I have a A4 1.9 TDI Quattro 2002(90,000mls) that wont start. Had LP fuel pump fitted in the rear tank last year (was having same starting problems before pump was fitted) and have been told that the HP pump is now at fault. Both starting problems was during a very cold spell of weather. Is it possible that it just might be water in the system or a blocked fuel filter/ dirty fuel/injector etc. Had filter fitted about 18 months ago and have put about 10,000 miles on the clock since both filter and LP pump were fitted. Could this be an electrical fault?
No warning light on display. How common is it for 2 pumps to fail within a year of each other. Is it a common problem with the A4 tdi and vw passat engine.Was there ever a recall on these components? Hope its something simple cause new HP pump is quite expensive.