82zxt. I need to know where the egr valve vacuume line goes to. Also, what is the other egr "looking" valve sitting on the top of the intake manifold about 10 inches to the left of the egr? ...where does that vacuume line connect to?
There should be two small lines running along the intake manifold on the drivers side. The egr vacuum source is the rear most line.
The other valve on the top of the intake is the aac valve. It is used to control idle speed. Its vacuum source is the other metal vacuum line running along the manifold.
The factory service manual explains the function of these valves in detail. Get one.