2003 Audi A4 (B6 Quattro) 1.9TDi 6 speed gearbox.
Hi, I'm looking for some mechanically minded people to help solve a problem with my car
that no mechanic yet has figured out.

Some months ago whilst driving the engine suddenly stopped, no warning lights appeared on dash
and it took me half an hour before it would restart but only drove for 500 metres before stopping again.

I brought it to a garage and had full service with filter changed but the problem persisted.
I then had an electric fuel pump changed, then map sensor, then injectors cleaned & tried a different ECU...
but problem persists and I don't know what to do, I love this car as it's a rare model (in Ireland) with sports suspension and
would rather fix it than scrap it...really hoping someone can help.

Thanks
Marcus.