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2003 Lincoln Navigator

Owner reports · Recalls · Investigations

More warning signs than most Navigator years

Owner complaints for the 2003 Lincoln Navigator are substantially higher than the model-year median of 30.

About this comparison →

When problems were reported

Mileage at the reported incident

91 reports with mileage · 36 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Suspension. Review the 38 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 22 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Structure. Review the 18 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

6 crash reports3 fire reports11 injury reports

What owners actually said

127 reports
122,303 miles · May 11, 2011
Air Bags

TL*THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT WHILE DRIVING 45 MPH, BOTH THE DRIVER AND PASSENGER SIDE AIR BAGS SUDDENLY DEPLOYED. THERE WAS NO CRASH WHEN THE AIR BAG DEPLOYED OR WARNING PRIOR TO THE FAILURE. THERE WERE NO INJURIES. THE VEHICLE HAD NOT BEEN INSPECTED OR REPAIRED. THE CONTACT CALLED THE MA…

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TL*THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT WHILE DRIVING 45 MPH, BOTH THE DRIVER AND PASSENGER SIDE AIR BAGS SUDDENLY DEPLOYED. THERE WAS NO CRASH WHEN THE AIR BAG DEPLOYED OR WARNING PRIOR TO THE FAILURE. THERE WERE NO INJURIES. THE VEHICLE HAD NOT BEEN INSPECTED OR REPAIRED. THE CONTACT CALLED THE MANUFACTURER FOR ASSISTANCE WHO REFERRED HER TO AN AUTHORIZED DEALER. THE CURRENT AND FAILURE MILEAGES WERE 122,303.

NHTSA ODI #10400546

12,200 miles · Mar 29, 2011
Wheels

TL*THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT WHILE DRIVING 35 MPH A NOISE WAS IN THE REAR OF THE VEHICLE. THE CONTACT DROVE ONTO THE SIDE OF THE ROAD TO DETERMINE WHERE THE NOISE WAS COMING FROM AND NOTICED THAT THE CHROME WAS COMING OFF OF THE REAR DRIVERS SIDE WHEEL. THE CHROME PEELED TO THE POINT WHE…

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TL*THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT WHILE DRIVING 35 MPH A NOISE WAS IN THE REAR OF THE VEHICLE. THE CONTACT DROVE ONTO THE SIDE OF THE ROAD TO DETERMINE WHERE THE NOISE WAS COMING FROM AND NOTICED THAT THE CHROME WAS COMING OFF OF THE REAR DRIVERS SIDE WHEEL. THE CHROME PEELED TO THE POINT WHERE THE RIM WEIGHTS WERE HANGING OFF OF THE VEHICLE AND HITTING THE BRAKE CALIPER. THE CONTACT TOOK THE VEHICLE TO THE DEALER AND WHO STATED THAT THE RIMS NEEDED TO BE REPLACED. THE CONTACT STATED THAT THE VEHICLE WAS DIFFICULT TO DRIVE BECAUSE THE STEERING WHEEL WAS VIBRATING AND MADE IT DIFFICULT TO CONTROL THE STEERING WHEEL. THE CONTACT NOTICED ADDITIONAL COMPLAINTS REGARDING THE RIMS AND THE MANUFACTURER HAD NOT PROVIDED ANY ASSISTANCE TOWARD THE REPLACEMENT. THE FAILURE MILEAGE WAS 12,200.

NHTSA ODI #10393603

112,000 miles · Mar 9, 2011
Exterior Lighting

TL* THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT WAS DRIVING 35 MPH WHEN HE DISCOVERED THAT THE HEADLIGHTS WERE ABNORMALLY BRIGHT. THE CONTACT WAS UNABLE TO ADJUST THE LAMPS AND THE VEHICLE WAS TAKEN TO THE DEALER WHERE THEY WERE UNABLE TO PROVIDE ANY ASSISTANCE. THE MANUFACTURER WAS CONTACTED WHO ALSO OFFERED NO ASSIS…

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TL* THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT WAS DRIVING 35 MPH WHEN HE DISCOVERED THAT THE HEADLIGHTS WERE ABNORMALLY BRIGHT. THE CONTACT WAS UNABLE TO ADJUST THE LAMPS AND THE VEHICLE WAS TAKEN TO THE DEALER WHERE THEY WERE UNABLE TO PROVIDE ANY ASSISTANCE. THE MANUFACTURER WAS CONTACTED WHO ALSO OFFERED NO ASSISTANCE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 112,000.

