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Where is the n75 solenoid?

Discussion in 'VW Mk3 Jetta, Passat TDI and other/older diesels' started by jon applespeed, Jun 5, 2007.

  1. My dealer told me that I needed to fix the n75 boost solenoid, what does this do?
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  2. chittychittybangbang

    chittychittybangbang Administrator

    Joined:
    May 23, 2007
    Messages:
    20,948
    Car:
    2006 Jetta TDI
    Location:
    CT
    The n75 boost solenoid is on the firewall above the brake booster. It controls the boost that the turbo puts out. Most of the time, it's not broken, it just needs cleaning with carb cleaner. The vacuum lines going to and from the solenoid can also crack and leak air. This would be a good time to clean the solenoid out and replace all of the vacuum lines as well.
  3. chittychittybangbang

    chittychittybangbang Administrator

    Joined:
    May 23, 2007
    Messages:
    20,948
    Car:
    2006 Jetta TDI
    Location:
    CT

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