Was it a new pedal from the dealer? Its possible that the rod attached to the car that the pedal moves is damaged, other than that I don't know what the problem might be. The old style pedals have a cheap plastic double hinge which just works by bending the plastic back and forth until the pedal breaks off of the part that attaches to the rod and jams the throttle wide open. Especially with the problem I mentioned in the first post I dont want that to happen to me again. The new pedal (same part number) has been redesigned to just slide back and forth on the shaft. It was very difficult to slide on, and it mostly works ok except for sticking down just enough to make it idle a little high.

But, as far as my original question, so I should use the method mentioned to check the shutoff valve by applying vacuum to a clear hose and see if the engine shuts off and if it sucks any oil into the hose, and if thats not the problem then there is probably an internal problem with the injection pump? If that's the case it will be for sale, its still a nice car otherwise but I don't want to spend the money to buy a rebuilt pump (and pay to have it installed too since I don't know how).