"Bob" > wrote in message
...
>
> "TranSurgeon" > wrote in message
> news:wwfNd.50961$EG1.30974@attbi_s53...
> >
> > "Bob" > wrote in message
> > ...
> >>
> >> "Lawrence Glickman" > wrote in message
> >> ...
> >> > On 5 Feb 2005 12:18:43 -0800, wrote:
> >> >
> >> >>I think that is what I will try now. I just replaced my
exaust/convert
> >> >>from the O2 sensor back and it did not help.
> >> >>
> >> >>This is getting expensive
> >> >
> >> > The only way I know of monitoring your fuel pressure "while you are
> >> > driving around" is to have somebody plugged into your OBDII connector
> >> > with a real-time scanner, OR, use a data logger ( e.g. Davis
> >> > DriveRight CarChip, or record on a portable PC with a program like
> >> > AutoTap ).
> >>
> >> Nice guess Larry but since his PCM has absolutely no clue what the fuel
> >> pressure is, your data logger won't work. It may be able to moniter
> > several
> >> things but fuel pressure isn't among them.
> >> Bob
> >
> > not directly, but here's a thought:
> >
> > I get a LOT of GM trucks with a 'no 4th gear' complaint
> >
> > if you drive it just right, it WILL go into 4th............but the
problem
> > is plugged fuel filter, thus more throttle pressure, thus ECM keeps it
in
> > third
> >
> > SO:
> >
> > do what I do to demonstrate to the customer where the problem
> > is...............monitor O2 sensors + injector pulse width
> >
> > if you see O2 going lean and at the same time the IPW is getting longer
> > and
> > longer, you have a fuel delivery problem.............filter or pump
> >
> > just a thought
> >
> > G
> >
> That's true enough Gary, but it still doesn't change the fact that
Glickman
> is full of ****.... yet again.... The PCM doesn't have a clue what the
fuel
> pressure is.

oh, I know

I just thought it might help somebody else.........some one who's not
suffering from 'cranio-rectitis'



> It may think the engine is lean due to the feedback it gets
> from the O2 sensors and increase the fuel trim to compensate. But it still
> doesn't know if the problem is fuel pressure, a bad sensor, or something
> else. It just knows it is having to add fuel to get an O2 response and
will
> set a code if it reaches a certain limit.
> Bob
>
>