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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

Suspension complaints

38 reports
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55,000 miles · Feb 4, 2015
Air BagsSuspension

TL* THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT THE AIR BAG WARNING LAMP ILLUMINATED. ALSO, A "CHECK THE SUSPENSION" MESSAGE ILLUMINATED INDICATING THAT THE REAR SHOCKS FAILED TO WORK. THE VEHICLE WAS TAKEN TO A DEALER, WHO INDICATED THAT THE PASSENGER SIDE RUNNING BOARD SWITCH NEEDED TO BE REPLACED. THE V…

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TL* THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT THE AIR BAG WARNING LAMP ILLUMINATED. ALSO, A "CHECK THE SUSPENSION" MESSAGE ILLUMINATED INDICATING THAT THE REAR SHOCKS FAILED TO WORK. THE VEHICLE WAS TAKEN TO A DEALER, WHO INDICATED THAT THE PASSENGER SIDE RUNNING BOARD SWITCH NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO AN AUTHORIZED DEALER SEVERAL TIMES; HOWEVER, THE TECHNICIAN WAS NOT ABLE TO REPLICATE AND DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 55,000.

NHTSA ODI #10681107

45,000 miles · Nov 12, 2014
Electronic Stability Control (esc)SteeringSuspension

THIS IS THE FIFTH (5TH) TIME IN 6 YEARS I HAVE BROUGHT MY CAR IN FOR REPAIR OF THE AIR SUSPENSION (COMPRESSOR, RIDE HEIGHT) , ALL BUT ONE OF THOSE TIMES WAS TO THE FORD LINCOLN DEALERSHIP. IT IS CLEAR THAT FORD IS AWARE OF THE PROBLEM AS THERE ARE 10 SERVICE BULLETINS ON THE 2003 AIR SUSPENSION ALONE, AS WELL AS HUNDREDS OF…

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THIS IS THE FIFTH (5TH) TIME IN 6 YEARS I HAVE BROUGHT MY CAR IN FOR REPAIR OF THE AIR SUSPENSION (COMPRESSOR, RIDE HEIGHT) , ALL BUT ONE OF THOSE TIMES WAS TO THE FORD LINCOLN DEALERSHIP. IT IS CLEAR THAT FORD IS AWARE OF THE PROBLEM AS THERE ARE 10 SERVICE BULLETINS ON THE 2003 AIR SUSPENSION ALONE, AS WELL AS HUNDREDS OF COMPLAINTS ON THE INTERNET (SEE COMPLAINTS ON EDMUNDS, EVEN FORDS WEBSITE AND SEVERAL CAR FORUMS. THESE ARE OF THE LINCOLN NAVIGATOR ONLY, NOT ITS EQUIVALENT FORD EXPEDITION, WHICH ALSO HAS HOSTS OF COMPLAINTS.) MANY OF THE COMPLAINTS STATE, MUCH LIKE MY EXPERIENCE, THAT THE DEALER CANNOT EVEN FIGURE OUT THE PROBLEM. IT IS IMPOSSIBLE TO DESCRIBE TO YOU THE DANGER INVOLVED WHEN THE SUSPENSION FAILS, ESPECIALLY AT HIGHWAY SPEEDS. THE CAR BOUNCES VIOLENTLY AND BECOMES TOTALLY UNCONTROLLABLE. *TR

NHTSA ODI #10654505

Mileage unknown · Nov 11, 2014
Electrical SystemExterior LightingSuspension

MY ROOF-MOUNTED DVD PLAYER HAS NEVER WORKED BUT STILL MAKES NOISES WHEN CAR IS CRUNK UP OR SWITCHED OFF, MY BATTERY ALL OF A SUDDEN WENT DEAD (CAR WOULD NOT CRANK), HEADLIGHTS HAVE SHORTS IN THEM...AFTER REPLACING $100 BULBS, I FOUND OUT IF I TURN THE LIGHTS OFF AND BACK ON, THE BULB WILL COME BACK ON, CHECK PARK ASSIST LIGHT A…

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MY ROOF-MOUNTED DVD PLAYER HAS NEVER WORKED BUT STILL MAKES NOISES WHEN CAR IS CRUNK UP OR SWITCHED OFF, MY BATTERY ALL OF A SUDDEN WENT DEAD (CAR WOULD NOT CRANK), HEADLIGHTS HAVE SHORTS IN THEM...AFTER REPLACING $100 BULBS, I FOUND OUT IF I TURN THE LIGHTS OFF AND BACK ON, THE BULB WILL COME BACK ON, CHECK PARK ASSIST LIGHT AND ALARMS COME ON EVERY TIME THE VEHICLE IS PUT IN REVERSE, AND MY SUSPENSION WILL NOT LET THE VEHICLE UP WHEN THE WEATHER IS COLD. *TR

NHTSA ODI #10654284

80,000 miles · Jun 18, 2014
Suspension

I BOUGHT MY USED 2003 LINCOLN NAVIGATOR IN 2008. A YEAR LATER, AIR SUSPENSION FAILURE HAPPENED SEVERAL TIMES. BOTH IN CITY AND ON HIGHWAY - VARIOUS SPEEDS - BUT THE SCARIEST AND MOST DANGEROUS WAS WHEN IT HAPPENED ON THE HIGHWAYS. CAUSED VEHICLE TO LOSE ALL SUSPENSION AND DROP EXTREMELY LOW. THE NAVI BOUNCED DANGEROUSLY AND VI…

