Ok the middle resonance flap is sticking a little. How can I tell if this car has the updated engine control module. I would really like to rule out the $1200.00 repair
The other two are as smooth and free as i think they should be. I have not pulled the EGR valve to see if it works in it's full range and smoothly out of time
MBDOC thanks for the literature it has been very insightful.