Driverside hot but pass side cold air

Tiny
FLASHPOWERCONTACT
  • MEMBER
  • 1998 BUICK LESABRE
  • 145,000 MILES
I have my heater set to 85 or anything that blows warm air from the driver side, but it blows freezing cold air from the passenger side, the passenger heating control pad on the side even when set to the warmest setting is still blowing freezing air, what could be the problem?
Tuesday, December 6th, 2011 AT 5:16 PM

6 Replies

Tiny
FLASHPOWERCONTACT
  • MEMBER
  • 3 POSTS
I found a blown fuse and replaced it, a blue 15A in section 8A, I started the car and heat started coming from both sides, but the air was blowing from all areas, not just one, it wouldnt switch to mid, floor or windshield, it was coming from all of them, I turned off car and checked fuse again and it was blown again, could this be a short somewhere, how do I fix this.
Was this
answer
helpful?
Yes
No
Tuesday, December 6th, 2011 AT 5:39 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Yes, a short is most likely the issue.
Was this
answer
helpful?
Yes
No
Tuesday, December 6th, 2011 AT 7:32 PM
Tiny
FLASHPOWERCONTACT
  • MEMBER
  • 3 POSTS
How can I find out where it is?
Was this
answer
helpful?
Yes
No
Tuesday, December 6th, 2011 AT 10:06 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Check the blend door actuator.
Was this
answer
helpful?
Yes
No
Tuesday, December 6th, 2011 AT 10:17 PM
Tiny
FLASHPOWERCONTACT
  • MEMBER
  • 3 POSTS
What exactly is that o.O
Was this
answer
helpful?
Yes
No
Tuesday, December 6th, 2011 AT 10:23 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
A blend door is part of the HVAC on your vehicle. Near the heater core, the blend air doors are located. The heater core is hot from engine coolant and the blend air doors open to allow heated air to enter the vehicle. Based on how far they are open determines how much heat you get in the vehicle. If they are closed, you get none.

The blend air door actuator is the device that opens the door to allow air to enter the vehicle. It moves based on the temp requested by the driver. If the actuator is bad, the door will not open and you will not get heat.
Was this
answer
helpful?
Yes
No
Tuesday, December 6th, 2011 AT 10:28 PM

Please login or register to post a reply.

Related Air Conditioner Not Working Content

Fix an Air Conditioning Not Working Video
VIDEO
Fix an Air Conditioning Not Working Video
Instructional repair video
Air Conditioner Not Working
GUIDE
Air Conditioner Not Working
Like any sub system in today's car a problem and be minor or a little more involved, this guide will help you find the problem and perform repairs. You can be the judge if...
VIEW MORE