Hey guys, I'm still putting together my 67 Cougar XR7 and I need some advise. Right now I'm trying hook up the vacuum lines under the dash for the heater / AC box. I have a vacuum schematic for a 67 Mustang (can't find one for a 67 Cougar). I assume that since the Mustang and Cougar are basically the same car and share many of the same parts, that the vacuum schematic for the Mustang would be the same for the Cougar.
In the vacuum schematic there are 4 vacuum lines (which are color labeled; black, white, red & blue) coming off the "Vacuum Regulator on the Control Assembly" (heater and a/c selector switch mounted on the dash between the driver's door & steering column; also has a vent as part of the assembly). The black vacuum line goes from the "Vacuum Regulator on the Control Assembly" to the vacuum canister resevoir, which is mounted on the passenger side fender apron in the engine compartment by the fire wall (the vacuum canister resevoir is also connected to a vacuum port on the intake manifold). In line with this black vacuum line is a "tee" that allows another line to go from this black vacuum line to the "water valve vacuum switch", which is mounted on the front of the heater/AC box. Coming out of the other side of this "water valve vacuum switch" is another vacuum line that goes to the "water valve motor" (the vacuum line from the "tee", through the "water valve vacuum switch" and onto the "water valve motor" is a purple line. So in all actuality, this black line coming off the selector switch on the dash connects to both the vacuum canister and the "water valve motor", via a "tee" in the line.
Ok here's my confusion and my question...Can someone tell me what the purpose of the "water valve motor" is and if I need it? This "water valve motor" is identified at the local parts store (autozone) and by Mustang's Unlimited as a "Heater Control Valve". However, in the schematic I have it's called a "water valve motor". The reason I ask if I need it is because my car didn't have one mounted on the firewall. I have 3 classic Cougars (67 standard, 67 XR7, and a 68 XR7) and none of these cars have a "water valve motor / heater control valve". What is the funtion of this valve and do I need it? In the schematic, there is one vacuum port in the top of it and 2 water ports in the side of it; one going to the heater core and the other goes to the water port in the intake manifold....
If you log onto Mustangs Unlimited - The Premier Source for Mustang, Shelby and Cougar Parts and Accessories and do a search for part number OA44 or type in "heater control valve", you will see the part I'm talking about and the ports on the valve. Any help you can offer is greatly appreciated
In the vacuum schematic there are 4 vacuum lines (which are color labeled; black, white, red & blue) coming off the "Vacuum Regulator on the Control Assembly" (heater and a/c selector switch mounted on the dash between the driver's door & steering column; also has a vent as part of the assembly). The black vacuum line goes from the "Vacuum Regulator on the Control Assembly" to the vacuum canister resevoir, which is mounted on the passenger side fender apron in the engine compartment by the fire wall (the vacuum canister resevoir is also connected to a vacuum port on the intake manifold). In line with this black vacuum line is a "tee" that allows another line to go from this black vacuum line to the "water valve vacuum switch", which is mounted on the front of the heater/AC box. Coming out of the other side of this "water valve vacuum switch" is another vacuum line that goes to the "water valve motor" (the vacuum line from the "tee", through the "water valve vacuum switch" and onto the "water valve motor" is a purple line. So in all actuality, this black line coming off the selector switch on the dash connects to both the vacuum canister and the "water valve motor", via a "tee" in the line.
Ok here's my confusion and my question...Can someone tell me what the purpose of the "water valve motor" is and if I need it? This "water valve motor" is identified at the local parts store (autozone) and by Mustang's Unlimited as a "Heater Control Valve". However, in the schematic I have it's called a "water valve motor". The reason I ask if I need it is because my car didn't have one mounted on the firewall. I have 3 classic Cougars (67 standard, 67 XR7, and a 68 XR7) and none of these cars have a "water valve motor / heater control valve". What is the funtion of this valve and do I need it? In the schematic, there is one vacuum port in the top of it and 2 water ports in the side of it; one going to the heater core and the other goes to the water port in the intake manifold....
If you log onto Mustangs Unlimited - The Premier Source for Mustang, Shelby and Cougar Parts and Accessories and do a search for part number OA44 or type in "heater control valve", you will see the part I'm talking about and the ports on the valve. Any help you can offer is greatly appreciated