2015 F150 ecoboost sputtering during heavy acceleration
#21

If you were local I’d have a tech scan it for you for free.
However most dealers including ourselves will waive the diagnostic fee for you if you do the repairs with us. The things mentioned so far aren’t that expensive to have done. Good luck
However most dealers including ourselves will waive the diagnostic fee for you if you do the repairs with us. The things mentioned so far aren’t that expensive to have done. Good luck
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#22
Admirals Club 


Its going to be the throttle body or the spark plugs. My guess is the plugs. Ecoboosts have a tendency to open the gap on the plugs with relatively low miles. I wouldn't waste money taking it to the dealer. Spend the 50 bucks and 30 minutes and change the plugs and see if the problem goes away.
#23
Admirals Club 


I would get forscan and an adapter for the odb2 port. You can read codes and change lots of cool parameters.
#26
Senior Member

They were known for spark plugs issues with your same symptoms. And they are due anyways.
#27
Senior Member

Definitely spark plugs, I just changed mine and was having the same issue intermittently. It was worse when the engine was just coming up to temp. This is because the ecm enriches the fuel mixture until at full operating temperature. I regapped the plugs at 20k because the first few years were gapped at .050” which is huge for a turbo motor. Now they come at .032”. Looking at my old plugs (70k) the ground strap had a pit eroded into it that I’m guessing was .010-.020” deep. New plugs and running like a champ now.
#29
Senior Member