Owner-reported complaints naming the engine system, filed with NHTSA
Data refreshed
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components. Every record below is an owner-reported complaint about the 1999 Lincoln Navigator submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 24 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Shown in the owner’s own words, exactly as filed
IT BLOWS THE SPARK PLUGS OUT WHILE DRIVING ON NORMAL STREETS IN SEPTEMBER OR OCTOBER 2019 THE SHOP I TOOK IT TO BE REPAIRED TOLD ME THAT HAPPENS ALOT WITH THIS VEHICLE
DURING REGULAR, CASUAL VEHICLE OPERATION, ONE OF THE SPARK PLUGS FLEW OUT OF ITS SEAT. CAUSING THE VEHICLE TO SMOKE FROM THE ENGINE COMPARTMENT AND LOSE COMPRESSION. I THOUGHT THE ENGINE HAD CAUGHT FIRE AND THERE WAS NO WARNING TO THIS HAPPENING. SPARK PLUGS WERE INSTALLED PER MANUFACTURERS SPECIFICATIONS WHEN THIS INCIDENT OCCURRED. *TR
TL* THE CONTACT OWNS A 1999 LINCOLN NAVIGATOR. THE CONTACT STATED THAT THE VEHICLE CAUGHT ON FIRE WHILE PARKED WITH THE ENGINE OFF. THE DEALER WAS CONTACTED IN REGARDS TO THE FAILURE BUT DENIED ANY ASSISTANCE WITH REPAIRS. THE MANUFACTURER WAS NOT CONTACTED AND THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 99,000. THE VIN WAS NOT AVAILABLE.
WATER, VAPOR, CONDENSATION KEEPS GETTING ON TO THE COIL ON PLUG ASSEMBLY ON THE PASSENGER SIDE OF MY ENGINE CAUSING WATER BUILD UP, ELECTRICAL FAILURE, MISFIRES AND SPARK PLUG EXPLOSIONS IN TO MY ENGINE, CAUSING FRAGMENTS OF METAL AND PLASTIC TO FIRE IN TO MY ENGINE. THIS HAS HAPPENED TO ME SEVERAL TIMES NOW, BEEN REPAIRED, AND CONTINUES TO HAPPEN. DESPITE 6 SEPARATE TECHNICAL SERVICE BULLETINS, FORD / LINCOLN HAVE NOT RECALLED THIS PROBLEM WITH THE 1999 TO 2006 5.4L V8 ENGINE, LEADING TO THOUSANDS OF PEOPLE LIKE ME HAVING TO CONTINUALLY FIX THIS PROBLEM, WHICH IS CAUSED BY A DESIGN / SAFETY FLAW IN THE ENGINE / COMPONENT CONSTRUCTION. I WAS NEARLY KILLED TODAY ON THE FREEWAY BECAUSE THE TRUCK HESITATED AND MISFIRED WHILE I WAS GOING UP A LARGE HILL, STUCK BETWEEN TWO SEMI-TRUCKS AND I COULDN'T MOVE OUT OF THE WAY DUE TO FAILURE TO ACCELERATE. *TR
TL* THE CONTACT OWNS A 1999 LINCOLN NAVIGATOR. THE CONTACT STATED THAT THE SPARKS PLUGS WERE BECOMING OVERHEATED AND POPPING OUT FROM UNDER THE HOOD, AND WERE ALSO BURNING THE ATTACHED COIL. IN ADDITION, THE CONTACT STATED THAT THE SUSPENSION WOULD INTERMITTENTLY FAIL AND WOULD NOT INFLATE. THE CONTACT WOULD SHUT OFF THE VEHICLE FOR A FEW MOMENTS TO ALLOW THE SUSPENSION TO RESET ITSELF. THE VEHICLE WAS NEITHER INSPECTED FOR THE FAILURE NOR REPAIRED. THE FAILURE MILEAGE WAS 220,000 AND THE CURRENT MILEAGE WAS 240,000.
1999 LINCOLN NAVIGATOR-SPARK PLUG BLOW OUT. *TR
TL* THE CONTACT OWNS A 1999 LINCOLN NAVIGATOR. WHILE TRAVELING AT 70 MPH, THE CONTACT NOTICED THE SMELL OF SMOKE INSIDE THE CABIN. THE CONTACT PARKED THE VEHICLE AND SEVERAL HOURS LATER, THE VEHICLE CAUGHT ON FIRE FROM UNDER THE HOOD. THE FIRE DEPARTMENT WAS CALLED TO EXTINGUISH THE FIRE. A REPORT WAS NOT FILED. THE VEHICLE WAS NOT DIAGNOSED FOR THE FAILURE. THE CURRENT AND FAILURE MILEAGES WERE 100,000.
