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[TOOMANYTOYS]

I keep getting little whiffs of antifreeze while driving. I see that the heater control valve has a very slight leak near the arm. Can I just delete this thing or do I need to have it?

 

[salvageV6]

It helps if you have and use the A/C.

 

[TOOMANYTOYS]

I don’t have a/c yet but I am planning on re doing it in the near future.
Does anyone have a part number for it? Everything I find looks nothing like what I have

 

[m233roller]

I don’t have a/c yet but I am planning on re doing it in the near future.
Does anyone have a part number for it? Everything I find looks nothing like what I have

Highway Stars sells just what you need. Go to their site and take a look at it as it is the correct one.

 

[TurboTGuy]

Nick Micale @ Arizona GN has (or had) a line on the original type brass valve, too.

 

[michael evans]

Mine was seized up when I got the car but I needed the defrost. You can take the valve off and install a 11/16 inch male to male nipple, one-piece hose (what I did) or a new valve.

If you take the valve off, You will need to cap off the plastic vacuum line.

 

[m233roller]

Mine was seized up when I got the car but I needed the defrost. You can take the valve off and install a 11/16 inch male to male nipple, one-piece hose (what I did) or a new valve.

If you take the valve off, You will need to cap off the plastic vacuum line.

Heater valve is just that. Install a correct one and have heat and switched no heat, bypass it and have heat all time.

 

[michael evans]

Heater valve is just that. Install a correct one and have heat and switched no heat, bypass it and have heat all time.

What little I have driven the car, I have not noticed anything different.

 

[TurboTGuy]

What little I have driven the car, I have not noticed anything different.

Move to AZ, you'll notice it....... It was 110 here today, 10th day in a row at 110 or above......

 

[michael evans]

Move to AZ, you'll notice it....... It was 110 here today, 10th day in a row at 110 or above......

Have had the car three years and driven it less than 900 miles.

Probably have carried it over 2000.

 

[salvageV6]

The blend door controls the amount heat into the cabin with the slider lever and cable, cold to hot.

As soon as you move it off COLD the heater valve allows water to flow through the core into the plenum chamber.

The water valve keeps hot water out of the heater core and hence out of the plenum box when the slider is in the full COLD position for A/C with no added heat. With our A/C system it needs the valve and any other help it can get.

 

[captndave737]

It helps if you have and use the A/C.

What's having AC have to do with the heater control valve?

 

[No disintegrations]

What's having AC have to do with the heater control valve?

He just explained it. It keeps heat out of the HVAC box when calling for ac. No need to heat and cool at the same time right?

 

[salvageV6]

Heater Water Valve: Page 8A-65-2
The heater water valve is controlled by the heater water valve vacuum motor. With the temperature selector in COLD, the temperature lever valve closes and connects the purple hose (vacuum) to the white hose. This applies vacuum from the tank to the motor. The motor operates, closing the valve. The closed valve blocks hot water from flowing to the heater core.

Temperature Door: Page 8A-65-1
The temperature door is controlled by the temperature selector in the A/C control head (slider). With the selector in COLD, the door is in the Cool position. This prevents air from blowing across the heater core. With the selector in any position but COLD, the temperature door is open. According to the selector position, some or all of the air blows across the heater core.

If you don't think it helps with the A/C just bypass it.

 

[captndave737]

He just explained it. It keeps heat out of the HVAC box when calling for ac. No need to heat and cool at the same time right?

There's a heater control valve even on non AC cars. It just opens and closes the heater hose valve.

 

[No disintegrations]

There's a heater control valve even on non AC cars. It just opens and closes the heater hose valve.

Yah, because there's times in he year when you might not want heat in the car, no? Maybe in the summer even without ac why add heat to the cabin.