Dynasty L4-153 2.5L SOHC VIN K TBI (1992)
Electric EGR Transducer: Description and Operation
Non-California Emissions
Vacuum Control Solenoid Valve
EGR Mounting
Electric EGR Transducer (EET)
Note:
The EET assembly is a vacuum control solenoid valve and a backpressure transducer, in one package.
Purpose
The PCM controls when the EGR valve can be actuated, through the Vacuum Control Solenoid Valve portion of the EET.
OPERATION
Ported vacuum from the throttle body, is supplied to the Solenoid Valve.
The PCM controls the flow of vacuum between the throttle body and the back pressure transducer, (through the solenoid valve ground circuit).
^ When the solenoid is energized (grounded), no vacuum is supplied to the transducer.
^ When the solenoid is de-energized (not grounded), vacuum is supplied to the transducer.
The solenoid will always be energized (no EGR), under following conditions:
^ Engine warm-up, (engine coolant temperature below 40 °F)
^ Engine at idle
^ Wide Open Throttle (WOT) operation
^ Rapid acceleration/deceleration
^ During EGR system diagnostic check
Note:
If the wiring or connector is disconnected from the solenoid, the EGR valve will operate at all times, (adversely affecting engine idle and
performance).
