Problems · by component
2003 Ford Mustang engine and engine cooling problems
62 owner complaints to NHTSA about the 2003 Ford Mustang cite engine and engine cooling, 23% of all 271 complaints for this model year.
Complaints
62
23% of all complaints
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
1
Reported by owners
What owners say about the engine and engine cooling
Verbatim from NHTSA complaints, newest first
“TL* THE CONTACT OWNS A 2003 FORD MUSTANG. THE CONTACT STATED THAT BLACK MICRO FIBERS WERE EMITTED INTO THE VEHICLE FROM THE VENTS THROUGH THE AIR CONDITIONING SYSTEM. THE DEALER ADVISED THE CONTACT TO BRING THE VEHICLE IN FOR DIAGNOSTIC TESTING BUT THE VEHICLE WAS NEITHER DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE CURRENT MILEAGE WAS 30,000 AND THE APPROXIMATE FAILURE MILEAGE WAS UNKNOWN.”
“ALL TECHNICAL SERVICE BULLETIN STATING THAT VEHICLES BUILT BEFORE 12/19/04 HAVE THIS PROBLEM. A ENGINE CYLINDER WITH NO COMPRESSION. FORD IS AWARE BUT DOES NOT WANT TO DO ANYTHING ABOUT IT. IF FACT THEY WANT THE DAMAGED PART RETURN AND IT'S NOT FOR A CORE EXCHANGE SINCE THE NEW PART HAS TO BE BRAND NEW REPLACEMENT. MUST BE FOR EVIDENCE OF FAULTY PART. *TR”
“I PARKED THE CAR ALONG THE CURB AT UCLA AND SPENT THE NIGHT AT THE DORMS. THE CAR WAS RUNNING PERFECTLY FINE, I DIDN'T NOTICE ANYTHING DIFFERENT AND THERE WERE NO PROBLEMS. WHEN I AWOKE THE FOLLOWING MORNING A FRIEND AND I WERE HUNGRY SO WE DECIDED TO GO TO MCDONALD'S. IT WAS APPROX. 1.5 - 2 MILES AWAY. WHILE WE WERE SITTING IN THE DRIVE THROUGH, I STARTED TO HEAR A LOUD NOISE, KIND OF LIKE A BELT SQUEAKING INSIDE THE HOOD. I COULDN'T TELL IF IT WAS FROM MY CAR OR THE CAR TO THE SIDE OF ME, SO I TURNED THE CAR OFF. THE NOISE STOPPED. WHEN I TURNED THE CAR BACK ON HOWEVER, THE NOISE GOT UNBEARABLY LOUD AND SOUNDED LIKE METAL ON METAL, AND WE NOTICED THE AROMA OF SOMETHING BURNING. I EXITED THE DRIVE THROUGH AND STOPPED AT THE RED LIGHT. I LOOKED AT THE GAUGES, AND THE OIL, BATTERY AND TEMPERATURE GAUGES WERE ALL WHERE THEY NORMALLY SHOULD BE, BOUT IN THE MIDDLE TO SLIGHTLY ABOVE THE HALFWAY MARK...WELL...THE CAR SUDDENLY STALLED AND I ASSUMED THEN THAT IT HAD SOMETHING TO DO WITH THE TRANSMISSION. I KNEW THERE WAS A GAS STATION UP AHEAD, SO I TRIED TO START THE CAR AGAIN, IT HAD SOME PROBLEMS STARTING UP, BUT THEN FINALLY STARTED AND I WAS GOING TO DRIVE THE…”
“TL*THE CONTACT OWNS A 2003 FORD MUSTANG. WHILE DRIVING 30 MPH, THE VEHICLE BEGAN MAKING A LOUD POPPING SOUND. THE CONTACT STOPPED THE VEHICLE AND CALLED FOR ASSISTANCE. THE VEHICLE WAS TOWED TO HER RESIDENCE. SHE LOOKED UNDER THE HOOD AND NOTICED THAT THE NUMBER 8 SPARK PLUG HAD BECOME DETACHED. THE POWERTRAIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 92,000 AND CURRENT MILEAGE WAS 93,000.”
“JULY 2007 THROUGH CURRENT DATE. CAR STALLS WHEN PUSHING IN CLUTCH TO STOP OR MAKE TURNS. THERE IS A TSB (17542)ON THIS ISSUE BUT NO RECALL. THIS IS A DANGEROUS CONDITION WHICH COULD BE FATAL TO A NOVICE DRIVER; ESPECIALLY WHEN CAR STALLS DURING A LEFT HAND TURN. *TR”
“ON COLD START, THERE IS A "TICKING" SOUND. TOOK IT TO MECHANIC AND HE GAVE ME A TECHNICAL SERVICE BULLETIN ARTICLE #03-25-6, DATED 12/22/03, REGARDING FORD, LINCOLN AND MERCURY ENGINES BUILT BEFORE 9/17/2003. EMAILED FORD MOTOR COMPANY TO FIND OUT WHAT COULD BE DONE TO RECTIFY THE SITUATION AS IT IS A KNOWN DEFECT OF THE CAR ALTHOUGH IT IS NOT A SAFETY ISSUE. ALL THEY COULD TELL ME IS THERE IS NO RECALL AND TAKE IT TO AN AUTHORIZED DEALER TO HAVE IT DIAGNOSED AND REPAIRED IF NEED. *TR”
Showing 6 of 62 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.