NHTSA ODI #10389609

61,400 miles · Jan 6, 2011
Power Train

GEAR SHIFT KNOB CAME LOOSE. CAUSING THE VEHICLE TO BE LOCKED INTO THE DRIVE POSITION. COULD NOT USE REVERSE, NEUTRAL OR PARK. I COULD NOT SHIFT THE VEHICLE OUT OF THE DRIVE. DEALERSHIP TELLS ME THAT THE WHOLE ASSEMBLY NEEDS TO BE REPLACED. *TR

NHTSA ODI #10375034

Mileage unknown · Dec 30, 2010
Suspension

SUSPENSION SYSTEM RISES AND FALLS WHILE DRIVING OR PARKED. THE FIRST INCIDENT THE FRONT RIGHT SIDE WOULD NOT RAISE UP AND MADE DRIVING HAZARDOUS. THIS LAST INCIDENT THE REAR WENT UP AND WILL NOT COME DOWN. THE VEHICLE CAN HARDLY BE HELD IN THE ROAD WHEN THIS HAPPENS. SEVERAL COMPLAINTS OF THIS PROBLEM HAVE BEEN LISTED ON THE…

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SUSPENSION SYSTEM RISES AND FALLS WHILE DRIVING OR PARKED. THE FIRST INCIDENT THE FRONT RIGHT SIDE WOULD NOT RAISE UP AND MADE DRIVING HAZARDOUS. THIS LAST INCIDENT THE REAR WENT UP AND WILL NOT COME DOWN. THE VEHICLE CAN HARDLY BE HELD IN THE ROAD WHEN THIS HAPPENS. SEVERAL COMPLAINTS OF THIS PROBLEM HAVE BEEN LISTED ON THE INTERNET. *TR

NHTSA ODI #10373563

Mileage unknown · Dec 29, 2010
Engine And Engine Cooling

I OWN A 2003 LINCOLN NAVIGATOR WITH THE 5.4 LITER ENGINE AND I HAVE AN OIL LEAK COMING FROM BOTH BACK CORNERS ON EACH OF THE CYLINDER HEAD GASKETS. MY MECHANIC SHOP DID RESEARCH AND FOUND THAT DURING THIS YEAR OF 2003 THE GASKETS COULD OF BEEN DAMAGED DURING INSTALLATION AT THE MANUFACTURING PLANT. I FEEL LIKE THIS ISSUE NEEDS T…

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I OWN A 2003 LINCOLN NAVIGATOR WITH THE 5.4 LITER ENGINE AND I HAVE AN OIL LEAK COMING FROM BOTH BACK CORNERS ON EACH OF THE CYLINDER HEAD GASKETS. MY MECHANIC SHOP DID RESEARCH AND FOUND THAT DURING THIS YEAR OF 2003 THE GASKETS COULD OF BEEN DAMAGED DURING INSTALLATION AT THE MANUFACTURING PLANT. I FEEL LIKE THIS ISSUE NEEDS TO BE ADDRESSED AND FOR FORD MOTOR COMPANY TO ISSUE A RECALL ON THIS MATTER. *TR

NHTSA ODI #10373394

108,000 miles · Dec 22, 2010
Electrical SystemElectronic Stability Control (esc)Engine And Engine Cooling

MY 2003 LINCOLN NAVIGATOR HAS SHUT DOWN COMPLETELY THREE TIMES IN THE LAST 6 WEEKS. TWO OF THE OCCASIONS HAPPENED ON THE INTERSTATE WHILE DRIVING ABOUT 55 MPH, THE THIRD INSTANCE HAPPENED IN MY SUBDIVISION DRIVING LESS THAN 30 MPH. AFTER PULLING THE TRUCK OVER TO THE SIDE FOR SAFETY THE TRUCK WILL NOT START IMMEDIATELY BUT WILL …

