On my 2011 ford f150 when i get between 40 to 45 miles an hour my truck bucks and shimies why

Asked by migration_john35722 Jan 28, 2013 at 06:55 PM about the 2011 Ford F-150 XLT SuperCab

Question type: Maintenance & Repair

4 Answers
95

Robert answered 11 years ago

Your truck is miss firing check your plugs, distributor, or fuel injecters

Mark helpful
48,625

kbro answered 11 years ago

If your truck has the 3.5 ecoboost you probably have a problem with the intercooler they have a updated design to help with the build up of water causing a misfire. Its usually under hard accel but it could do it anytime. And seeing how a 2011 f150 does not have a distributor its not that. I havent seen any injector problems on 2011's if your close to 100k miles your could need a tune up. Ignitoin coils are known to go bad it has one per cylinder. But knowing the motor and how many miles would help

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75

Rick answered 11 years ago

my truck did that same thing 1 of my coil packs was bad changed it all ok now

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