Works when wants to A6

[Tony Hoffman]

Sounds more like a specific connection issue if the voltage to teh ECU is
going low. Check all the connections to the battery, then the ground from
there to the body to the engine(bellhousing bolt IIRC). Also, check the
battery connection to the starter, and the connections from the battery to
the fusebox.

HTH,
Tony

On Tue, Sep 4, 2012 at 8:38 AM, TonyEscobedo <TonyEscobedo at hotmail.com>wrote:

> Hello everyone,
>
> The patient is a 2001 A6 2.8 and the problem is that there isn't any fuel
> pumping from tank to injectors. I have 2 other A6's in the family so I
> swapped fuel pumps and fuel pump relays and checked fuse 28 already. The
> car still starts when it wants to.
>
> I've narrowed the problem down.. I think
>
> 1. I think its a ground wire. Can I just splice a wire to the ground wire
> that is on the fuel pump connector? Should this be done another way?
>
> 2. Vagcom says voltage too low on TCM sometimes and throws into safe mode.
> Is there a specific or different ground I should be cleaning and
> tightening. Can I just add one somewhere?
>
> Thanks for all your help.
>
> Tony
> 2002 a6 2.7T 6 speed manual
> 2001 a6 2.7T auto
> 2000 a6 2.8 auto