[s-cars] Fuel Pumps: Was- Car stalled in fast lane last night...

[Joe Pizzimenti]

Did you check/replace the regulator?  Could be that it's not riging
with boost pressure causing a lean condition on the top end of the
cylinder pressure scale?

Or I could just be full of shit.


On Sat, 27 Nov 2004 10:29:12 -0800, Dave Forgie <forgied at direct.ca> wrote:
> JFB:  Very, very curious.  In previous posts I have contended that the recent
> replacement fuel pumps are not up to the flow and/or pressure capacity of the
> original fuel pumps.  I am basing this "theory" on the conventional wisdom that
> the original pumps were generally capable of supplying both the flow and pressure
> required for an RS2-based upgrade "up to 400 hp".  I had my original VDO pump
> replaced (make unknown) at a dealership 20 months ago (due to failure on a road
> trip). Since then I upgraded (finally) to RS2 standards and have experienced
> periodic high boost lean out (pinging).  I have not confirmed that it is the pump
> (could also be a restriction in the fuel line after the KY recall work) but it is
> curious that you are suggesting similar lean out symptoms.  Hmmmm.....
> 
> Dave F.
> 
> The Rogue wrote:
> 
> > Dave Forgie wrote:
> >
> > >Jeez.  I said the fuel pump was my FIRST choice for the cause.  The CPS is a
> > >possibility.  I know it NORMALLY fails slowly and mostly on a restart.
> > >HOWEVER, it could potentially fail dramatically.
> > >
> > >If the fuel pump theory does not pull through, then the next candidate (in my
> > >mind) is the CPS. I guess we will find out in the next day or so.
> > >
> > >Dave F.
> > >
> > >
> >
> > Thanks to all for the input but Dave was right!   The pump was at fault.
> > I got it back on the road Friday but now it seems to be a bit leaner
> > when the turbo kicks in....could the injectors have been damaged by
> > running dry?
> >
> > JFB
> > 93 S4
> 
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
>