#1 SPARK PLUG ON 1999 NAVIGATOR BLEW OUT ON RT 80 IN PA 400 MILES FROM MY HOME. I HAD TO RENT A U-HAUL TRUCK AND TRAILER TO TOW MY NAVIGATOR HOME AT THE COST OF $600. I HAD TO LEAVE MY RACE CAR AND TRAILER IN PA. I DON'T KNOW HOW I AM GOING TO GO GET IT. I HAVE NO TOW VEHICLE. *TR
MY LINCOLN NAVIGATOR HAS BEEN SITTING THERE FOR SO LONG SINCE MY WIFE AND I CAN NOT AFFORD TO FIX IT. MY 1993 FORD EXPLORER HAS BEEN BROKEN DOWN ON US LIKE YOU WOULD NOT IMAGINE. HELP IS NEEDED PLEASE. *TR
TL*THE CONTACT OWNS A 1999 LINCOLN NAVIGATOR. WHILE PROCEEDING TO ENTER THE VEHICLE, THE CONTACT NOTICED FLAMES COMING FROM THE PASSENGER SIDE OF THE HOOD. SHE WAS UNABLE TO EXTINGUISH THE FIRE AND CALLED THE FIRE DEPARTMENT. THE FIRE DEPARTMENT EXTINGUISHED THE FLAMES AND FILED A REPORT. THERE WERE NO FAILURES PRIOR TO THIS INCIDENT. THE CONTACT CALLED HER INSURANCE COMPANY TO FILE A CLAIM AND WAS INFORMED THAT AN INSURANCE ADJUSTER WOULD INSPECT THE VEHICLE. THE CAUSE OF THE FAILURE WAS UNDETERMINED. THE CONTACT IS IN THE PROCESS OF NOTIFYING THE MANUFACTURER. THE FAILURE MILEAGE WAS 190,000.
TOTAL FAILURE OF A/C SYSTEM DUE TO MAIN A/C HOSE. *TR
TL*THE CONTACT OWNS A 1999 LINCOLN NAVIGATOR. AFTER DRIVING AND PARKING THE VEHICLE, IT EXPLODED. THE CONTACT NOTICED BLACK SMOKE AND A FIREBALL, AND THEN THE WINDOWS BLEW OUT. THE POLICE OFFICER STATED THAT THE ORIGIN OF THE FAILURE COULD NEVER BE DETERMINED BECAUSE EVERYTHING WAS BURNED TO THE GROUND, INCLUDING THE TRANSMISSION AND ENGINE. IT WAS NOTICED, HOWEVER, THAT THE FIRE SEEMED TO HAVE STARTED FROM THE FRONT END. BEFORE SHE EXITED THE VEHICLE, THE CONTACT DID NOT NOTICE ANY WARNING LIGHTS OR SIGNS OF OVERHEATING PRIOR TO THE MALFUNCTION. A POLICE REPORT WAS FILED. SHE CONSULTED THE MANUFACTURER AND WAS ADVISED TO CALL BACK. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 140,000.
THE VEHICLE STALLS AT 45 MPH OR MORE WHEN ON THE HIGHWAY. TAKEN IN FOR TESTING AND RESULTS SHOW THAT THE COMPUTER HAS NO CODES, WHICH RECOGNIZES FAILURE. MANUFACTURER HAS BEEN CONTACTED AND IS AWARE OF THE PROBLEM. *JB *NM
OIL ODOR WAS COMING FROM THE VENTS WHILE DRIVING. ALSO, A LIQUID WAS LEAKING FROM UNDERNEATH THE VEHICLE. CONSUMER TOOK VEHICLE TO THE DEALER FOR INSPECTION, AND MECHANIC DETERMINED THAT THE CYLINDER HEAD AND HEAD GASKET NEEDED TO BE REPLACED. *AK
WHILE DRIVING UNDER 40 MPH THE ENGINE STARTED VIBRATING AND HESITATING. THE CHCK ENGINE LIGHT WENT ON. ACCORDING TO LINCOLN, THE ENGINE NEEDS TWO NEW CYLINDER HEADS. THE CAR HAS LESS THAN 64,000 MILES.*AK
WHILE DRIVING AT VARIOUS SPEEDS ENGINE WILL STALL WITHOUT WARNING. DEALER NOTIFIED.*AK VEHICLE WOULD STALL AS SOON AS CONSUMER TAKES OFF FOOT FROM ACCELERATOR PEDAL. DEALER REPAIRED THE VEHICLE; HOWEVER, CONSUMER HAD CONCERNS REGARDING THE INCIDENT WILL HAPPEN AGAIN. *LA