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MY 2003 LINCOLN NAVIGATOR HAS SHUT DOWN COMPLETELY THREE TIMES IN THE LAST 6 WEEKS. TWO OF THE OCCASIONS HAPPENED ON THE INTERSTATE WHILE DRIVING ABOUT 55 MPH, THE THIRD INSTANCE HAPPENED IN MY SUBDIVISION DRIVING LESS THAN 30 MPH. AFTER PULLING THE TRUCK OVER TO THE SIDE FOR SAFETY THE TRUCK WILL NOT START IMMEDIATELY BUT WILL START AFTER RESTING ABOUT 7 MINUTES. WHEN THE TRUCK SHUTS DOWN SEVERAL LIGHTS ON THE DASHBOARD LIGHT UP. I EXPLAINED THE ISSUE AS WELL AS I COULD TO MY LOCAL FORD / LINCOLN DEALERSHIP IN MADISON, TN BUT THEY COULD NOT FIND ANY ISSUES WITH IT SAYING THAT NO CODES WERE SHOWING. I ALSO TOOK THE TRUCK TO A GOODYEAR SERVICE REPAIR IN BRENTWOOD, TN BUT THEY ALSO COULD NOT DIAGNOSE THE PROBLEM. AFTER SEARCHING FOR THIS TYPE OF ISSUE ON THE INTERNET I FOUND NUMEROUS CUSTOMERS THAT HAVE HAD A SIMILAR EXPERIENCE, SOME SAYING THAT THE ISSUE IS RELATED TO THE "FAIL SAFE" SECURITY OPTION KICKING IN WHILE A PERSON IS DRIVING. THE ISSUE OF HAVING MY TRUCK SHUT DOWN COMPLETELY ON THE INTERSTATE IS DANGEROUS AND I WOULD APPRECIATE HELP ON GETTING THE ISSUE RESOLVED AS SOON AS POSSIBLE.

NHTSA ODI #10372802

140,000 miles · Dec 1, 2010
Service Brakes, HydraulicSuspension

TL*THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH THE FRONT AND REAR SUSPENSION FAILED AND CAUSED THE VEHICLE TO BOUNCE ABNORMALLY. WHILE TURNING THE STEERING WHEEL HE COULD FEEL THE BODY OF THE TRUCK TOUCH THE TIRE. THE ABS LIGHTS ILLUMINATED ON THE INSTRUMENTAL PANEL PRIOR…

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TL*THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH THE FRONT AND REAR SUSPENSION FAILED AND CAUSED THE VEHICLE TO BOUNCE ABNORMALLY. WHILE TURNING THE STEERING WHEEL HE COULD FEEL THE BODY OF THE TRUCK TOUCH THE TIRE. THE ABS LIGHTS ILLUMINATED ON THE INSTRUMENTAL PANEL PRIOR TO THE FAILURE. THE VEHICLE WAS INSPECTED AND REPAIRED IN APRIL 2008 AND HAD NOT BEEN INSPECTED FOR THE CURRENT FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 140,000. UPDATED 5/9/11 *CN

NHTSA ODI #10368497

112,000 miles · Nov 29, 2010
Suspension

SUSPENSION RELAY FAILS THEN COMPRESSOR FAILS NOW IT STILL WILL NOT FILL AND HOLD AS IT SHOULD RIGHT FRONT DIPS DANGEROUSLY LOW NO REAL FIX OR RELIEF IN SIGHT. *TR

NHTSA ODI #10368246

98,000 miles · Nov 15, 2010
Suspension

SUSPENSION PROBLEMS IN MY 2003 LINCOLN NAVIGATOR. *TR

NHTSA ODI #10365684

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

DP05005 · Spark Plug Ejection From Cylinder Head

Opened Sep 22, 2005 · Closed Jan 4, 2006

Status: closed (inferred from source dates) · Engine And Engine Cooling; Engine And Engine Cooling:engine; Engine And Engine Cooling:engine:gasoline

