2009 Ford Mustang

The clutch/flywheel/ and or other components of the drive train/engine/transmission connection are faulty and are known to fail for the 2007-2009 Shelby Ford Mustang GT 500 as documented in the numerous Ford Technical Service Bullitens (TSB). This vehicle is available for inspection upon request. Late this summer (2023), I was driving this vehicle with my kids in the car and attempting to merge on the entry ramp for the expressway. I experienced a sudden loss of acceleration and the RPMs immediately "redlined". I had to pull over to the shoulder of the expressway so I would not be rear-ended. I researched this issue and found hundreds of posts on Mustang forums documenting this known issue and the TSB issued by Ford. I have reached out to Ford directly and had my vehicle inspected at a Ford Dealership. The Ford Dealership indicated the issues were consistent with the known defective parts. There were zero warnings either by warning lights or symptoms and I am just fortunate to have been in an accident with my children. I only have approximately 27,000 miles on this vehicle and it is not modified in any way. I have the dealership documentation as well that I can email at a later date. I unfortunately do not have it in electronic format at this time.

THE REAR DIFFERENTIAL ON MY CAR WAS LEAKING FLUID WITH LESS THAN 30,000 MILES ON THE CAR. THE 3 YEAR/36,000 MILE WARRANTY HAD EXPIRED SO I INSPECTED IT MYSELF.WHEN I REMOVED THE FILL PLUG IN THE REAREND I HEARD PRESSURE ESCAPE.THAT TOLD ME THE PRESSURE RELIEVE VALVE IN THE REAREND WAS DEFECTIVE.BUT BECAUSE OF THAT MY SEALS NEED TO BE REPLACED IN MY REAR DIFFERENTIAL NOW.AFTER TALKING TO OTHER MUSTANG OWNERS I HAVE BEEN TOLD THIS IS A COMMON AND EXPENSIVE AND DANGEROUS PROBLEM.THIS COULD CAUSE FLUID TO LEAK ONTO REAR BRAKES OR EVEN WORSE TO MUCH FLUID LOSE WOULD CAUSE THE REAR DIFFERENTIAL TO LOCK UP AND CAUSE A ACCIDENT.I MODIFIED THE RELIEF VALVE TO FIX THE PRESSURE BUILD UP PROBLEM.BUT NOW NEED TO HAVE THE SEALS REPLACED WHICH IS A EXPENSIVE REPAIR.I RARELY DRIVE MY CAR AND IT IS ALWAYS GARAGED.THAT IS HOW I NOTICED IT WAS LEAKING AFTER SEEING A PUDDLE ON THE FLOOR.I ALSO KNOW THIS IS A COMMON PROBLEM ON THAT YEAR MUSTANG BECAUSE I'VE SEEN ON AUTOMOTIVE BLOGS ON THIS PROBLEM AND THEY RECOMMEND BUYING A AFTERMARKET RELIEF VALVE BEFORE THIS PROBLEM HAPPENS.IT ISN'T LIKE MY CAR WAS DRIVEN IN HARSH CONDITIONS OR EVEN DRIVEN DAILY. I FIXED THE RELIEF VALVE MYSELF AND HAVE NOT HAD THE DAMAGED SEAL REPLACED YET,BECAUSE I WAS GOING TO HAVE IT DONE WHEN THEY REPLACED THE RECALLED AIRBAGS. EVERY TIME I TRY TO SET UP A APPOINTMENT THEY SAY THE STILL DON'T HAVE THE REPLACEMENT AIRBAGS IN STOCK. I RARELY DRIVE THE CAR NOW BECAUSE OF THE ISSUES AND MAYBE DRIVEN THE CAR A FEW TIMES IN THE PAST 2 YEARS. I BELIEVE THIS IS A COMMON PROBLEM ON THE 2005-2009 FORD MUSTANG AND FORD SHOULD REPAIR AND REPLACE ANY PARTS DAMAGED BY THIS ISSUE.THE RELIEF VALVE IS ONLY A 10-15 DOLLAR PART BUT IT'S FAILURE CAN CAUSE THOUSANDS OF DOLLARS IN DAMAGE AND ALSO A DEADLY CRASH.

CLUTCH FAILURE ON MY 2009 FORD MUSTANG GT500 - AT 18,000 MILES THE CLUTCH BEGAN TO SLIP WHILE IN HEAVY TRAFFIC. I TOOK THE CAR TO M PURCHASING DEALER AND REQUESTED A DIAGNOSTIC, THEY INDEED CONFIRMED THAT THE CAR EXHIBITED THE PROBLEM BUT INFORMED ME THAT IT WAS A WEAR ITEM WITH ONLY A 12 MS/12K WARRANTY. FORD HAS ISSUED A TSB ON THE CLUTCH AND ITS FLYWHEEL INDICATING THAT HEAVY STOP AND GO TRAFFIC WILL WARP THE FLYWHEEL AND IN TURN RUIN THE CLUTCH AND TRANSMISSION. FORD DID NOTHING TO FIX THE PROBLEM (IDENTIFIED IN THE TSB,NHTSA 10032615 - TSB-09-19-11). *TR

TL*THE CONTACT OWNS A 2009 FORD MUSTANG. WHILE SHIFTING FROM THIRD INTO FOURTH GEAR, THE RPMS SUDDENLY SURGED ALL THE WAY UP, DECREASED TO 6,000 RPMS, AND FINALLY SURGED ALL THE WAY BACK UP AGAIN. THE CONTACT HAD TO PLACE THE VEHICLE INTO NEUTRAL IN ORDER TO STOP THE VEHICLE. THE VEHICLE IS CURRENTLY BEING DIAGNOSED. THE CURRENT AND FAILURE MILEAGES WERE 1,000. UPDATED 12/07/09. *LJ THE CONSUMER STATED THE ACCELERATOR PEDAL BECAME STUCK ON THE FLOOR MAT. UPDATED 12/08/09