I believe all DPFE units have the same output.

You will want to first verify that the EVR is working. The EVR provides vacuum to the EGR valve.

Put a vacuum pump on the intake side port of the DPFE and use a meter to verify the following KOEO :


Pressure ---- Voltage
---0 PSI --- .45 volts
-.50 PSI --- .90 volts
1.00 PSI --- 1.40 volts
1.50 PSI --- 1.90 volts
2.00 PSI --- 2.40 volts
2.50 PSI --- 2.80 volts
3.00 PSI --- 3.30 volts
3.50 PSI --- 3.80 volts
4.00 PSI --- 4.25 volts
4.50 PSI --- 4.60 volts

The table is pressure across the ports, so since the exhaust manifold port is at one atmosphere use twice the inches of mercury on the intake side port.


"Those who cannot remember the past are condemned to repeat it" -George Santayana