If you do find it is the DPFE try getting one at discount (one of the sources that are mentioned on this site. I got one at cost $34.39 instead standard retail $75. From the same dealer only got a cousin with transmission shop, has an account. Get the new updated version Plastic F77Z-9J460-AB, it supposed to last long. This DPFE is a fun one the catch, even with shop CD and OBD II tool.
Paul
since you've got P0402 EGR flow at idle check the EGR solenoid, not only does it turn the vaccum on to operate the EGR the tiny filter inside allows the vaccum that EGR was operated with to vent. Even possible small piece of carbon holding the egr open slightly, however don't recall anyone actually saying that they found that.
It mine about six months of intermitents before the DPFE finally totally died. I even had 0401 & 0402 set at the same time once. insuffiecent & excessive
Last edited by F111D F; 07/01/03 01:11 AM.
