[s-cars] WGFV

[Theodore Chen]

Tom Green <trgreen at comcast.net> wrote:If you have access to a VAG-COM, the output test cycles the WGFV so you can hear/feel it operate, and you can  disconnect the vacuum line from the wastegate to also verify operation.

the output test is useful only if the WGFV fails the test.  i had problems with inconsistent low boost.  sometimes i got normal boost, and other times i just got wastegate spring pressure (about 6 psi).  the WGFV passed the output test.  after i tested a number of other things, i kept coming back to the WGFV, which passed the output test every time.  the output test actuates the WGFV about once every second, and i suspected that the WGFV was failing at higher duty cycles.  replacing the WGFV fixed the problem.

-teddy


 
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