help you.


Hope this can help you.