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Anyone tried a different n75 valve on there cars

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  • ronaldvossen
    replied
    I bought a new one from tradition just a couple of weeks ago.

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  • s0_big
    replied
    If anyone is searching for new ones: https://www.autewo.de/034906283k-neu...taktventil/n75

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  • B5NUT
    replied
    Originally posted by Mikes2 View Post
    If the car has ever been to superchips, it was common to see this disconnected
    I called superchips but they could not help. The company went bust last year, and they have been bought out. The new owners have dropped all of there franchise and they now only have records of remaps for the last 12 months. They also don't remap the S2 anymore.

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  • B5NUT
    replied
    So I've not tested the N75 yet but not sure there is much point. As shown in the picture below there is a crack in the housing, and it's not holding air or vacuum, so I guess it replacement time.

    Also connecting the plug to the N75 valve clears the fault code, so I know it's not a wiring fault, there must be vacuum leaks in the system or it's just at the point below.

    n75 leak.jpg
    Last edited by B5NUT; 14 October 2021, 12:50.

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  • B5NUT
    replied
    What will that achieve on the S2 more power? From the few sites I've read about unplugging the n75 valve it will limit the boost but could help if you have a vacuum leak.
    Last edited by B5NUT; 14 October 2021, 10:25.

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  • Mikes2
    replied
    If the car has ever been to superchips, it was common to see this disconnected

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  • B5NUT
    replied
    So I now know why I'm getting the error code. It's not plugged in..

    N75.jpg

    Found the cable pushed into the headlight behind the black cover.

    N75cable.jpg

    So why the hell would you unplug the valve unless it faulty?

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  • Tractor Dave
    replied
    I think Bertman had a couple for sale recently

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  • andyg plym
    replied
    Had a few issues with mine recently where it was sticking causing problems tried a cheap Chinese £10 special and a waste of time. In the end got a genuine new one from a forum member but did find Quattro corner also sells them

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  • B5NUT
    replied
    Originally posted by Mikes2 View Post
    I don't think you'll find this valve in the other cars you mention. It's a wgfv so you certainly won't find it on an ADR engine which is not a turbo engine. It can be tested using Vag Com / VCDS in the output tests. I've seen a broken wiring loom causing this fault - it sits behind the right side headlamp so easy to check.
    Your right. I'm looking at the wrong valve, it's this part number 034906283K

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  • newsh
    replied
    N75 is 034906283 I think

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  • Monkeymagic
    replied
    As stated above an output test will see if the valve is clicking away..on my mates ABY it was down to crudded up earth or the connection to the oil pressure sender I can't remember exactly

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  • Mikes2
    replied
    034 133 517 ? That's a carbon canister N80 valve. Not the part being referred to here.

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  • newsh
    replied
    Quick test for the valve, engine at idle reach down behind headlight and place fingers on valve, quickly give throttle a big blip, you should feel the valve clicking.
    When I got my first coupe back in ‘02? the valve was partly unplugged, was a nice surprise when properly plugged in.
    Last edited by newsh; 13 October 2021, 23:23.

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  • B5NUT
    replied
    Yes, cleared the codes and this one came back. I've got a 1.8T (AEB) n75 in front of me purchased it by mistake as the numbers between the two engines are the same it's jus the AEB version also has a letter on the end. The problem with the AEB valve is it has a newer 2 pin plug on it, and don't want to start cutting into the car harness for something that may not work. At least I know the ADR version uses the same plug.

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