I read the article on testing the potentionmeter. It says that the wheel on the CCU needs to be turned to the MIN position. Before I took out the dash I replaced the CCU with a new one, and the problem remained. So, will it do any good to try and test the potentionmeter when it probable does'nt receive any signal from the CCU? Also, when testing the switch over valves for vacuum. The article says that you need to crank up the car to test for vacuum comming out of the switch over valves. With the dash out and all those wires laying around I'm a little bit hessitant about sending any electricity through the wires. I was wondering if I could use my Rainbow vacuum cleaner to provide vacuum to do the test? I tried a shop vacuum cleaner, but it only provided about 5 (can't remember the letters that go beside this number). I appreciate your help. Happy Thanksgiving.

Hugh Sr.