On my wife's vehicle I just had the A/C recharged. The A/C never really worked well last year and she complained it smelled so I put in the antimold stuff into the vents. While traveling at a constant speed on the highway the a/c will blow very cold for 5 minutes then go warm. If I turn the a/c off for a minute and then back on it will blow cold for another 5 minutes. I admit I don't know much about a/c systems but what I did notice is that the one line from the compressor gets very cold and water condenses on it. The other line gets almost too hot to touch. I ran the a/c in the driveway at idle for a while and it blew cold air no problem but I didn't notice any water dripping from underneath. What could the problem be or what should I be looking for to get closer to a solution. Any help would be greatly appreciated as we want to sell the car and can get more money for it and sell it easier if the air works. Thanks everyone.

 

one line will be cold and one will be very hot it is hot due to the pressure. check to see if 1 line is freezing up like forming ice.