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Automotive AC Prob

The AC only blows external air meaning if it is hot it blows hot air and if it is cold outside it blows cold air but will not cool car in hot weather or heat in cold weather.

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Automotive AC is a complex thing to resolve. I have rebuilt many and have seen what it takes to make them work correctly. Now send me make, model, year and engine type and from there I can help you solve your problem. Thanks, Sea Breeze

Posted on May 30, 2009

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1 Answer

Air conditioner blows cold except at a low idle


Sounds like your AC system is low on coolant. Higher rpm will pump enough to cool but at low rpm low ststem will not cool. You need to go to someone who services AC systems or if you are a DIY person buy a refill kit at an auto parts store or a store with an automotive section.
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I want all cold air it blows hot out the back why


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1 Answer

A/c works fine in the morning, blows out vents at 55* - 59*. later in the day, and as it gets hotter outside, a/c blows hot air. What's up?


could be slightly low on charge-or cooling fan is not working-as the temp outside goes up the ac needs to be more efficent to blow cold air--and really 55 is not that cold--depending on outside conditions should be able to blow at low to mid 40 s

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Hope this helps,

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Ac BLOWING HOT AIR INSTEAD OF COLD. All of a sudden my AC started blowing hot air instead of cold. It is set on cool.


Check to see if your outside unit is running. If not, check the breaker. If it is running you may have an issue with the reversing valve. It looks like three lines coming out of the top and one on the bottom. Trace the wires back to see that they are tight and secure. Of course, TURN OFF THE POWER first. good luck.

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2001 bmw 325i AC blows warm


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Not cold air cool air?


Check your air filter. if its ok call the guy who installed it and have him fix the leak. It prob is a bad weld joint. Check the joints on the copper tubing inside at the coil and outside at the a/c and feel around and see if there is oil leaking from the joint. If not you may have a leak in a coil or on the txv inside on the coil.

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1 Answer

Cooling problem


Since it is not so hot outside you may have to adjust the Thermostat to a lower setting to get the AC unit to kick on the compressor and blow out cold air. Give it a try, and if not the T-stat then we can go from there.

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