Driving at road speed, cruise on, then accelerate. On downshift engine revs to 5k, then engine bucks and misfires. Foot off throttle engine runs smooth. Slow acceleration does not cause problem.
Check engine light flashes during malfunction, but does not set code. 3.5 Ecoboost Twin Turbo
What makes this problem better or worse?
Hard accel at road speed.
How long has your 2011 Lincoln MKS had this problem?
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