NHTSA Complaint #10471299 — 2011 FORD MUSTANG

MILD TO VIOLENT VIBRATION FROM MANUAL TRANSMISSION UPON DOWNSHIFTING FOR DECELERATION ON EXIT RAMP IN THE RANGE OF 5500-2500 RPM. MILD TO VIOLENT SHAKING FELT THROUGH CAR...STEERING WHEEL, SHIFTER, PEDALS...SEATS... ENGINE SPEED IS MATCHED TO TRANSMISSION SPEED PRIOR TO CLUTCH ENGAGEMENT. I'VE BEEN DRIVING MANUAL SHIFT CARS , MUSTANG GT, SMALL BRITISH AND AMERICAN CARS FOR OVER 35 YEARS. WHEN STAYING IN THIRD GEAR FOR EXAMPLE IN TRAFFIC THAT SPEEDS UP AND SLOWS DOWN, VIBRATIONS COME ON ABOVE 2500 RPM THIS IS AN INTERMITTENT PROBLEM. MORE NOTICEABLE NOW IN THE WARM WEATHER. I DRIVE ABOUT 35 MILES EACH WAY TO AND FROM WORK. WHEN THE CAR IS THOROUGHLY WARMED, I EXPERIENCE IT EVERYDAY NOW IN THE WARM WEATHER. PLACED INTO FORD DEALER IN DECATUR, AL. HE KEPT THE CAR 4 COMPLETE DAYS AND AFTER WAITING FOR NEWS I WENT AND GOT IT BACK. AS I WAS LEAVING THE DEALER, THE SERVICE MANAGER WHO NEVER LOOKED UP FROM HIS PAPERWORK, SAID "WE COULDN'T FIND ANYTHING". WHEN I PUT THE CAR IN FOR SERVICE IT HAD 34000 MILES ON IT. NOW IT HAS OVER 36,000. THIS IS GETTING WORSE WITH AGE AND MILEAGE. I WONDER IF AT 50000 MILES IF THE CAR WILL BE UNDRIVEABLE? *TR