xkeots

Hi All that has contributed to my mess.
I just ripped out all of the anti freeze hoses and replaced them. I also added new Anti-freeze and the car just runs great. This is the first time that an anti freeze change with hoses, I was able to actually feel.
Now the possible culprit!!!!
On one of the heater hoses, the one that is 3/4 and goes from the intake manifold to a vacuum control and then to the heater core I think is the culprit.
When I removed this hose, I found that the line from the control to the heater core had a brown like snake inside the length of the hose and to the core. I pressure cleaned out the line inside of the core and the vacuum control.
I now have a non connected vacuum line on top of this heater vacuum control. Does anyone have a clue as to where this vacuum line goes? I (my common sense) think that this controls the hot water to the heater core and it's why I am not getting hot air to the inside of the car. Can I be right?

Thanks
Jack Miller
1977 C3 L-82

As The Beatles sang "It's Getting Better All The Time"

7T1vette

That is the heater shut-off valve. [And I think I tried to steer you there in your previous thread.] The small vacuum [signal] line running to the top of that valve comes from the heater control unit in the interior of the car. If the valve could not be turned ON (because the signal line was plugged up), that's why you had heat when you didn't want it.

xkeots

I had to pull out the original back mount for the hoses as the replacement vacuum hoses from Willcox were larger than the adapter plate. The hoses do mount on to the replacement switch that I bought. I now have 5 open vacuums and the diagram only has 4 lines that attach. I want to block one up but I was wondering if I could attach the loose hose for the heat control to it. I really dread having to remove the whole dash again.
Any thoughts?

Thanks
Jack

elke_10

can you get a picture of this by chance and i can label the hoses for you. by editing your pic.

xkeots

My camera is down, i will try to borrow one..............thanks!

Jack

0Willcox Corvette

here is a hose schematic... is this what you're looking for? http://willcoxcorvette.com/repairand...lp.php?hID=273

Willcox

0Willcox Corvette

This might be even better....

elke_10

wilcox saved the day i couldnt get my diagram to scan or i woulda done that lol

0Willcox Corvette

xkeots

I am not there right now, but can you please tell me where the heater shut off switch is?
I need to test it as I need to buy a few things from Willcox before the 31st. I want to check all of my vacuum switches.
Thanks for the diagrams, the 1st one is a winner, especially in color.

Jack
77 C3

0Willcox Corvette

The Water Shut off valve is located on top the inner heater box!

Willcox