Larry--

No need to worry about that. I've already had the valve replaced and run the car several times since with no problems with running away. My question is about pulling a vacuum on the valve, and how immediately it should be coming up.

Fisherman--

I tested the line going from the key switch to the shut-off valve. I kept it connected to the key switch and tested from the engine compartment. I cannot pull a vacuum with the switch on, but I can with the switch off. I then tested the other line (from the vacuum booster to the key switch) in the same fashion and can pull vacuum with the switch on or off.

Rick--

I've got between 20 and 25 inches at the booster line.

Any other suggestions? Thanks!