Hi guys Audi a4 1.9tdi avf Been having issues where the car losses boost/power.had the maf,map and n75 valve replaced with the originals. following faults always showed up 17932 (p1524)..fuel pump relay 18027 (p1619)..glow plug relay 17957 (p1549) boost pressure (n75) 17996 (p1588) engine mount solenoid Aug 25, 2010 · Join Date Aug 25 2010 AZ Member # 63211 My Garage 2003 A4 1.8T FWD 5 speed Location Greenville, SC Mar 20, 2014 · you have a fault code for N75 open circuit. Thats not caused by a siezed dump valve, its caused by an open circuit on the N75. That can only be caused by two things. 1) a broken N75. 2) broken wiring. Dump valve is cheap and easy to replace, they're about £25 from the dealer (get the TT225 version as its stronger) But i doubt thats whats wrong Dec 31, 2003 · A4 (B5 Platform) Discussion - For the N75 duty cycle, what sort of numbers would be normal if I logged with a VAG-COM? - I logged block 114, the N75 duty cycle, and I'm getting numbers at about a max of 50% (this being for the fourth bank on that data block, the one which I think is the actual cycle) Jun 26, 2008 · N75 valve test. Logging duty cycle will tell you how hard the n75 is trying to open the wastegate, no need to risk damaging your engine, although that method is probably more fun. Can also log requested v actual boost. 2000 Audi A4 B5 1.8TQM AEB/06A. 1998 Audi A4 B5 4.2QM ( Thread) Jan 2, 2010 · PCV location on A4 1.8t 2003. On my A4 1.8T 2003 it is located under intake manifold towards back of the engine. You have to remove the coolant reservoir to see it. The first picture shows the opening where the PCV valve larger end (arrow) attaches, the second the PCV valve (arrow) and the pressure regulator valve for crankshaft housing .

audi a4 b5 n75 valve location