HVAC not working properly
Thread Starter
Heel & Toe
Joined: Nov 2010
Posts: 23
Likes: 0
From: Houston TX
HVAC not working properly
Hi, my AC is acting weird. And Yes, I did do a search before I decided to post. I did not find any concrete answers or solutions.
I have a 99 coupe with dual climate control. I have NO error codes. The driver side is blowing warm/hot air. The passenger side is cold. I can even turn the passenger side **** to HOT and it is still cold. But when I turn the driver **** to HOT, both sides blow hot air. I turn the driver back down to 60 and it is cold on the passenger but not cold on driver side. It seems like the driver **** is controling both sides but the driver vents are not cold. And the passenger **** does nothing.
I tried to do the reset by pulling the fuse as some have recommended on here. But it did not work. I also searched and some say it could be the driver actuator. Some also say it could be the main control unit.
What do you think? Any help or solutions is greatly appreciated. Thanks!
I have a 99 coupe with dual climate control. I have NO error codes. The driver side is blowing warm/hot air. The passenger side is cold. I can even turn the passenger side **** to HOT and it is still cold. But when I turn the driver **** to HOT, both sides blow hot air. I turn the driver back down to 60 and it is cold on the passenger but not cold on driver side. It seems like the driver **** is controling both sides but the driver vents are not cold. And the passenger **** does nothing.
I tried to do the reset by pulling the fuse as some have recommended on here. But it did not work. I also searched and some say it could be the driver actuator. Some also say it could be the main control unit.
What do you think? Any help or solutions is greatly appreciated. Thanks!
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FWIW I had the same issue and while it is probably the actuator I bought a controller from an 04 and installed it...no more issues. The 02 and up have built in logic to overcome a bad actuator.
I figured it was easier than trying to get my damn hands up there to remove the actuator.
I figured it was easier than trying to get my damn hands up there to remove the actuator.
Burning Brakes
Joined: Jun 2010
Posts: 1,014
Likes: 5
From: Rockwall TX
The drivers side controls both sides, the passenger side only adjust a few degrees one way or another, it only compliments what the drivers side is set for, hot or cold. If you have no codes, when did you last check your AC for proper level?
If you haven't, I would first start with that as low freon can cause the issues that you are having.If you are having an acutator problem I would think it would throw a code?
If you haven't, I would first start with that as low freon can cause the issues that you are having.If you are having an acutator problem I would think it would throw a code?
Last edited by dmarkshark; Apr 10, 2011 at 10:53 PM.
Burning Brakes
Joined: Jun 2010
Posts: 1,014
Likes: 5
From: Rockwall TX
He mentioned that he did not have any codes in the original post. I have something that Bill Curlee sent me, if the above does not help I will see if I can find it and pm it to you later.
Last edited by dmarkshark; Apr 11, 2011 at 08:30 AM.
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Thread Starter
Heel & Toe
Joined: Nov 2010
Posts: 23
Likes: 0
From: Houston TX
Thanks everyone for the input. There are no codes, so I don't think it is the actuator. I guess I'll check the freon level next. Hopefully that will solve the problem. I really don't feel like tearing into the dash to change actuator.
