Sweet!  Now he can make the next vanagon outing!

Abel
On Mar 1, 2015 3:53 PM, "Kevin Duvernay" <kduvey@gmail.com> wrote:

> ding ding ding and the inner is: Mark.
>
> Thank you Mark. It was in fact the O2 sensor ground wire (green slightly
> larger gauge wire). Someone had mistakenly plugged it into the unused spade
> connector on the bottom of the coil because it was just sitting there
> unplugged while the O2 sensor was out. Unplugged it from the coil and it
> runs beautifully now. The new O2 sensor also seems to have solved the
> running rich problem.
>
> Should have consulted the list before spending many hours swapping out so
> many parts...
>
> On Fri, Feb 27, 2015 at 5:05 PM, mark drillock <mdrillock@cox.net> wrote:
>
> > This sounds like it could be related to the oxygen sensor circuit. When
> > the engine is cold the ECU ignores the O2 sensor. Once the engine warms
> up
> > to a certain point the ECU then tries to use the O2 sensor reading as a
> > basis for adjusting the fuel mixture. It has a lot of leeway in trying to
> > adjust it and can easily adjust it so far that the engine stops running.
> > When you turn the key off and then start the engine again the ECU again
> > ignores the O2 sensor but only briefly. So with an already warmed up
> engine
> > restarting clears the O2 sensor circuit for a short while each time.
> With a
> > cold engine the O2 circuit is inactive until the engine warms up.
> >
> > If it is related to the O2 sensor circuit it could be the sensor, the
> > wiring to the sensor, or the reference ground wire the ECU uses when
> trying
> > to read the sensor. The reference ground wire is the brown wire that
> comes
> > out of the small bundle that goes to the distributor connector. People
> see
> > this brown wire and assume it has to do with the distributor but no, it
> is
> > for the ECU O2 circuit. It needs to connect to engine metal and needs a
> > clean connection and no other ground wires should share that connection.
> >
> > Mark
> >
> > Kevin Duvernay wrote:
> >
> >> I do have a spare brand new temp II sensor, we'll try tossing it in.
> easy
> >> enough. I suppose it make sense, it actually does seem to run good for
> >> several more minutes if its started cold...?
> >>
> >> On Fri, Feb 27, 2015 at 4:28 PM, Jim Felder <jim.felder@gmail.com>
> wrote:
> >>
> >>
> >>>
>