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I'm probably not going to be able to give you a proper diagnosis without knowing which codes are setting the check engine light. There are about 300 problems that can set the light. Most common thing for your vehicle with not running bad is what they call the DPFE (differential pressure feedback) sensor. It's basically a vacuum/pressure monitor for the EGR system and they get stopped up or corrode as they have exhaust gases running through them and are made from aluminum or plastic. If you post code numbers (go to advance or autozone and they will read them for free) and I can give you a better idea of what the problem is.
Has the Fuel filter been changed? Clean the MAF the IAC and seafoam the intake. These things would be cheap to do first. Does it feel like a misfire? If so Id look into testing the coils Might need new plugs.
Assuming has a 5.4 liter eng. and the complaint is more of a shaking engine. these vehicles are notorious for bad ignition coils... coil over plug design.. problem is ther are 8 of them Hmm which one.. have the engine scanned and to find out which cyl. is missfiring then replace the coil(s)
Sounds like one of the coil over plugs have gone bad. this will cause mis-fire which causes your car to sputter, skip, and shake. It can be changed easily when finding out which one it is. But rather expensive for a simple part $40+ each.
Call your local Ford dealer and see if there is a recall on getting this done. If not, explain to them what happened and see if they have a remedy for it that won't be too expensive.
stickingvalves collapsed lifters bent push rods fault ignition or damadged spark plug wires start it up at night look under the hood for sparks jumping from wires replace fauilty wires
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