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Yes.. I have replaced the b/w check valves a few times since 1996 when I bought the car. Usually in boost the air stops coming out the air vents facing me. It is not the check valves. Vacume is leaking somewhere else. But recently it has changed to .... DEAD. It is like a switch is on or off. The Climate Control either is working, albeit not so good in possitve manifold pressure, or not working and the air is coming out the side vents for the door windows and a little defrost and some at the heat vents on the floor. AS the FAQ's state it, all actuator motors in a no-vacume position. The first time this "new" senerio happened was a few weeks ago and I quickly noticed it. You see... I live on a 1.5 mile dirt road and when it is dusty in the summer, I have to have the windows up and the air on 4 or 5 so no dust will creep in thru the flapper air passages in the spare tire area, or is it called a tool compartment. So with a 3000 mile trip coming up the end of September I need to get something done with this. My last trip to Seattle with the windows down loosened up the rest of the head liner that had not yet fallen. Great. The AC is out of service since I hit a deer last year. I need a new condenser and fan. So.... life is fun. Just getting the air to come out where it should at this point would be a major plus. One thing I just remembered that is peculiar, is that last year towards the end of the summer, when I had been driving for hours, and the AC had gotten everything quite cool, I noticed that on up hills that the AC kept blowing out the front vents. This was nice... but short lived upon using the AC the next day, but would repeat itself once everything was cooled down or the day got cooler. So I thought, what is causing the vacume to not get leaked? It led me to think there was something intermitant that was heat sensitive. Not knowing this system I could only guess. I am realy greatful for your help.
Glenn
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