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I BOUGHT MY USED 2003 LINCOLN NAVIGATOR IN 2008. A YEAR LATER, AIR SUSPENSION FAILURE HAPPENED SEVERAL TIMES. BOTH IN CITY AND ON HIGHWAY - VARIOUS SPEEDS - BUT THE SCARIEST AND MOST DANGEROUS WAS WHEN IT HAPPENED ON THE HIGHWAYS. CAUSED VEHICLE TO LOSE ALL SUSPENSION AND DROP EXTREMELY LOW. THE NAVI BOUNCED DANGEROUSLY AND VIOLENTLY EVEN AT VERY REDUCED SPEEDS. IT ALSO CAUSED THE NAVI TO SCRAPE THE GROUND ON A FEW OCCASIONS. HAD IT REPAIRED THREE TIMES @ $500+ AND WAS FINALLY TOLD THAT I NEEDED TO REPLACE ALL FOUR @ APPX $2000+!! I WAS ALSO TOLD THAT THIS IS A KNOWN PROBLEM WITH NAVI'S. IN ORDER TO SAVE MY TIME, MONEY AND SANITY, I OPTED FOR SPRING-SUSPENSIONS AT A THIRD OF THE COST AND HAVE NOT HAD ANY PROBLEMS WITH THOSE IN OVER 4 YEARS! I HIGHLY RECOMMEND THE SPRING-SUSPENSIONS AND STOP THE INSANITY. *TR

NHTSA ODI #10604257

102,812 miles · May 21, 2014
Suspension

TOTAL AIR SUSPENSION FAILURE. *TR

NHTSA ODI #10592969

65,319 miles · Sep 24, 2013
Suspension

TL* THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 45 MPH, A LOUD ROARING NOISE WAS HEARD FROM THE FRONT PASSENGER'S SIDE OF THE VEHICLE. THE CONTACT INSPECTED UNDER THE HOOD AND DETECTED THAT THE NOISE WAS COMING FROM THE AIR LIFT COMPRESSOR. THE NOISE COULD ALSO BE HEARD WHEN THE…

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TL* THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 45 MPH, A LOUD ROARING NOISE WAS HEARD FROM THE FRONT PASSENGER'S SIDE OF THE VEHICLE. THE CONTACT INSPECTED UNDER THE HOOD AND DETECTED THAT THE NOISE WAS COMING FROM THE AIR LIFT COMPRESSOR. THE NOISE COULD ALSO BE HEARD WHEN THE VEHICLE WAS STATIONARY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 65,319.

NHTSA ODI #10545137

80,000 miles · Oct 29, 2012
Suspension

MY AIR SUSPENSION WENT OUT THE FIRST TIME IN MARCH OF 2008, IT JUST QUIT WORKING. I THEN PAID $500 TO GET IT REPLACED. THEN AGAIN IN 2011 IT WENT OUT 2 DIFFERENT TIME, IN WHICH THIS TIME I HAD THE COMPRESSOR REBUILT. AND AGAIN IT WENT OUT OF MAY OF 2012. THIS TIME I HAVE NOT HAD IT REPLACED, I ONLY DRIVE THE SUV WHEN I HAVE TO. …

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MY AIR SUSPENSION WENT OUT THE FIRST TIME IN MARCH OF 2008, IT JUST QUIT WORKING. I THEN PAID $500 TO GET IT REPLACED. THEN AGAIN IN 2011 IT WENT OUT 2 DIFFERENT TIME, IN WHICH THIS TIME I HAD THE COMPRESSOR REBUILT. AND AGAIN IT WENT OUT OF MAY OF 2012. THIS TIME I HAVE NOT HAD IT REPLACED, I ONLY DRIVE THE SUV WHEN I HAVE TO. THERE ARE SO MANY PROBLEMS WITH THE AIR SUSPENSIONS ON THE 2003 LINCOLN NAVIGATOR THAT FORD SHOULD MAKE THE PART GOOD. *TR

NHTSA ODI #10482515

189,000 miles · Oct 9, 2012
Air BagsSuspension

THE RIGHT SIDE FRONT AIRBAG RIDE SUSPENSION BAG EXPLODED WHILE DRIVING. *TR

NHTSA ODI #10479439

50,000 miles · Dec 19, 2011
Suspension

TL* THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THE AIR SUSPENSION SYSTEM DISENGAGED AND THE VEHICLE BEGAN TO SHAKE VIOLENTLY WHENEVER HE DROVE OVER A BUMP IN THE ROAD. THE FAILURE OCCURRED WHILE DRIVING AT VARIOUS SPEEDS. THE CONTACT NOTICED THAT THE SUSPENSION SYSTEM WAS DISENGAGED WHILE THE VEHICLE WAS PARKE…

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TL* THE CONTACT OWNS A 2003 LINCOLN NAVIGATOR. THE CONTACT STATED THE AIR SUSPENSION SYSTEM DISENGAGED AND THE VEHICLE BEGAN TO SHAKE VIOLENTLY WHENEVER HE DROVE OVER A BUMP IN THE ROAD. THE FAILURE OCCURRED WHILE DRIVING AT VARIOUS SPEEDS. THE CONTACT NOTICED THAT THE SUSPENSION SYSTEM WAS DISENGAGED WHILE THE VEHICLE WAS PARKED. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AT LEAST TEN TIMES TO BE REPAIRED. THE FAILURE CONTINUED TO OCCUR. THE CONTACT ALSO STATED THAT THE FAILURE OCCURRED MORE FREQUENTLY DURING COLD WEATHER. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE, BUT OFFERED NO ASSISTANCE. THE APPROXIMATE FAILURE MILEAGE WAS 50,000.

NHTSA ODI #10440374

Mileage unknown · Oct 10, 2011
Suspension

THIS IS A COMMON PROBLEM THAT NEEDS TO BE FIXED IT'S ALL OVER THE INTERNET. THE SUSPENSION SYSTEM ON THESE ARE ALWAYS MESSED UP PLEASE FIX THIS. *KB

NHTSA ODI #10429384

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.