#1  
Old 10-13-2019, 01:49 PM
vertbird's Avatar
vertbird vertbird is offline
Senior Chief
 
Join Date: Apr 2006
Location: TN
Posts: 295
Default 76 TA low air flow issues

I just put a complete a/c system in my 76TA. I probably never noticed it before, but I can hear the fan blowing, but there isn't much air coming out of the vents. It's the same on defrost or heat, but it does blow to each of them as directed by the controls. I'm wondering if it's not getting enough air in, but where is the intake for the a/c system? and is there any easy way to determine if the door/flap from the evaporator is opening all the way? Or a good vent flow diagram. Thanks!

  #2  
Old 11-15-2019, 12:04 PM
JC455 JC455 is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Fresno,Ca USA
Posts: 2,005
Default

The fresh air inlet is on the RH side of the cowl (passenger side), under the plastic screen. There is a vacuum actuated air door that opens to allow fresh air into the plenum.
The pass. side kick panel has an add-on bubble-shaped cover that goes over the vacuum door from the plenum/cowl area. You can remove the bubble cover and test it w/ vacuum, or watch it for movement.
Did you check the squirrel cage on the blower motor? They are hard to get to, due to being under the pass. fender/behind the inner wheel house, but the factory put an embossed circle on the inner wheel house to cut out for servicing the motor.

__________________
John
IG: @crawdaddycustoms
YouTube: https://www.youtube.com/channel/UCK9...Nc_lk1Q/videos
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:20 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017