Fuel pump replacement on 1985 4000S Quattro

[Tony Hoffman]

And you can verify this by simply jumpering across the "T" terminals
in the fuel pump relay socket. They are the two terminals across from
each other that form a "T". The fuel pump relay is the third towards
the rear of the car c.osest to the drivers side of the car. IOW,
standing on the side looking at it, closest to you, count three from
the front.

I usually run a second relay for the fuel pump itself, fed off the
fuel pump curciut. This takes the load off the (marginal at best) fuse
box. It is also fairly simple, email if you want further instructions.

Tony Hoffman


On 7/30/07, Ingo Rautenberg <ingo.rautenberg at gmail.com> wrote:
> Yes, it is, Rick.  It's under the tank just in front of the driver's
> side rear wheel.  You may want to spray some penetrant on all those
> pesky nuts and bolts, first.  Hope the tank is near empty - gotta
> catch that fuel, ya know. ;-)
>
> I would also first check to make sure your fuel pump relay (in
> fusebox under hood) isn't toast/marginal first.
>
> HTH
>
> Ingo
>
>
> On Jul 30, 2007, at 9:16 AM, quattro-request at audifans.com wrote:
>
> > From: "Rick Liotta" <FPL.Inc at alaska.net>
> > Date: July 29, 2007 7:39:54 PM GMT-04:00
> > To: <quattro at audifans.com>
> > Subject: Fuel pump replacement on 1985 4000S Quattro
> >
> >
> > My 85 Quattro 4000 seems to need a fuel pump.
> >
> > Fuel pump hum has been load now for about a year or 2.  This
> > morning the car started then died after a second.  Then crank,
> > crank, crank -- nothing.  In 5 minutes it starts and runs again for
> > a second then dies.  AND---  no more pump hum-- complete silence.
> >
> > Is replacing a fuel pump a job for a DoItYourSelfer?
> >
> > Thanks very much--- Rick
> >
>
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