2010年4月14日 · The N75 valve controls the turbo wastegate actuator via directing air pressure to it by actuating a tiny solenoid when the ECU decides its neccesary. this solenoid can turn on and off VERY fast to keep the boost at the proper constant. basically it prevents overboost electronically instead of relying on a set tension spring on your wastegate.

2009年11月25日 · Basically, the N75 is just an electronic regulator. Vacuum and boost goes through it to open or close the wastegate. It is known to fail, not commonly, but it happens. I would say it is a fairly easy replacement, but quite tricky to get to. It is possible what you think is happening could be the case. Have you dont any logs of your N75 to confirm?

2022年3月19日 · I came across a post on elsewhere where someone was very frustrated about replacing the N75 valve on our cars. Since I don't see anything someplace else that specifically covers the MK6 2.0T, I figured I would share. This valve is the one responsible for opening and closing the wastegate of the turbo.

2010年5月14日 · the n75 is a bitch to remove and replaced on the GTI. it's doable with the turbo on the car, but most people swap them with the turbo out. look for cracks in the casing, these would be unlikely. more importantly, look for cracks in the vacuum lines.

2024年6月17日 · Still trying to work out my p0299 on my mk5 gti without replacing turbo. Replaced brake booster hoses since brakes were also soft, but still under boosting. Car won’t make more than 6-7 psi when code is cleared. Using obd11 I noticed I’m not getting reading from n75 valve so gonna replace it and see.

Controls the boost pressure on turbocharger systems.

2007年3月30日 · The N75 valve is inserted between the turbo's high pressure output and the wastegate. If the turbo would directly linked to the wastegate, it would not be able to produce lets say more than 0.3-0.4 bar of boost, because it would shut itself down immediately.

2019年7月13日 · The N75 valve is vital to the health of your turbocharged engine, it controls when and how far to open the wastegate to allow boost pressure to be released. Diagnosing a broken wastegate frequency control valve can be difficult, but a common symptom is a lack of boost pressure with no boost leak present in the system.

2009年3月9日 · If the Forge N75 had failed you'd have similar symptoms but how will you know - or do you just say fcuk it, buy both and hope for the best??

2024年6月14日 · 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.