A/C cold then warm
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Joined: Apr 2003
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From: Caledonia, Ontario
A/C cold then warm
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 it and can get more money for it and sell it easier if the air works. Thanks everyone.
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explanation
The refrigerant in the air conditioner loses pressure as it loses heat. The coil acts like a big heat sink to carry away heat and consequently to lower the pressure. If it is plugged the pressure will build up until a safety switch shuts down the compressor. Turning the AC off resets the safety.
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