NHTSA Complaint #10558145 — 2011 FORD F-150

UNDER HARD ACCELERATION ON THE HIGHWAY, THE ENGINE BEGAN TO CUT OUT AND MISFIRE, THEN THE CHECK ENGINE LIGHT BEGAN TO FLASH. I TOOK THE VEHICLE TO THE DEALERSHIP AND THEY SAID THE INNERCOOLER HAD FAILED AND NEEDED TO BE REPLACED. NOW, AT ROUGHLY 55,000 MILES IT HAS BEGUN TO DO IT AGAIN, I HAD NOTICED IT SOME BEFORE, BUT NOW IT IS WORSE. I TOOK MY 2011 F150 WITH THE ECOBOOST TO THE DEALERSHIP AGAIN AND THEY SAID A TSB HAD BEEN WRITTEN AND THEY CHANGED THE REPLACED THE LOWER AIR DEFLECTOR. THIS ACTUALLY MADE THE PROBLEM WORSE. AT WIDE OPEN THROTTLE FROM A STOP TO ABOUT 80 MPH, EVERY GEAR WILL CUT OUT AND SOMETIMES PUT THE ENGINE INTO A PROTECTION MODE BEGINNING AROUND 4,000 RPM. IF IT SHAKES AND SHUDDERS MADE ENOUGH THE CHECK ENGINE LIGHT WILL FLASH, AND NOW IT HAS COME ON AND STAYED ON. IT HAS BEEN VERY DANGEROUS IF I PULL OUT TO MAKE A PASS AND THEN THE ENGINE SHUTS DOWN AND I CAN NO LONGER ACCELERATE. THIS HAS HAPPENED DOZENS OF TIMES, AND HAS BEEN ADDRESSED TWICE NOW BY THE DEALERSHIP WITHOUT ANY FIX. *TR