ON SEPTEMBER 6, 2005, ODI RECEIVED A PETITION REQUESTING THAT THE AGENCY INVESTIGATE ALLEGATIONS OF ENGINE SPARK PLUG EJECTION IN CERTAIN MODEL YEAR 1997 THROUGH 2004 FORD VEHICLES WITH TRITON V-8 AND V-10 ENGINES.ODI RECEIVED A TOTAL OF 474 NON-DUPLICATIVE COMPLAINTS ON THE SUBJECT VEHICLES WHERE THE COMPLAINANT, OR THE DEALER REPAIRING THE VEHICLE, REPORTED THAT A SPARK PLUG DETACHED FROM THE CYLINDER AND/OR EJECTED FROM THE ENGINE.AS OF DECEMBER 8, 2005, ODI IS NOT AWARE OF ANY ALLEGATIONS WHERE THE ALLEGED DEFECT RESULTED IN A LOSS OF VEHICLE CONTROL, A CRASH, AN INJURY, OR A FATALITY IN ANY OF THE 10,319,810 SUBJECT VEHICLES.IN ADDITION, ODI IS AWARE OF ONLY TWO INCIDENTS WHERE THE VEHICLE STALLED WITHOUT RESTART.INFORMATION CONTAINED IN THE ODI CONSUMER COMPLAINTS AND OBTAINED FROM 72 TELEPHONE INTERVIEWS WITH COMPLAINANTS SHOWED THE FOLLOWING:(1) 99% OF THE COMPLAINTS WERE ON MY 1997 TO 2002 SUBJECT VEHICLES.(2) MOST THE COMPLAINANTS REPORTED HEARING A LOUD POP WHILE DRIVING OR UPON STARTING UP THE VEHICLE FOLLOWED BY A LOUD, REPETITIVE CLICKING OR POPPING SOUND.(3) MANY OF THE COMPLAINANTS REPORTED THAT THE POPPING SOUND WAS ACCOMPANIED BY SOME LOSS OF VEHICLE POWER; HOWEVER, IN 99% OF THE INCIDENTS REPORTED, THE VEHICLE DID NOT STALL.IN THE VERY FEW INCIDENTS WHERE THE VEHICLE DID STALL, MOST VEHICLES COULD BE RESTARTED.(4) ONLY A SMALL PERCENTAGE OF THE COMPLAINANTS CITED THAT THEY SMELLED GAS OR A SLIGHT BURNING SMELL WHEN THE INCIDENT OCCURRED.(5) IN ALL BUT A VERY FEW INCIDENTS, VEHICLE DAMAGE WAS LIMITED TO THE ENGINE.IN ONE INCIDENT, THE COMPLAINT REPORTED THAT THE FUEL RAIL WAS DAMAGED AND REPLACED AFTER ONE OF THE SPARK PLUGS EJECTED FROM THE ENGINE; HOWEVER, THE COMPLAINANT REPORTED THAT THE DAMAGE DID NOT RESULT IN ANY TYPE OF FUEL LEAK OR FIRE.IN ANOTHER INCIDENT, THE ONLY INCIDENT WHERE A FIRE WAS ALLEGED, THE COMPLAINANT REPORTED THAT NO FLUID LEAK WAS OBSERVED, BUT THAT A FIRE RESULTED AFTER THE SPARK PLUG HAD EJECTED FROM THE ENGINE AND HE HAD RESTARTED THE VEHICLE AND DRIVEN TO ANOTHER LOCATION.NONE OF THE COMPLAINANTS REPORTED ANY DAMAGE TO THE VEHICLE HOOD.(6) ONLY TWO COMPLAINANTS REPORTED THAT THEY OBSERVED WHAT APPEARED TO BE SOME DROPS OF FUEL COMING FROM THE CYLINDER WHERE THE SPARK PLUG HAD FAILED OR ON THE SPARK PLUG ITSELF; HOWEVER, EACH OF THESE COMPLAINANTS REPORTED THAT THERE WAS NO SMOKE OR FLAMES AS A RESULT OF HIS INCIDENT.AS THE PETITIONER NOTED, AND ODI?S ANALYSIS SHOWED, IT IS POSSIBLE FOR A SPARK PLUG TO DETACH FROM THE ENGINE CYLINDER THREADS IN THE SUBJECT VEHICLES.HOWEVER, ODI?S ANALYSIS OF 474 COMPLAINTS DESCRIBING SUCH INCIDENTS FOUND ONLY A VERY FEW ALLEGED ANY SAFETY-RELATED CONSEQUENCES.NONE OF THESE SHOWED ANY EVIDENCE OF A SERIOUS SAFETY CONSEQUENCE.GIVEN THE LARGE POPULATION AND RELATIVELY LONG EXPOSURE TIME OF THE SUBJECT VEHICLES, THE COMPLAINT ANALYSIS INDICATES THAT THE RISK TO MOTOR VEHICLE SAFETY FROM THE ALLEGED DEFECT IS VERY LOW.IN VIEW OF THE FOREGOING, IT IS UNLIKELY THAT NHTSA WOULD ISSUE AN ORDER FOR THE NOTIFICATION AND REMEDY OF THE ALLEGED DEFECT AT THE CONCLUSION OF THE INVESTIGATION REQUESTED IN THE PETITION.THEREFORE, IN VIEW OF THE NEED TO ALLOCATE AND PRIORITIZE NHTSA?S LIMITED RESOURCES TO BEST ACCOMPLISH THE AGENCY?S SAFETY MISSION, THE PETITION IS DENIED.

