C5 Allroad Fuel problem

[jcb]

I am about to look at an 04 2.5 A6 allroad

apparently the owner says there is a problem with the secondary pump or lift pump or the pump that feeds the main pump (any of that make sense!)

I am assuming its is an in tank pump, havent found a schematic yet but does anyone have any experience of this?
easy job?

 

[TYphoon GB]

The lift pump does little more than move fuel over the tank baffles.
If its a fueling issue its likely to be the main VP44 pump...
Look for 00550 fault codes. You will find a few posts on here...
No cheap solution......
Just my 10p worth....

 

[adamss24]

As above, most likely a dead injector pump, if it's cheap go for it and have the pump rebuilt...

 

[jcb]

apparently drives fine but won't go if fuel drops past 1/2 tank..

 

[TYphoon GB]

Ok could be lucky but I suggest a scan to be sure.

 

[adamss24]

Then you need to change one of the pumps that transfer fuel from one side to the other...

 

[TYphoon GB]

If you need more details just ask...

 

[jcb]

all sorted
picked up a different allroad!

lovely one too!