hi i have an audi a4 afn 1.9 tdi 110 bhp red eye 1998 with the usual power issues uphill wont go above 3000 rpm have tried maf changed needle lift sensor as fault code came up also pedal sensor coz code came up now have been told the diesel pump is faulty thats why i am having these problems also been told that red eyes have differrent pumps can any one help out as its drivin me mad