Results 1 to 3 of 3

Thread: Passenger side hot air only

  1. #1

    Passenger side hot air only

    In my 98 Regal I have only hot air coming from the vents. I have followed the tech service manual and it leads me to replace the HVAC control head unit. I have the dual zone digital control system, I am not looking forward to replacing the expensive unit and all the labor to do it. I am looking for a way to tell the electric controler to go to full cold. Would the signal be full voltage or low voltage?
    98 Buick GS Supercharged
    86 Buick GN Turbocharged
    85 Buick Regal Limited getting a BBB 455 soon
    06 Chevy Duramax Turbocharged
    11 Chevy Duramax Turbocharged

    I love boost.

  2. # ADS
    Circuit advertisement
    Join Date
    Always
    Posts
    Many

  3. #2
    Mud in the hvac box again FlyinGTP's Avatar
    Join Date
    Feb 2005
    Location
    Elk Grove Village, Il
    Posts
    5,795
    the plastic gears in the blend door motors are notorious for breaking. So i would start there. Also a low charge of refrigerant in the ac system can cause hot on one side and cold on the other. On wbodies it is normally the drivers side that blows hot with a low charge and the pass side will blow cold. It has to do with orfice tube placement in relation to the evaporator.
    Peeing in people's cheerios 24/7!
    97 GTP & 00 GP GT



  4. #3
    Where are these plastic gears at?
    98 Buick GS Supercharged
    86 Buick GN Turbocharged
    85 Buick Regal Limited getting a BBB 455 soon
    06 Chevy Duramax Turbocharged
    11 Chevy Duramax Turbocharged

    I love boost.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •