Mar 25, 2018 · Hi everyone is there anyway to check if I have a bad n75 valve on a 1.8t apu engine code cheers Jan 8, 2020 · Hi, i have a b5 audi a4 5 speed manual and i am stuck on what is exactly wrong. The engine turns over just fine and runs smoothly but it wont move under its own power. It goes in gear but when i let go of the clutch theres no grab and there is a loud knocking sound along with it in every gear. Jul 7, 2009 · S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002 What is the N75 Valve? The N75 valve is a fundamental part of controlling boost on a 1.8T engine. Its a small electronic solenoid valve that the ECU regulates to control how much boost the turbo has to create. The value that many logging tools show is the ‘duty cycle’ which is what the ECU is requesting the valve controls the turbo to make Put a vacuum gauge to the VAC OUT port, start the car, run basic setting 11 or N75 output test, see how much vacuum it puts out. When it switches to "off" it should be 0 vacuum. When it switches to "on," it should be the same amount of vacuum the rest of the system has (which in your case sounds like about 20" mg. May 14, 2008 · Re: How to tell when your Diverter Valve fails. Originally Posted by ecbo0m. You can also test the DV manually by taking it out first. Push the piston down with a socket while covering the vacuum nib with your finger. Remove the socket, and the piston should stay in the up position until you remove your finger. 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) gJ3w.

audi a4 b5 n75 valve location