2006 6.0L Hesitation
Having major problem with driving on highway. First time owner and operator of a diesel truck. At speeds of 100km/h - 120km/h with throttle just tipping in and RPM's at or about 1000-1300rpm the vehicle starts to hesitate, bucks and vibrates causing entire vehicle to shake. As soon as I step into the throttle and turbo really kicks the problem mostly stops. Only seems to happen on the highway. Tried new tank of diesel, new fuel filters, added cetane and performance booster and added new air filter. Nothing has worked. Checked for codes and none were present and no engine check light on as of yet. Any ideas would be great.