Hi need some assistance from the old school Benz techs. This sl came in with a surge at cruise speed its similar to a lean miss you hear the engine running rough only at [...] under no load on level surface. If you decelerate or accelerate at all it goes away ...

FIX posted 8/4/2015

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle