All Things Mk5 > How to Guides / Troubleshooting

Mystery of the N75 valve

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MKVASMR:
Hi guys so after almost three months of battling I still haven’t found any solutions to my issue. During the loggs the car doesn’t boost more than 7psi and the N75 doesn’t budge off of 0%. I changed two n75 valves. The ohm readings on both were 25Ohms. The voltage on between the two wires while the car is running is 10.8V. What could cause this? I have one more thing I noticed. The throttle position (potentiometer) also stays at 0. However I don’t get any codes except the p0299 one

MKVASMR:
It ended up being the diagnostic tool not reading the n75.
I did some logging and I’m still kind of bummed 🙁. I’m hopping someone can tell me something based on the loggs.

https://file.io/c2SZSMa4HS7t
https://file.io/BWgwUUZbcRO2

I don’t really know how to transfer them to charts so csv is the best I can do.
2, 3 and 4th gear full throttle

MKVASMR:
I did a couple of more loggs with the apr website guidance. Hope it means something.

Boost/Timing
https://file.io/erYRmx74MSmG

MAF/Load
https://file.io/shFN8PnErL6H

Boost/Fueling
https://file.io/4KRULznIdLws

MKVASMR:
For anyone wondering what was the issue.
It was the frickin oil dipstick! It was broken and the oring was missing, hence drawing vacuum! Hope this helps someone 🙂

mjmallia:
 :happy2:

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