MY 1999 LINCOLN NAVIGATOR [XXX] WITH 5.4L A ENGINE WITH 80,000 MILES. THE SPARK PLUG BLEW OUT WHILE DRIVING ON THE HIGHWAY. THE HEAD HAD TO BE REPLACED. THE MECHANIC SAID THAT HE RECENTLY HAD A NUMBER OF CUSTOMERS WITH SIMILAR PROBLEMS AND THOUGHT THE PROBLEM WAS DUE TO A FAULTY DESIGN WHICH UTILIZED TOO FEW THREADS ON AN ALUMINUM HEAD. *JS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
CONSUMER NOTICED SMOKE COMING FROM UNDER THE HOOD. CONSUMER PULLED OVER, POPPED HOOD, AND NOTICED OIL LEAKING ONTO THE MANIFOLD. DEALER WAS CONTACTED. CONSUMER FOUND TECHNICAL SERVICE BULLETIN 03-6-2002 FROM 03/31/2003 THAT EXPLAINED THE EXACT PROBLEM. *AK
SPARK PLUGS FAILED. AS A RESULT, VEHICLE JERKED FORWARD WITHOUT WARNING. *AK COOLANT LEAKED TWICE IN THE PAST. THE RADIATOR ASSEMBLY WAS REINSTALLED. THE LEFT FRONT WINDOW SQUEAKED. THE TRIM ON THE FRONT DOOR PANEL WAS REMOVED AND REINSTALLED. THE ENGINE LIGHT HAD COME ON AND THE ENGINE HAD RUN ROUGH. THE SERVICE DEALER REPLACED THE FAULTY COIL PACK ON THE #4 CYLINDER. THE HEATER HOSE WAS REPLACED DUE TO LEAKAGE. THE HEATER DID NOT BLOW AIR AND DISPLAYED A BURNING SMELL. *SC
I OWN A 1999 LINCOLN NAVIGATOR (FORD ENGINE 5.4L DOHC) ONLY 52000 MILES. THE SPARK PLUG #4 BLOW OUT OF THE ENGINE WHILE DRIVING ON THE HIGHWAY. I'VE SEEN MANY OF THE FORD EXPEDIGION AND LINCOLN NAVIGATOR OWNERS EXPERIENCE THIS SAME ISSUE. THERE IS OBVIOUSLY A DEFAULT WITH THERE ENGINE FOR THESE MODELS AND THUS SHOULD BE RECALLED.*AK
CONSUMER STATE WHILE VEHICLE WAS COLD WHEN DEPRESSING THE BRAKES WITHOUT ANY INDICATION VEHICLE ENGINE WOULD STALL. VEHICLE WAS SERVICE BY DEALER, TECHNICIAN REPLACE IDLE AIR CONTROL. PLEASE PROVIDE FURTHER INFORMATION. TS
LINCOLN NAVIGATOR STALLING AT RANDOM TIMES AND AT RANDOM SPEEDS...NO WARNING LIGHTS TO ALERT ME OF PROBLEM. THIS VEHICLE HAS BEEN IN THREE TIMES FOR THE SAME PROBLEM...AND WAS JUST TOWED IN FOR THE FOURTH TIME, SAME PROBLEM.THE VEHICLE HAS A SERIOUS SAFETY DEFECT AND I AM REFUSING TO DRIVE IT. DEALER CANNOT PINPOINT THE PROBLEM AND ADMITTED THAT THERE IS SOME SORT OF UNKNOWN COMPUTER GLITCH. BOTH THE DEALER AND FORD MOTOR CO HAVE MADE THIS PROCESS VERY DIFFICULT AND I AM DEMANDING A FULL REFUND UNDER THE LEMON LAW.*AK
WHILE DRIVING VEHICLE SHUTDOWN WITHOUT ANY PRIOR WARNING. VEHICLE DID NOT INDICATE ANY WARNING LIGHT ON REPORTED FAILURE. VEHICLE WAS CURRENTLY AT THE DEALERSHIP FOR REPAIRS. AT THIS POINT, DEALERSHIP WAS NOT AWARE OF ANY PROBLEMS, AND HAD NO SOLUTION. *AK *ML
WHEN CONSUMER MAKES A STOP AND THEN PROCEEDS CAR WOULD STALL IN THE MIDDLE OF TRAFFIC. CONSUMER TOOK CAR TO DEALER, AND THE DEALER SAID THAT HE DIDN'T SEE A PROBLEM IN HIS COMPUTER, AND THAT HE COULD NOT FIX IT UNLESS IT WAS IN THE COMPUTER. *AK
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
Data on this page last refreshed .