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Old 05-09-2014, 03:55 PM   #1
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A/C problem

Okay, so I have a 2007 mustang. Recently the air is being so dumb. Like it will work perfectly fine and then just switches to defrost by itself like it's coming out from vents and then switches to the defrost vents . Help please !
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Old 05-09-2014, 03:56 PM   #2
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What can I do to fix it?? Need help ASAP ! I'm going out of town, and can't have this problem !
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Old 05-09-2014, 10:14 PM   #3
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Does it make a clicking noise when you first start the car or turn the AC on?
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Old 05-09-2014, 11:28 PM   #4
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Yes I think so, like I move it to the max a/c and it goes directly to the defrost vents. Then automatically changes back to normal and it will switch back to defrost . help!
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Old 05-10-2014, 12:23 AM   #5
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There are some switch boxes behind the glove box and radio. The switches can break and make clicking noise when trying to open or close. It could be faulty and not staying open. Or it could be something in the AC controls.
Have you tried disconnecting the battery for about fifteen minutes and resetting everything. That might get things back on track and it's free.
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Old 05-10-2014, 01:10 AM   #6
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No I haven't :/ , I'll tell my bf to do that tomorrow. Thanks! Now that I think about it, it doesn't make a clicking noise. I had seen on google, that it might be a vacuum line? But the guy who checked it had no idea. :/
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Old 05-12-2014, 11:09 AM   #7
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2009 GT/CS The Cicking problem started the day before we left Charllotte. I put up with it until we got home as the noise didn't seem to bother the driveability. I then started looking into and found the the Defrost door actuator was making the noise. This unit is located between the Glove box and the radio stack up near the top on the heater. I replaced this unit and so far it has fixed the clicking noise problem. The part cost $40.00. To get to the actuator you have to lower the glove box ( I removed it). The are three actuators on the passenger side and one on the drivers side.
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Old 05-12-2014, 07:17 PM   #8
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How do I know if that the problem tho :/
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Old 05-12-2014, 09:26 PM   #9
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Quote:
Originally Posted by amanda25b View Post
How do I know if that the problem tho :/
Turn the fan switch to off. Start the car and listen for clicking. Turn on fan switch and AC, you should hear clicking noise from behind the radio for about 5-6 seconds.
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Old 05-12-2014, 10:48 PM   #10
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My problem was the defrost door actuator. I am making a guess that you have a similar problem. It my be another actuator that has gone bad. With the glove compartment opened then lowered operate the AC switch as you put your hand on the different actuators. There are 3 on the passenger side and 1 on the drivers side. The actuator on the drivers side is up near the radio stack. DYou can see them with the glove box lowered. Mine had a tooth missing on one of the gears inside the actuator and vibrated as I cycled the AC switch.
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Old 05-14-2014, 06:37 PM   #11
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So I've been trying it and it doesn't make the clicking noise so what could it be lol
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