Vacuum pump?

[odrag]

odrag,
the egr valve is a round thing with a diaphragm inside about three and a half inches in diameter connected by a tube of about 5/8 inch to the exhaust manifold and attached to the intake manifold. it has a black neoprene vacuum tube (1/4" outside diameter) connected between its top vacuum pot to the intake manifold through a vsv (vacuum switching valve). your idle up mechanism is that of a vacuum throttle kicker with a neoprene vacuum tube connected to the intake manifold via a solenoid valve. please don't forget to check the operation of this valve or its wiring. one of the wires is connected to ground and the other wire connected parallel to the air conditioning clutch wiring.
jick

thanks sir jick! i will do that and post the outcome next time!