B250 3/4 Ton Van V8-318 5.2L VIN T FI (1992)
This solenoid is controlled by the engine controller. The engine controller monitors engine coolant temperature and other operating conditions to
determine when to energize the EGR solenoid. When the engine controller supplies a ground to the solenoid (energizing), vacuum is cut off from
the EGR transducer. When the engine controller removes the ground from the solenoid (de-energizing), vacuum is allowed to flow through the
solenoid and out to the EGR transducer.
Non-California Emissions
EGR Mounting
CONTROL VALVE AND TRANSDUCER
The EGR system used is a backpressure type. A backpressure transducer measures the amount of exhaust gas backpressure on the exhaust side of
the EGR valve and it varies the amount of vacuum supplied to the EGR valve. The transducer uses this backpressure signal to supply the correct
amount of vacuum to the EGR valve depending on engine load conditions. Vacuum is supplied to the backpressure transducer by a ported vacuum
signal from the throttle body.
Solenoid Trio
EGR SOLENOID
This solenoid is controlled by the engine controller. The engine controller monitors engine coolant temperature and other operating conditions to
determine when to energize the EGR solenoid. When the engine controller supplies a ground to the solenoid (energizing), vacuum is cut off from
the EGR transducer. When the engine controller removes the ground from the solenoid (de-energizing), vacuum is allowed to flow through the
solenoid and out to the EGR transducer.