Additional source detail variants (3)

Engine And Engine Cooling:engine

ON SEPTEMBER 6, 2005, ODI RECEIVED A PETITION REQUESTING THAT THE AGENCY INVESTIGATE ALLEGATIONS OF ENGINE SPARK PLUG EJECTION IN CERTAIN MODEL YEAR 1997 THROUGH 2004 FORD VEHICLES WITH TRITON V-8 AND V-10 ENGINES.ODI RECEIVED A TOTAL OF 474 NON-DUPLICATIVE COMPLAINTS ON THE SUBJECT VEHICLES WHERE THE COMPLAINANT, OR THE DEALER REPAIRING THE VEHICLE, REPORTED THAT A SPARK PLUG DETACHED FROM THE CYLINDER AND/OR EJECTED FROM THE ENGINE.AS OF DECEMBER 8, 2005, ODI IS NOT AWARE OF ANY ALLEGATIONS WHERE THE ALLEGED DEFECT RESULTED IN A LOSS OF VEHICLE CONTROL, A CRASH, AN INJURY, OR A FATALITY IN ANY OF THE 10,319,810 SUBJECT VEHICLES.IN ADDITION, ODI IS AWARE OF ONLY TWO INCIDENTS WHERE THE VEHICLE STALLED WITHOUT RESTART.INFORMATION CONTAINED IN THE ODI CONSUMER COMPLAINTS AND OBTAINED FROM 72 TELEPHONE INTERVIEWS WITH COMPLAINANTS SHOWED THE FOLLOWING:(1) 99% OF THE COMPLAINTS WERE ON MY 1997 TO 2002 SUBJECT VEHICLES.(2) MOST THE COMPLAINANTS REPORTED HEARING A LOUD POP WHILE DRIVING OR UPON STARTING UP THE VEHICLE FOLLOWED BY A LOUD, REPETITIVE CLICKING OR POPPING SOUND.(3) MANY OF THE COMPLAINANTS REPORTED THAT THE POPPING SOUND WAS ACCOMPANIED BY SOME LOSS OF VEHICLE POWER; HOWEVER, IN 99% OF THE INCIDENTS REPORTED, THE VEHICLE DID NOT STALL.IN THE VERY FEW INCIDENTS WHERE THE VEHICLE DID STALL, MOST VEHICLES COULD BE RESTARTED.(4) ONLY A SMALL PERCENTAGE OF THE COMPLAINANTS CITED THAT THEY SMELLED GAS OR A SLIGHT BURNING SMELL WHEN THE INCIDENT OCCURRED.