No Heat On Recirc
Thread Starter
|
1st Gear
Joined: Jan 2026
Posts: 1
Likes: 0
No Heat On Recirc
I have a 2003 F250 Super Duty 6.0. When set to fresh air the heat works as it should. If changed to recirculation the air stays hot for maybe 30 seconds and begins to cool off all the way down to cold. When switched back to fresh air it heats again immediately. I have changed the blend door actuator with no change. Any help would be appreciated.
Laughing Gas
Joined: May 2024
Posts: 908
Likes: 290
From: E TN
Is it somehow closing the heater control valve in the heater hose? 2003 should have one installed and it actuates by vacum and should only shut the water when the AC is on but after 20 years things happen.
Thread
Thread Starter
Forum
Replies
Last Post
