Sundance Duster L4-153 2.5L SOHC VIN K TBI (1993)
EGR Backpressure Transducer: Description and Operation
Backpressure Transducer Operation
EGR Mounting
Electric EGR Transducer (EET)
NOTE: The EET assembly is a vacuum control solenoid and a backpressure transducer, in one package.
PURPOSE
When the solenoid is de-energized the transducer varies the amount of vacuum routed to the EGR valve control nipple, (depending on engine load
conditions).
OPERATION
Transducer is supplied ported vacuum through the solenoid.
Transducer is a variable vacuum bleed valve, controlled by exhaust backpressure.
-
When there is no exhaust backpressure, the vacuum bleed valve is completely open, and no vacuum is applied to the EGR valve.
-
When exhaust backpressure is great enough, it closes the vacuum bleed valve completely, and maximum vacuum is applied to the EGR valve.
-
When exhaust backpressure is present, but not great enough to close the vacuum bleed valve completely, the vacuum applied to the EGR valve
varies with the backpressure.
