engine light on dashboard , misfire on idle. on 2005 Audi A6 Quattro

my a6 2005 , is running very smoth when driving , but on idle and at starting , I feel cuts, and almost wants to turn off ? I chages the spark plugs , the problem remains. what are the possibilities , is it an engine problem ?

by in Churubusco, NY on May 29, 2013
1 answer
ANSWER by on May 29, 2013
scan codes and post so we can adv