NHTSA Complaint #11180972 — 2012 FORD EXPLORER

AT BEGINNING, VEHICLE FREQUENTLY SUDDENLY REDUCE THE SPEED WHILE DRIVING, THEN I EXPERIENCED THE DIFFICULTY TO START THE ENGINE IN THE MORNING. MISS FIRE OF THE ENGINE EXPERIENCED DURING BOTH IN DRIVING AND MORNING ENGINE START. THE VEHICLE ALSO ACCELERATE WHEN THE DRIVING SPEED AROUND 20 MPH IN CITY DRIVING, AND SUDDENLY REDUCING THE SPEED WHEN IT IS AROUND 80 MPH ON HIGHWAY. SO I DECIDED TO SEND IT TO A LOCAL REPAIR SHOP FOR FINALLY I PARKED INSIDE OF THE GARAGE AND WAITING TO DELIVERY IT DIAGNOSTIC, BUT THE REPAIR SHOP COULD DETECT ANYTHING WRONG IN MECHANIC, THEREFORE THEY RECOMMEND NE SEND IT TO FORD DEALER FOR FURTHER TESTING. AFTER STORE THIS VEHICLE IN THE GARAGE FOR FEW DAYS, THE ENGINE CAN NOT START AT ALL. I HAD TO TOW IT TO FORD DEALER FOR FURTHER TESTING. THE ONLY ERROR FORD DEALER FOUND IS THE RE-INSTALLATION OF PCM SOFTWARE. WHICH FORD HAD A RECALL ON THIS VEHICLE, THE RECALL WORK WAS PERFORMED BY THE SAME FORD DEALER ON 11-15-2016. AFTER LAST WEEK RE-INSTALL THE PCM SOFTWARE BY FORD DEALER, I STILL EXPERIENCE THE UNEVEN SHAKING WHEN THE ENGINE ACCELERATE TO 4000 RPM (NOT DRIVING CONDITION), AS WELL AS THE DIVING SPEED CLOSE TO 80 MPH ON HIGHWAY. BUY FORD DEALER CLAIMS THESE SYMPTOMS ARE VERY NORMAL OF THE FORD EXPEDITION.