Volkswagen Jetta Junkies banner

mk4 engine codes

  1. Jetta Troubleshooting
    engine idle revs high during cold start and continues while driving. tried cleaning maf (which is brand new), throttle body, plugs, and intake. works for a couple days then starts to rough idle again. Plugs are pretty black and only a couple months old. did a vag com today and got 10 codes for...
Top