Reply
 
Thread Tools Display Modes
  #1  
Old 12-31-2024, 12:20 PM
Tim Corcoran's Avatar
Tim Corcoran Tim Corcoran is offline
Ultimate Warrior
 
Join Date: Jan 2000
Location: Willow Spring, North Carolina
Posts: 5,064
Default 67 LeMans Heater not working

67 Lemans, AC works great fan blows. No heat coming out, heater hose going out of the heater core is cold. Is there a valve that allows hot water to enter the heater core?

__________________
Tim Corcoran
  #2  
Old 01-01-2025, 03:18 AM
dataway's Avatar
dataway dataway is offline
Ultimate Warrior
 
Join Date: Jan 2012
Location: Greenfield TN
Posts: 9,274
Default

Pretty sure there were no valves in the heater hoses until 69. First thing I'd do is pull the hoses off the engine side and see if you can blow through them. If it's an original core it could be totally plugged up.

Did the 67 use the flow restrictor in the pressure side? I'm not sure, I think the 68 did ... it's a spiral spring looking thing in the heater hose fitting at the back of the block. Anyway, possible that is rusted and plugged up.

__________________
I'm World's Best Hyperbolist !!
  #3  
Old 01-15-2025, 08:28 PM
Tim Corcoran's Avatar
Tim Corcoran Tim Corcoran is offline
Ultimate Warrior
 
Join Date: Jan 2000
Location: Willow Spring, North Carolina
Posts: 5,064
Default

It was a leaking and clogged heater core. Thanks

__________________
Tim Corcoran
The Following User Says Thank You to Tim Corcoran For This Useful Post:
Reply


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 01:33 PM.

 

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