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How to clean N75 valve

dany2k Jan 10, 2011

  1. dany2k

    dany2k Member

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    Hi all,
    Can anybody point me in the direction of where the N75 valve is (with a picture if possible) and how to go about giving it a clean... eletrical contact cleaner the thing I need? I've got a couple of days of work and this is just about the only thing wrong with her at the moment, and may as well give it a go :)

    Danny
     
  2. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    ermmm... why do you need to clean it may I ask?

    <tuffty/>
     
  3. dany2k

    dany2k Member

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    a bright spark suggested it a couple of posts ago :) nothing to lose, probably needs replacing really but give it a clean if i can!
     
  4. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    What problem is it you have that means you have to do this? when they don't work they tend to throw a code or drop boost to actuator level...

    <tuffty/>
     
  5. Welly

    Welly VX220 SC Driver :)

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    If it's not broken, don't fix it....
     
  6. dany2k

    dany2k Member

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    i'll fill u in mateys, so u dont think im just a madman deciding to clean his n75 just because he's bored :)

    on the 0-30 sprint i feel a slight 1/2 second worth of hesitation: enough of a hesitation for *insert random boy racer car* to gain a decent foothold.

    vagcom flagged up something that pointed towards the n75 valve too: 17963 charge pressure maximum limit exceeded

    it also flagged up something else recently which hasnt come back yet: something relating to the pre-cat o2 lambda sensor.

    any ideas..?
     
  7. hades-

    hades- Well-Known Member VCDS Map User

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    i doubt you can clean them
    just buy a new 1 if needed
     
  8. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    Check pipes for leaks would be the first thing then get the actuator tested for opening pressure... a boost gauge would be useful to check what boost there is to trip this as would a few logging runs with VAGCOM...

    Not entirely convinced the N75 is at fault here tbh... N75 issues are usually accompanied with N75 fault codes... a new valve is around the £50 mark, expensive if thats not the prob... do you have access to VAGCOM?

    <tuffty/>
     
  9. dany2k

    dany2k Member

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    uv got a point re. the new valve: if im being honest, i changed the MAF in similar circumstances :-( i do have access to vagcom, what should i be looking for? could the lambda sensor fault point to something?
     
  10. Welly

    Welly VX220 SC Driver :)

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    Normally the Lambda...
     
  11. quattro1

    quattro1 Member

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    heres the n75 mate, check all pipes going to and from it for splits :thumbsup:

    [​IMG]
     
  12. dany2k

    dany2k Member

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    cheers matey, much appreciated! i'll have a look when the sun rises :) oh... and very nice and clean engine bay btw well done!
     
  13. quattro1

    quattro1 Member

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    sadly not my bay :( lol mine doesnt look too disalike though!!! :laugh:

    ;)
     
  14. deano8406

    deano8406 New Member

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    where would the best place be to get a new n75?
     
  15. thegoal007

    thegoal007 Another S3 owner....

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    tps.
     

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