Miscellaneous Technical Modifications - Contents

Vacuum for interior heating valves

One day I was cruising in the Coronet. The weather was not that good. No sun and a bit chilly. Nothing wrong so far, but it was a little bit windy inside the car. Out of all air vents came cold air. What was wrong? And then I remembered. After installing the new intake manifold, I didn't connect the vacuum hose for the passenger compartment!. I bought, a long time ago just for this purpose, a new NPT to hosebarb. Installed this fitting and connected the old vacuum hose to the new one. And voila, problem solved, yeah \m/.
I seems that all the air valves are normally open without vacuum. I did not notice this earlier this year, because of the warm and sunny weather...