I got the car from Florida and the heating system was basically gone. No heater hoses, plugs were in the water pump and intake manifold, and no heater control valve. I don't want to take the dash completely down and managed to replace the heater core without doing so.
I also didn’t want to go thru the back door by removing the blower motor to access the water temperature control valve. Instead, I rigged a manual bypass for the heater in the engine compartment to be operated by cable. However, I seem to have no control over the doors in the vent system. I have good airflow from the blower but no heated air and no control over where the air goes. Is there a way to test whether the water temperature control valve failed in the off or closed position? Any other ideas?
The second issue is the factory thermostatic valve is not completely connected and to the lower right there appears to be a non-factory thermostatic control valve replacement or bypass which does not use vacuum. Can anyone guess how someone might have been getting vacuum? The last owner told me that the a/c would blow cold but no one could figure out why the Volume of air flow was deficient. Would replacing the factory thermostatic valve and removing the other be a solution?
A third, related issue is the door locks and rear vent don't work. I think there must be a vacuum interface or junction but I don't know exactly what type of interface or junction to look for or a probable location, in relation to the other components. Can you give us some direction?
The only vacuum diagram I have been able to obtain is just for the heat and air system.
Thanks for any help or guidance anyone would be willing to share. Groovybird doesn’t give up her secrets easily! --CJ
