Chasing down a blend door problem on a 2000 Taurus wagon. I only get air through the defrost ducts.
Following the pin-point tests for the mechanical side of this system, I get to the A/C vacuum check valve, and it **does not** hold the specified 15 hg for one minute. Pin point test says to replace the valve.
However, while at a junk yard the other day I pulled about five of these valves from other Tauri and saw the same result. None held 15 hg for one minute.
I'm not convinced this part is the problem, and that buying a new one would be a waste of $11. The guy at the parts counter says he's never sold one of these to anyone before.
Any ideas?
Thanks