Exhaust Gas Recirculation (EGR) Control Solenoid Valve

Two types of solenoid valves are used on Probe vehicles. They are mounted on the firewall.

A single solenoid is used on non-turbo vehicles. The solenoid provides vacuum to EGR valve when de-energized. The line to the EGR valve is vented to the atmosphere when the solenoid valve is energized. It is controlled by the ECA.

The turbo engine uses a dual solenoid valve. One solenoid supplies vacuum to the EGR valve when energized and the other vents vacuum to the atmosphere when de-energized. The ECA controls the variable duty cycle of both valves.