[Paul Scanzillo]

Thanks for your help. I've located all the parts you mentioned. I traced the green vacuum line from the EGR down to the EGR Vacuum Regulator Solenoid. It looks like this is the solenoid that the PCM signals to open to allow vacuum to the EGR? The Solenoid has the green vacuum line and a red vacuum line connected to it. I plugged the end of the green (EGR) line and blew into the other end...no leaks.

Is there a way to check for a bad EGR vacuum regulator solenoid or do these generally not present a problem?

I suppose the next step is to replace the DPFE and see if this corrects the problem or try cleaning the ports first?

Thanks again!