(5) IN ALL BUT A VERY FEW INCIDENTS, VEHICLE DAMAGE WAS LIMITED TO THE ENGINE.IN ONE INCIDENT, THE COMPLAINT REPORTED THAT THE FUEL RAIL WAS DAMAGED AND REPLACED AFTER ONE OF THE SPARK PLUGS EJECTED FROM THE ENGINE; HOWEVER, THE COMPLAINANT REPORTED THAT THE DAMAGE DID NOT RESULT IN ANY TYPE OF FUEL LEAK OR FIRE.IN ANOTHER INCIDENT, THE ONLY INCIDENT WHERE A FIRE WAS ALLEGED, THE COMPLAINANT REPORTED THAT NO FLUID LEAK WAS OBSERVED, BUT THAT A FIRE RESULTED AFTER THE SPARK PLUG HAD EJECTED FROM THE ENGINE AND HE HAD RESTARTED THE VEHICLE AND DRIVEN TO ANOTHER LOCATION.NONE OF THE COMPLAINANTS REPORTED ANY DAMAGE TO THE VEHICLE HOOD.(6) ONLY TWO COMPLAINANTS REPORTED THAT THEY OBSERVED WHAT APPEARED TO BE SOME DROPS OF FUEL COMING FROM THE CYLINDER WHERE THE SPARK PLUG HAD FAILED OR ON THE SPARK PLUG ITSELF; HOWEVER, EACH OF THESE COMPLAINANTS REPORTED THAT THERE WAS NO SMOKE OR FLAMES AS A RESULT OF HIS INCIDENT.AS THE PETITIONER NOTED, AND ODI?S ANALYSIS SHOWED, IT IS POSSIBLE FOR A SPARK PLUG TO DETACH FROM THE ENGINE CYLINDER THREADS IN THE SUBJECT VEHICLES.HOWEVER, ODI?S ANALYSIS OF 474 COMPLAINTS DESCRIBING SUCH INCIDENTS FOUND ONLY A VERY FEW ALLEGED ANY SAFETY-RELATED CONSEQUENCES.NONE OF THESE SHOWED ANY EVIDENCE OF A SERIOUS SAFETY CONSEQUENCE.GIVEN THE LARGE POPULATION AND RELATIVELY LONG EXPOSURE TIME OF THE SUBJECT VEHICLES, THE COMPLAINT ANALYSIS INDICATES THAT THE RISK TO MOTOR VEHICLE SAFETY FROM THE ALLEGED DEFECT IS VERY LOW.IN VIEW OF THE FOREGOING, IT IS UNLIKELY THAT NHTSA WOULD ISSUE AN ORDER FOR THE NOTIFICATION AND REMEDY OF THE ALLEGED DEFECT AT THE CONCLUSION OF THE INVESTIGATION REQUESTED IN THE PETITION.THEREFORE, IN VIEW OF THE NEED TO ALLOCATE AND PRIORITIZE NHTSA?S LIMITED RESOURCES TO BEST ACCOMPLISH THE AGENCY?S SAFETY MISSION, THE PETITION IS DENIED.

