Why does my 2007 Volkswagen G.T.I. not idle correctly when I am sitting still. on 2007 Volkswagen GTI

The tachometer jumps up and down while sitting still, from 10 to 30.

by in Marion, NC on April 02, 2013
2 answers
ANSWER by on April 02, 2013
review when last tuned. may be problem with ignition system. bring to shop for diagnostic to find out for sure.
ANSWER by on April 02, 2013
scan codes to see if there are any then post

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