A6 1.9tdi loss off boost/power @ 70mph ish
A problem has started to occur on my 1998 A6 1.9 TDi, when i'm on full throttle at about 70ish the boost goes and it's asiff it goes in to limp mode or something and will not boost up and pull like it did.
I've checked for loose vacuum piping as this usually causes the tubo to stop spooling up but everything is fine it seems, and i regain normal power and boost if i simply switch off and re-start the engine and all is fine until i boot it again at speed.
is it the maf?, i don't have access to a vag-com thing but i'm sure it would throw up something anyone local to the bristol/somerset area who could help.
Many thanks, jack