Checking the N75 valve
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AudiWorld Member
Joined: Sep 2004
Posts: 565
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Checking the N75 valve
I just checked my N75 valve and got a ohm reading of 29.8. Which is in spec for both a N75 C and F.
Does this mean that my N75 valve is fine or could there still be something wrong with it? And if there could still be something wrong with it how else can it be tested?<ul><li><a href="https://forums.audiworld.com/a4/msgs/2166363.phtml">ohm values for various N75 valves</a></li></ul>
Does this mean that my N75 valve is fine or could there still be something wrong with it? And if there could still be something wrong with it how else can it be tested?<ul><li><a href="https://forums.audiworld.com/a4/msgs/2166363.phtml">ohm values for various N75 valves</a></li></ul>
Junior Member
Joined: Jan 2006
Posts: 386
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if you have access to a VAG-Com
you can log block 114 and watch your wastegate cycle. Mine would flop open to 99.6% as soon as I went under boost with a bad n75. After I switched to a new one my wastegate would respond normally. Hope this helps
Junior Member
Joined: Jan 2006
Posts: 386
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previously I had done a leak down test and didn't find and leaks.....
yet my duty cycle still was reading terrible. From my searches the two suspects were a pooched turbo or the N75. I took a gamble on changing out the N75 and it seemed to have solved my problems. Give it a try, the N75 is relatively cheap. Hope you have the same luck.
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