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Author Topic: Mystery of the N75 valve  (Read 585 times)

Offline MKVASMR

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Mystery of the N75 valve
« on: June 14, 2024, 11:12:02 pm »
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

Offline MKVASMR

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Re: Mystery of the N75 valve
« Reply #1 on: June 15, 2024, 11:30:00 pm »
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
« Last Edit: June 16, 2024, 01:22:02 am by MKVASMR »

Offline MKVASMR

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Re: Mystery of the N75 valve
« Reply #2 on: June 16, 2024, 11:06:44 am »
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





Offline MKVASMR

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Re: Mystery of the N75 valve
« Reply #3 on: June 19, 2024, 08:42:22 am »
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 🙂

Offline mjmallia

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Re: Mystery of the N75 valve
« Reply #4 on: June 19, 2024, 09:03:03 am »
 :happy2:
Mike

South Coast

S3 8L ---- Golf Mk4 GT TDI ---- Lupo GTI ----  A4 B6 Sline ---- Golf Mk5 GTI