Excursion 4WD V10-6.8L (2002)
4. A MAP sensor is used to measure variations in manifold pressure as exhaust gas recirculation is introduced into the intake manifold.
Variations in EGR being used will correlate to the MAP signal (increasing EGR will increase manifold pressure values).
Hardware
Electric EGR Motor/Valve Assembly
Electric EGR
The electric EGR valve (Figure 92) and (Figure 93) is a water cooled motor/valve assembly. The motor is commanded to move in 52 discrete steps
as it acts directly on the the EGR valve. The position of the valve determines the rate of EGR. The built in spring works to close the valve (against
