A/C Blowing Hot
#1
Registered User
Thread Starter
Join Date: Aug 2006
Location: Arizona
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
A/C Blowing Hot
I have a 2001 2500 4X4. I need a little help troubleshooting a heater problem. With the A/C or vent turned to full cold I get hot air when sitting at a stop light with the brakes applied. I can get the heater to cold again by turning the control to off and then back to A/C or vent but the next time I brake the heat comes back. The only thing I know the two systems have in common is vacuum. Does anyone have a suggestion or idea where I should start to look?
#4
Registered User
sounds like a vacuum problem, when u break u r pulling vacuum for the brakes. look for a broken line going from the pump too the ac controls, the rubber connection boots dry out and crack too. the blend door isnt a prob on the 2nd gens.
#5
Registered User
X2 -it sounds like a vac supply problem. When stopped not strong enough to keep the blend door in the proper position.
#6
Registered User
The blend door is electric, all the other mode actuators are vacuum. With the key on have a look with a flash lite under the dash up by the hump on the pax side, rotate the temp sel sw from hot to cold, you should see the blend door act rotate and move the door from hot to cold. This is the first thing to do as you may find your problem right there.
#7
Registered User
vacuum is not used on the brakes on a 2001, they use power steering pump pressure
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
Strjock81
3rd Gen High Performance and Accessories (5.9L Only)
16
12-12-2007 09:53 AM
duallydave
Performance and Accessories 2nd gen only
3
08-07-2005 09:38 PM