On Sep 13, 2:10*am, wrote:
> On Sep 11, 9:30 am, Mark > wrote:
>
>
>
>
>
> > On Sep 10, 9:06 pm, wrote:
>
> > > On Sep 9, 1:06 pm, George > wrote:
>
> > > > On Wed, 3 Sep 2008 21:12:18 -0700 (PDT), wrote:
> > > > >This car is a3.1v6 it runs ok most of the time. But randomly out of
> > > > >nowhere it will bog and stall when you push the gas pedal. ...
>
> > > > I may have missed it, but did you look at the MAF? *I saw sort of the
> > > > same thing on an 80's Buick, though (IIRC) it happened more on hills.
> > > > (Loading, all the same.)
>
> > > > G
>
> > > Car has no MAF, but i did check the MAP sensor
>
> > I think that to solve this, *one way or another, you you are going to
> > have to monitor the pulses from the ECM to the injectors. *It can be
> > done safely if you don't short any wires together or to ground.
>
> > Is this car multi-port injectors or single injector throttle body?
>
> > Mark
>
> Ok, how do i go about checking the injectors exactly? I checked and
> had 12v, to one wire but i don't understand how to find out how the
> pulses are changing as you push the gas... It is multi-port injectors,
> so they are really hard to check under the plenum. The only other way
> i know to check them is to use a light and that will not show the
> changes you speak of it will just show that it is firing the injector
> right?- Hide quoted text -
>
> - Show quoted text -

are you still working this problem?

I think the brightness of the light will give you an indication of
changes of the pulses...

If you step on the gas I would think the light needs to get brighter..

Also I think at this point you can troubleshoot your problem with one
light connected to one injector... we are not checking the injector
itself but instead we are checking the signals that the ECM is sending
to the injectors... so far we havew no reason to think that the ECM
is sending the wrong signal to only one injector, so checking any one
should be the same as the others...

Mark