I've been battling this issue for months. Finally made the dealership lend my a mechanic and the ford laptop. So plugged the laptop in and brought the tech for a ride. The whole left side of my motor misfires severely under heavy acceleration all three cylinders. It's recorded on the laptop and they still can't fix it. They've done plugs, wires, condensation tsb and now they've ordered all new coils for that side. Mileage has been terrible. Lucky to get 15mpg on the highway. Stomp on the throttle and it shutters, bucks and sometimes falls flat. Never sets a light and doesn't store half of the misfires. That's why I made them lend me a tech. I have a 2011 Eco boost and am really starting to lose faith. Anyone had the same issues and any fix for this? Also my truck smoke pretty good black on cold start for several minutes and my exhaust tip is severely black with soot. Is this normal?
Berlinfire1979
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11 Posts
I had the same shuddering issue with my 2011. Driving down the highway it didn't want to go past 2k rpm. Took it to the dealer. They hooked it up to their computer. Seemed like a misfire that jumped around thru all different cylinders. They called Ford for help. They were told to diagnose a different way and found it was a burnt coil and plug in the #1 cylinder. They replaced them under warranty and I have not had any problems since.
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