Engine And Engine Cooling:engine:gasoline

ON SEPTEMBER 6, 2005, ODI RECEIVED A PETITION REQUESTING THAT THE AGENCY INVESTIGATE ALLEGATIONS OF ENGINE SPARK PLUG EJECTION IN CERTAIN MODEL YEAR 1997 THROUGH 2004 FORD VEHICLES WITH TRITON V-8 AND V-10 ENGINES.ODI RECEIVED A TOTAL OF 474 NON-DUPLICATIVE COMPLAINTS ON THE SUBJECT VEHICLES WHERE THE COMPLAINANT, OR THE DEALER REPAIRING THE VEHICLE, REPORTED THAT A SPARK PLUG DETACHED FROM THE CYLINDER AND/OR EJECTED FROM THE ENGINE.AS OF DECEMBER 8, 2005, ODI IS NOT AWARE OF ANY ALLEGATIONS WHERE THE ALLEGED DEFECT RESULTED IN A LOSS OF VEHICLE CONTROL, A CRASH, AN INJURY, OR A FATALITY IN ANY OF THE 10,319,810 SUBJECT VEHICLES.IN ADDITION, ODI IS AWARE OF ONLY TWO INCIDENTS WHERE THE VEHICLE STALLED WITHOUT RESTART.INFORMATION CONTAINED IN THE ODI CONSUMER COMPLAINTS AND OBTAINED FROM 72 TELEPHONE INTERVIEWS WITH COMPLAINANTS SHOWED THE FOLLOWING:(1) 99% OF THE COMPLAINTS WERE ON MY 1997 TO 2002 SUBJECT VEHICLES.(2) MOST THE COMPLAINANTS REPORTED HEARING A LOUD POP WHILE DRIVING OR UPON STARTING UP THE VEHICLE FOLLOWED BY A LOUD, REPETITIVE CLICKING OR POPPING SOUND.(3) MANY OF THE COMPLAINANTS REPORTED THAT THE POPPING SOUND WAS ACCOMPANIED BY SOME LOSS OF VEHICLE POWER; HOWEVER, IN 99% OF THE INCIDENTS REPORTED, THE VEHICLE DID NOT STALL.IN THE VERY FEW INCIDENTS WHERE THE VEHICLE DID STALL, MOST VEHICLES COULD BE RESTARTED.(4) ONLY A SMALL PERCENTAGE OF THE COMPLAINANTS CITED THAT THEY SMELLED GAS OR A SLIGHT BURNING SMELL WHEN THE INCIDENT OCCURRED.(5) IN ALL BUT A VERY FEW INCIDENTS, VEHICLE DAMAGE WAS LIMITED TO THE ENGINE.IN ONE INCIDENT, THE COMPLAINT REPORTED THAT THE FUEL RAIL WAS DAMAGED AND REPLACED AFTER ONE OF THE SPARK PLUGS EJECTED FROM THE ENGINE; HOWEVER, THE COMPLAINANT REPORTED THAT THE DAMAGE DID NOT RESULT IN ANY TYPE OF FUEL LEAK OR FIRE.IN ANOTHER INCIDENT, THE ONLY INCIDENT WHERE A FIRE WAS ALLEGED, THE COMPLAINANT REPORTED THAT NO FLUID LEAK WAS OBSERVED, BUT THAT A FIRE RESULTED AFTER THE SPARK PLUG HAD EJECTED FROM THE ENGINE AND HE HAD RESTARTED THE VEHICLE AND DRIVEN TO ANOTHER LOCATION.NONE OF THE COMPLAINANTS REPORTED ANY DAMAGE TO THE VEHICLE HOOD.(6) ONLY TWO COMPLAINANTS REPORTED THAT THEY OBSERVED WHAT APPEARED TO BE SOME DROPS OF FUEL COMING FROM THE CYLINDER WHERE THE SPARK PLUG HAD FAILED OR ON THE SPARK PLUG ITSELF; HOWEVER, EACH OF THESE COMPLAINANTS REPORTED THAT THERE WAS NO SMOKE OR FLAMES AS A RESULT OF HIS INCIDENT.AS THE PETITIONER NOTED, AND ODI?S ANALYSIS SHOWED, IT IS POSSIBLE FOR A SPARK PLUG TO DETACH FROM THE ENGINE CYLINDER THREADS IN THE SUBJECT VEHICLES.HOWEVER, ODI?S ANALYSIS OF 474 COMPLAINTS DESCRIBING SUCH INCIDENTS FOUND ONLY A VERY FEW ALLEGED ANY SAFETY-RELATED CONSEQUENCES.NONE OF THESE SHOWED ANY EVIDENCE OF A SERIOUS SAFETY CONSEQUENCE.GIVEN THE LARGE POPULATION AND RELATIVELY LONG EXPOSURE TIME OF THE SUBJECT VEHICLES, THE COMPLAINT ANALYSIS INDICATES THAT THE RISK TO MOTOR VEHICLE SAFETY FROM THE ALLEGED DEFECT IS VERY LOW.IN VIEW OF THE FOREGOING, IT IS UNLIKELY THAT NHTSA WOULD ISSUE AN ORDER FOR THE NOTIFICATION AND REMEDY OF THE ALLEGED DEFECT AT THE CONCLUSION OF THE INVESTIGATION REQUESTED IN THE PETITION.THEREFORE, IN VIEW OF THE NEED TO ALLOCATE AND PRIORITIZE NHTSA?S LIMITED RESOURCES TO BEST ACCOMPLISH THE AGENCY?S SAFETY MISSION, THE PETITION IS DENIED.

