2011 Mustang V6 AC not working - Mustang Evolution

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Old 06-21-2015, 12:09 PM   #1
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2011 Mustang V6 AC not working

Good afternoon.

The A/C in my 2011 Mustang V6 has stopped working. The A/C turns on but just blows hot air. First, does anyone have an idea of what could have caused this? The car has only around 35000 miles on it.

Would it be worth it to try AC Pro or some other re-charging kit or should I just bite the bullet and take it in for service?

Thanks.
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Old 06-21-2015, 12:29 PM   #2
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A lot of mustangs have problems with the a/c. You should be good since you still have warranty.
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Old 06-21-2015, 01:02 PM   #3
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A lot of mustangs have problems with the a/c. You should be good since you still have warranty.
I don't think it's under warranty still. Thought that was 3/36000. I'm just about at 36000 but over 3 years of ownership.
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Old 06-21-2015, 01:52 PM   #4
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the problem with the self charge kits is that normally it leaked for a reason...you can try it but it's doubtful it will last.
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Old 06-21-2015, 01:55 PM   #5
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By the AC turns on do you mean you hear the compressor turn on or you just get air coming out of the vents? If your compressor isn't coming on, the recharge kit isn't going to do anything.
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Old 06-21-2015, 02:00 PM   #6
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Check the pipe running from the compressor to the condenser by the radiator. This pipe often develops leaks at the "muffler" that is attached inline near the compressor. The pipe might even be broken near it. A black light will show any leaks. The fix is to replace the pipe and have it evacuated and charged. The new pipe has no muffler. Here's a pic of my leaky muffler under a led black light.
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Old 06-21-2015, 02:10 PM   #7
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By the AC turns on do you mean you hear the compressor turn on or you just get air coming out of the vents? If your compressor isn't coming on, the recharge kit isn't going to do anything.
recharge MAY fill it up enuf that IF it's off from low psi protection it will (for a while)
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Old 06-22-2015, 01:22 AM   #8
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I hate those recharge kits. It's sooo ez to overfill and have the compressor stop working due to overcharge protection.
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Old 06-22-2015, 04:33 AM   #9
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I'm not being a doosh, sometimes a problem is super simple and we forget little things. Make sure this button is lit up. Again, no insult intended but you never know.
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Old 06-22-2015, 06:07 AM   #10
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What you need to do is get a set of gauges that will let you hook up to the high and low sides of your system and check if your refrigerant levels are within spec or not. A decent set of gauges is less than 50-75 bucks. Sounds like a lot, but you will pay more than that for a hours labor at a shop. You hook it up, turn the car on, put the ac on blast (max ac) and watch both the high and low sides. You will be able to see if the pressures fall in the "green" or acceptable areas. If they do, well something else is wrong. If they don't, you can hook up a can of refrigerant to this very set of gauges and carefully add refrigerant until it's perfectly set to the correct levels on each side. The high and low side will even out as the compressor turns on. Sometimes you need very little and before you know it your back in business. Now some say well it must be leaking from somewhere. You can always track down that culprit usually a bad o ring, but if your system isn't completely empty when you check the pressures then the leak (if it has one) maybe so insignificant that you can get through the summer without any issues.


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Old 06-22-2015, 04:16 PM   #11
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I'm not sure how the Mustang AC/Heating system works but you may want to investigate to ensure that any vacuum operated doors are being opened to allow air to flow over the AC coil and into the cabin.
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Old 06-22-2015, 06:48 PM   #12
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Quote:
Originally Posted by iguanaman3 View Post
Check the pipe running from the compressor to the condenser by the radiator. This pipe often develops leaks at the "muffler" that is attached inline near the compressor. The pipe might even be broken near it. A black light will show any leaks. The fix is to replace the pipe and have it evacuated and charged. The new pipe has no muffler. Here's a pic of my leaky muffler under a led black light.
The fix is to replace the pipe and have it evacuated and charged.

You mean EVAULATED and CHARGED?
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Old 06-22-2015, 07:07 PM   #13
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You have to evacuate the air and moisture before you charge a AC system that has been opened.
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