Re: Code P0401 Insufficient Exhaust Gas Flow
Thanx, Bob... there's lot's of times I come across sounding like a real
dick....truth of the matter is.... I'm a real dick. Just doing my part to
show that all techs aren't stupid nor thieves...
"Bob" <firstname.lastname@example.org> wrote in message
> It's good to have you here helping out with these types of problems, Jim.
> "Jim Warman" <email@example.com> wrote in message
> > Usual culprit is DPFE... don't stick your finger over the vacuum hose
> > checking for vacuum... you're going to feel a "nibble" because the EVRV
> > duty cycled. Not sure how you are checking the electrical side of the
> > EVRV... these have 12 volts supplied as long as the key is on... PCM
> > switches the ground side of the solenoid.
> > "Spud Unger" <firstname.lastname@example.org> wrote in message
> > news:sP0Ae.email@example.com...
> >> I have 96 explorer 4wd 4.0 engine with 70k miles. hastily replaced egr
> >> valve and reset code but code came back after 2nd start. getting very
> >> week vacuum at the vacuum supply hose (less than 1" i believe). zero
> >> voltage read at EVR Solenoid power supply but i'm not sure if i should
> >> be getting 12v signal with engine hot and normal idle. supplying 12 vdc
> >> doesnt seem to affect airflow through solenoid. any advice would be
> >> appreciated. TIA