Engine And Engine Cooling

ON SEPTEMBER 6, 2005, ODI RECEIVED A PETITION REQUESTING THAT THE AGENCY INVESTIGATE ALLEGATIONS OF ENGINE SPARK PLUG EJECTION IN CERTAIN MODEL YEAR 1997 THROUGH 2004 FORD VEHICLES WITH TRITON V-8 AND V-10 ENGINES.ODI RECEIVED A TOTAL OF 474 NON-DUPLICATIVE COMPLAINTS ON THE SUBJECT VEHICLES WHERE THE COMPLAINANT, OR THE DEALER REPAIRING THE VEHICLE, REPORTED THAT A SPARK PLUG DETACHED FROM THE CYLINDER AND/OR EJECTED FROM THE ENGINE.AS OF DECEMBER 8, 2005, ODI IS NOT AWARE OF ANY ALLEGATIONS WHERE THE ALLEGED DEFECT RESULTED IN A LOSS OF VEHICLE CONTROL, A CRASH, AN INJURY, OR A FATALITY IN ANY OF THE 10,319,810 SUBJECT VEHICLES.IN ADDITION, ODI IS AWARE OF ONLY TWO INCIDENTS WHERE THE VEHICLE STALLED WITHOUT RESTART.INFORMATION CONTAINED IN THE ODI CONSUMER COMPLAINTS AND OBTAINED FROM 72 TELEPHONE INTERVIEWS WITH COMPLAINANTS SHOWED THE FOLLOWING:(1) 99% OF THE COMPLAINTS WERE ON MY 1997 TO 2002 SUBJECT VEHICLES.(2) MOST THE COMPLAINANTS REPORTED HEARING A LOUD POP WHILE DRIVING OR UPON STARTING UP THE VEHICLE FOLLOWED BY A LOUD, REPETITIVE CLICKING OR POPPING SOUND.(3) MANY OF THE COMPLAINANTS REPORTED THAT THE POPPING SOUND WAS ACCOMPANIED BY SOME LOSS OF VEHICLE POWER; HOWEVER, IN 99% OF THE INCIDENTS REPORTED, THE VEHICLE DID NOT STALL.IN THE VERY FEW INCIDENTS WHERE THE VEHICLE DID STALL, MOST VEHICLES COULD BE RESTARTED.(4) ONLY A SMALL PERCENTAGE OF THE COMPLAINANTS CITED THAT THEY SMELLED GAS OR A SLIGHT BURNING SMELL WHEN THE INCIDENT OCCURRED.(5) IN ALL BUT A VERY FEW INCIDENTS, VEHICLE DAMAGE WAS LIMITED TO THE ENGINE.IN ONE INCIDENT, THE COMPLAINT REPORTED THAT THE FUEL RAIL WAS DAMAGED AND REPLACED AFTER ONE OF THE SPARK PLUGS EJECTED FROM THE ENGINE; HOWEVER, THE COMPLAINANT REPORTED THAT THE DAMAGE DID NOT RESULT IN ANY TYPE OF FUEL LEAK OR FIRE.IN ANOTHER INCIDENT, THE ONLY INCIDENT WHERE A FIRE WAS ALLEGED, THE COMPLAINANT REPORTED THAT NO FLUID LEAK WAS OBSERVED, BUT THAT A FIRE RESULTED AFTER THE SPARK PLUG HAD EJECTED FROM THE ENGINE AND HE HAD RESTARTED THE VEHICLE AND DRIVEN TO ANOTHER LOCATION.NONE OF THE COMPLAINANTS REPORTED ANY DAMAGE TO THE VEHICLE HOOD.(6) ONLY TWO COMPLAINANTS REPORTED THAT THEY OBSERVED WHAT APPEARED TO BE SOME DROPS OF FUEL COMING FROM THE CYLINDER WHERE THE SPARK PLUG HAD FAILED OR ON THE SPARK PLUG ITSELF; HOWEVER, EACH OF THESE COMPLAINANTS REPORTED THAT THERE WAS NO SMOKE OR FLAMES AS A RESULT OF HIS INCIDENT.AS THE PETITIONER NOTED, AND ODI?S ANALYSIS SHOWED, IT IS POSSIBLE FOR A SPARK PLUG TO DETACH FROM THE ENGINE CYLINDER THREADS IN THE SUBJECT VEHICLES.HOWEVER, ODI?S ANALYSIS OF 474 COMPLAINTS DESCRIBING SUCH INCIDENTS FOUND ONLY A VERY FEW ALLEGED ANY SAFETY-RELATED CONSEQUENCES.NONE OF THESE SHOWED ANY EVIDENCE OF A SERIOUS SAFETY CONSEQUENCE.GIVEN THE LARGE POPULATION AND RELATIVELY LONG EXPOSURE TIME OF THE SUBJECT VEHICLES, THE COMPLAINT ANALYSIS INDICATES THAT THE RISK TO MOTOR VEHICLE SAFETY FROM THE ALLEGED DEFECT IS VERY LOW.IN VIEW OF THE FOREGOING, IT IS UNLIKELY THAT NHTSA WOULD ISSUE AN ORDER FOR THE NOTIFICATION AND REMEDY OF THE ALLEGED DEFECT AT THE CONCLUSION OF THE INVESTIGATION REQUESTED IN THE PETITION.THEREFORE, IN VIEW OF THE NEED TO ALLOCATE AND PRIORITIZE NHTSA?S LIMITED RESOURCES TO BEST ACCOMPLISH THE AGENCY?S SAFETY MISSION, THE PETITION IS DENIED.