Caution - Do Not Remove
Help!!!!! I have done everything i can think of! I have a 79 corvette. I cannot get the vacuum selector valve to select between air cond, vent, or defroster. I have tried three different selector switchs, bought a whole new selector assembly, replaced and checked the water shut off switch, replaced all the vacuum hoses and connected the hoses directly to the vacuum selector valve and nothing works. When i connect the main vacumm hose directly to any seperate component using a bypass hose they work great!, then when i hooked them up directly to the contral valve i get nothing, but air blowing out of the heater duct. the water bypass shut off seems to be working because when i select between hot and cold it works regardless of the position of the upper selection switch. Any suggestions? Have I missed something simple? I losing precious time i could be using checking out the babes section.