ive been told it's possible I have the wrong heater valve in my buick, (someone plugged it up and when I removed the plug I had no heat) can someone give me a part number or a link for an A/C wildcat heater valve?
You may have the wrong one, but there should be a vacuum hose going to it. Without it, its not going to work correctly. A non auto A/C heater valve should be readily available at any local parts house
If you put the temp lever all the way to the left, the water valve has no vacuum applied to it and is in the closed position. Once you move it at least 1/3 of the way to the right, vacuum is applied to the valve, it opens and permits the flow of coolant through the heater core. So....make sure you test for vacuum at the end of the hose when the temp lever is over to the right. If you have vacuum, then you might have a valve that works opposite. In other words, it closes when vacuum is applied to it
Dodge valves are good for that, AND they look the same. The books at the motor parts store call it "Fail open" or "Fail closed". Jason is right on its operation. Youll need to supply a vacuum source to the valve itself to test if its FO or FC... This one was wrong; without vacuum it was WOT. That means the AC is trying to cool the heater core. I got another and put the ol' sucker lips on it to close it, and managed to get a finger in there over the tip to hold the vacuum and it stayed closed. In normal operation, even tho both hoses will be hot (from the heater core), there should be a noticeable difference between the two when close. One guy here and I discussed at length the "direction of installation" as well. I doubt the water pump will develop enough pressure to pop it off its seat so I did mine like this with success... ws
So just to be sure does anyone know where I can find the correct one? Also, my air conditioning compressor was disconnected before I got the car, apparently it's ceased, does this have anything to do with this possibly?
http://www.ebay.com/itm/Buick-Heate...74-/270798233924?_trksid=p2385738.m2548.l4275 A system this old may need a lot of parts in order to retain its freon. The compressor, the core, the dryer, seals, lines are all suspect. An AC renovation at a shop can run $1000-$2000.
