A lot of our vacuum sources are controlled by a solenoid. The EGR valve and air pump lines are controlled by the solenoids mounted on the backside of the passenger strut tower. The canister purge solenoid is probably located on the canister itself.
Make sure that when the car is at idle that there is no vacuum present in the line going to the EGR valve. The solenoid should be closed. If there is vacuum, you either have the wrong vacuum line hooked up, or your solenoid is faulty. It's possible that you could accidently mix up the vacuum line to the FPR and the EGR valve which would mean that fuel pressure wouldn't change with vacuum like it should and that the EGR would be stuck open. The computer is good enough, by the way, to somewhat compensate for a stuck open EGR.
You may have an electrical issue which is causing all of the failures. Chris is probably a better person to help you work through those issues, though.
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