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

[Dave Forgie]

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