AC Dual Zone Problem
Thread Starter
Instructor
Joined: Jun 2006
Posts: 241
Likes: 0
From: Gambrills Maryland
AC Dual Zone Problem
The passengers vents blow cold while the drivers vents blow warm to hot.
There is the proper level of freon in the car.
I tried the 27# fuse reset and that made no difference.
The car is throwing no HVAC codes.
I figure it is my actuator however I was pretty sure if one went bad they would throw a code. Please help!
There is the proper level of freon in the car.
I tried the 27# fuse reset and that made no difference.
The car is throwing no HVAC codes.
I figure it is my actuator however I was pretty sure if one went bad they would throw a code. Please help!
Burning Brakes
Joined: Apr 2000
Posts: 824
Likes: 4
From: San Diego CA
Hot Air Drivers Side
I am having the same problem, I have a 2001 coupe, with the dual zone air. The air coming out of the driver’s side is warm while moving but starts to cool down went stopped. The passenger side seems to work fine. I checked HVAC codes and none are present.
I am going to next disconnect the battery for 60 seconds and see if the actuators recalibrate and then check for codes.
My controller was repaired by David Ruberg for the dim display in April of 08 maybe I have a problem with the controller, is there a way to test the conroller?
I have spent the last several days reading A/C posts. Bill Curlee please respond.
I am going to next disconnect the battery for 60 seconds and see if the actuators recalibrate and then check for codes.
My controller was repaired by David Ruberg for the dim display in April of 08 maybe I have a problem with the controller, is there a way to test the conroller?
I have spent the last several days reading A/C posts. Bill Curlee please respond.
Last edited by Pie R Squared; Jul 22, 2009 at 09:29 PM. Reason: more text
Instructor
Joined: Apr 2006
Posts: 162
Likes: 8
From: Gardner KS
The passengers vents blow cold while the drivers vents blow warm to hot.
There is the proper level of freon in the car.
I tried the 27# fuse reset and that made no difference.
The car is throwing no HVAC codes.
I figure it is my actuator however I was pretty sure if one went bad they would throw a code. Please help!
There is the proper level of freon in the car.
I tried the 27# fuse reset and that made no difference.
The car is throwing no HVAC codes.
I figure it is my actuator however I was pretty sure if one went bad they would throw a code. Please help!
Feel if the air DOES get ice cold on the driver's side before turning hot. This was my case (with no codes) meaning the actuator reported correctly but the door position was not correct. I noticed by resetting codes it WILL open the door fully momentarily.
Pro
Joined: Sep 2007
Posts: 735
Likes: 7
From: Bucks County Pa
Good Luck
Burning Brakes
Joined: Apr 2000
Posts: 824
Likes: 4
From: San Diego CA
1) Disconnected the battery for 60+ seconds, no codes and left side warm air.
2) Did a 99-HVAC reset while driving, (that was interesting), no codes and left side warm air.
I guess my next step is to find someone to check my R-134 but I don't understand how this would effect the left side vents. I looked at the signals on the 34 pin HVAC controller and I don't see any signals that would monitor the R-134 pressure.
2) Did a 99-HVAC reset while driving, (that was interesting), no codes and left side warm air.
I guess my next step is to find someone to check my R-134 but I don't understand how this would effect the left side vents. I looked at the signals on the 34 pin HVAC controller and I don't see any signals that would monitor the R-134 pressure.
2nd Gear
Joined: Oct 2008
Posts: 2
Likes: 0
Having the same problem
all my issues started when replacing my battery ,a/c working less each time i drive it which is about twice a week like theres no high blow on a/c. then started doing the same as other guy on this original post. reindexing?
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Pro
Joined: Sep 2007
Posts: 735
Likes: 7
From: Bucks County Pa
AC vent explanation
1) Disconnected the battery for 60+ seconds, no codes and left side warm air.
2) Did a 99-HVAC reset while driving, (that was interesting), no codes and left side warm air.
I guess my next step is to find someone to check my R-134 but I don't understand how this would effect the left side vents. I looked at the signals on the 34 pin HVAC controller and I don't see any signals that would monitor the R-134 pressure.
2) Did a 99-HVAC reset while driving, (that was interesting), no codes and left side warm air.
I guess my next step is to find someone to check my R-134 but I don't understand how this would effect the left side vents. I looked at the signals on the 34 pin HVAC controller and I don't see any signals that would monitor the R-134 pressure.
Check the levels and recharge.
Good Luck
Instructor
Joined: Apr 2006
Posts: 162
Likes: 8
From: Gardner KS
What else could it be for mine? If it was the actuator; manually flipping the damper door should have bypassed it right? Why does it turn ice cold the instant I hit reset on HVAC before sweeping to hot (then back to warm) ? I guess I'm a bit confused.
Premium Supporting Vendor
Joined: Nov 2006
Posts: 30,317
Likes: 165
From: Reading PA
If my driver's side blows warm air... by doing HVAC reset, it will momentarily blow ice cold air on the driver's side before going hot then back to warm. Unfortunately my actuator could not be indexed; also moved the damper with my finger (actuator removed) and it was still blowing warm air.
What else could it be for mine? If it was the actuator; manually flipping the damper door should have bypassed it right? Why does it turn ice cold the instant I hit reset on HVAC before sweeping to hot (then back to warm) ? I guess I'm a bit confused.
What else could it be for mine? If it was the actuator; manually flipping the damper door should have bypassed it right? Why does it turn ice cold the instant I hit reset on HVAC before sweeping to hot (then back to warm) ? I guess I'm a bit confused.
