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cylinder deactivation

  1. MDS System

    General Discussion on Issues / Trouble Shooting
    Has anyone had issues with the MDS system. My 05 300C runs rough at constant throttle but when you ever so slightly increase throttle, it smoths out. Happens at 30 mph through 70 mph. Thinking it may be an issue with cylinder deactivation. Thoughts? Thank you in advance. PS engine will...