I have a 2011 Ford F-150 Super Crew Ecoboost V6, automatic transmission, with 70,500 miles. I was on the highway attempting to pass another vehicle when the engine started shuddering, I lost power and the check engine light flashed. Then the engine ran so rough that I could not accelerate at all because I was afraid I'd stall. I barely made it around the car I was passing. After a few minutes the check engine light came and any attempt to speed up beyond 60-65mph caused the engine to shake violently and the check engine light to flash. I limped home like this. What's happening?
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