Forums banner


  1. PO171 Vacuum Leak

    1.8 Liter Turbo
    I have had a check engine light on for years. It is a 2001 VW beetle GLX 1.8T, 50k miles. The car gives the PO171 code which is running lean everything indicated a vacuum leak. I have changed all the vacuum lines and the code keeps coming back. The car runs fine, doesn't run rough or stall. I...
  2. Cold air intake causing cel to come on

    1.8 Liter Turbo
    I just installed a k&n cold air inake on my 2002 1.8L turbo beetle. Now my check engine light is constantly coming on. It is throwing code po171 (system too lean, bank 1). I installed the enclosed small air breather on the secondary air pump hose end that disconnected from the stock airbox...