View single post by francisg
 Posted: 03-30-2014 06:15 pm
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Joined: 02-20-2009
Location: San Rafael, California USA
Posts: 28
I noticed that all 1/4 in. vacuum hoses going to/from the heater system are missing. I understand the regulating control valve is mounted above the valve cover in the engine bay, this valve is activated by a small on/off vacuum switch located on the left side of the heater box inside the car. This little valve has 2 ports i assume one port is for vacuum coming from the intake manifold, and the other port going to the heater control valve in the engine compartment.
Can you please confirm that is how it works. Thanks
Francis G