heater controls
#1
Registered User
Thread Starter
Join Date: Dec 2012
Location: midlothian,va
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
heater controls
on my 93 dually. i am having issues with the vents not changing from derfrost to vent or floor. stuck on derfrost. does anyone have a diagram of vacuum lines in dash an outside at firewall. as it feels like it has no vacuum.
#2
Registered User
Sometimes the doors in the HVAC box will seize up. take off the glove box door,
then you can get your hand on the vacuum linkages, check for frozen linkages
then you can get your hand on the vacuum linkages, check for frozen linkages
#5
Registered User
The main control assembly on the heater/AC control can warp from heat and age. Then they crack open and do not allow the vacuum to be re-directed properly.
But start at the booster, and work your way along all the lines to the interior. You might find a small hole in one of the lines, from rubbing against something...I had this happen to me.
But start at the booster, and work your way along all the lines to the interior. You might find a small hole in one of the lines, from rubbing against something...I had this happen to me.
Thread
Thread Starter
Forum
Replies
Last Post
patriot pearl blue
24 Valve Engine and Drivetrain
10
12-28-2002 12:44 PM