'96 A6 Quattro fuel pump
kevins9 at cox.net
Sun Dec 16 17:43:49 PST 2007
Thanks again for the input.
I ended up doing some more probing, and it seems that the larger guage
brown wire at the fuel pump connector is ground, and then one of the
other 3 wires is 12v constant (when key is on), and the other is 12v
just for that brief moment, probably for as you said, to build up
pressure in the lines. It now looks like I just have a bad pump, and
need to replace it. AutoZone has them in stock locally for $238, but not
sure of the quality, or if that is a reasonable price. I think I found
one for $136 online the other day, but forgot to bookmark the site.
If anyone has suggestions of a good source for the fuel pump please let
Grant Lenahan wrote:
> I dont know exactly how it works, but I do know that the effect is
> much like what you say.
> It goes on, then turns off. I believe this may be related to building
> up pressure then turning off until the motor is running.
> I do find that audis ( all of them) start better if you turn the key,
> wait, then engage the starter. This builds pressure and fuel, I presume.
> I have not traced wires nor watched the 12v feed go on and off.
> Maybe on a day that cable goes out.....
More information about the quattro