FaultScore

1999 Mercury Grand Marquis engine problems

34 of the 202 complaints about the 1999 Mercury Grand Marquis are about the engine — 17% of everything reported for this model year. Half of the failures with a mileage on record happened before 101,500 miles.

C

34

Complaints

0

Crashes

1

Fires

1

Injuries

Exactly what failed

Engine AND Engine Cooling 11 32.4%
Manifold/Header/Muffler/Tail Pipe 7 20.6%
Engine 7 20.6%
Engine 5 14.7%
Gasoline 2 5.9%
Cooling System 2 5.9%

Engine & Cooling across every Mercury Grand Marquis year

1991 11 2.4%
1992 21 4.6%
1994 18 4.0%
1996 88 19.3%
1997 130 28.6%
1998 30 6.6%
1999 34 7.5%
2000 25 5.5%
2001 29 6.4%
2002 12 2.6%
2003 18 4.0%
2004 14 3.1%
2005 14 3.1%
2006 11 2.4%

What owners said

Filed with NHTSA, in their own words.

at 120,000 miles Kissimmee, FL

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

The contact owns a 1999 Mercury Grand Marquis. The contact stated that the vehicle had a leaking intake manifold. The vehicle was taken to an independent mechanic and diagnosed that the intake manifold needed to be replaced. The vehicle was not repaired. The dealer and manufacturer were made aware of the failure but informed the contact that there was no recall associated with the VIN. The failure mileage was approximately 120,000.

NHTSA complaint #11448881 — an unverified report by a vehicle owner.

at 112,004 miles NEW Paris, OH

ENGINE

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

NHTSA complaint #11195369 — an unverified report by a vehicle owner.

at 135,000 miles St.clair, MI

ENGINE

TL* THE CONTACT OWNS A 1999 MERCURY GRAND MARQUIS. WHILE THE VEHICLE WAS PARKED WITH THE ENGINE RUNNING, THE CONTACT SHIFTED INTO REVERSE AND NOTICED STEAM COMING FROM THE HOOD. THE VEHICLE WAS THEN SHIFTED BACK INTO PARK AND TURNED OFF THE ENGINE. UPON OPENING THE HOOD, THE CONTACT NOTICED THAT A PART OF THE MANIFOLD WAS MISSING THE THERMOSTAT. THE CONTACT WAS UNSURE OF ANY WARNING INDICATORS ILLUMINATING. THE CONTACT WENT TO BILL MACDONALD FORD (1200 S CARNEY DR, ST CLAIR, MI 48079, (810) 329-6601) AND WAS INFORMED THERE WERE NO RECALLS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE FAILURE MILEAGE WAS APPROXIMATELY 135,000.

NHTSA complaint #11060700 — an unverified report by a vehicle owner.

at 185,000 miles Three Rivers, MI

ENGINE

PLASTIC INTAKE MANIFOLD FAILED, ANTIFREEZE LEAKING FROM AROUND THERMOSTAT DUE TO THIS FAILURE AND LEAKING INTO COIL PACKS AND CAUSING MAJOR MISFIRE IN MOTOR. HAPPENED SUDDENLY, NO INDICATION OF LEAK PRIOR TO THIS FAILURE. WAS DRIVING WHEN THIS HAPPENED AND HAD TO CALL FOR HELP TO GET VEHICLE BACK HOME, AND NOW CAN'T DRIVE IT . COST TO FIX IS EXPENSIVE, AND THE CAR RAN GREAT UNTIL THIS HAPPENED. SOUNDED LIKE I HAS THROWN A ROD, POPPING LOUDER ON EXCELERATION, SO I IMMEDIATELY PARKED IT AND TURNED OFF THE MOTOR.

NHTSA complaint #10979720 — an unverified report by a vehicle owner.

at 118,000 miles Ooltewah, TN

ENGINE

INTAKE MANIFOLD FAILED (BURNED AND DISINTEGRATED IN THE AREA OF THE THERMOSTAT ) AND HAD TO BE REPLACED AT CONSIDERABLE EXPENSE . PRESENTLY THE SPEEDOMETER FAILS INTERMITTENTLY DROPPING TO ZERO AT RANDOM MOMENTS. MOST IMPORTANTLY THE LIGHTS CUT OUT INTERMITTENTLY USUALLY WHEN THE HEAT IS ON AND ON LONGER TRIPS. ALSO, MOST TIMES IT HAS HAPPENED WHEN IT HAS BEEN RAINING AND COLDER. DROVE UPWARDS OF 40 MILES WITH THE HEADLIGHTS CUTTING OUT INTERMITTENTLY IN THE RAIN AND COLD, PROBLEM HAS CONTINUED TO RECUR BUT SEEMS TO BE RELATED POSSIBLY TO HAVING THE HEAT ON. I BELIEVE THE LIGHTING CONTROL MODULE IS LOCATED NEAR A HEATING OUTLET AND MAY BE SUFFERING A FAILURE AS A RESULT BUT THIS IS JUST SPECULATION. ALSO, PREVIOUSLY WHEN I HAD PULLED INTO A REST AREA FOR AWHILE, AFTER COOLING DOWN, THE PROBLEM WENT AWAY FOR A LITTLE WHILE THEN RESUMED AFTER ABOUT TEN MILES WITH THE HEAT ON. I BELIEVE IT IS BEING CAUSED BY THE EXCESSIVE HEAT THE LCM IS SUBJECTED TO BY VIRTUE OF THE AREA IN WHICH IT IS INSTALLED. THE LIGHTING CONTROL MODULE IS OF MOTOROLA MANUFACTURE WITH SIEMANS RELAYS INSIDE. THE PART HAS NUMEROUS NUMBERS ON IT , MOST PROMINENTLY: XW7T-13C788-AA , 6MX2794A01, 990429A, AND LIGHTING CONTROL 95M .OTHERS ONLINE WITH SIMILAR VEHICLES (CROWN VICTORIAS) AND OF OTHER MODEL YEARS MANUFACTURED BY FORD HAVE REPORTED SIMILAR PROBLEMS AND THAT REPLACING THE RELAYS HAS RESOLVED THE ISSUE. I DO NOT KNOW THAT THIS PART IS THE SOURCE OF THE PROBLEM BUT SUSPECT IT AS MANY OTHERS ONLINE HAVE REPORTED THAT THIS PART WAS THE SOURCE OF THEIR PROBLEMS.

NHTSA complaint #10972145 — an unverified report by a vehicle owner.

at 108,000 miles Beverly Hills, FL

ENGINE AND ENGINE COOLING

MY CAR WAS IN DRIVE AT A BUSINESS TRAFFIC INTERSECTION DRIVE WAY ON A SLIGHT HILL WITH THE BRAKES ON WHEN THE ENGINE SURGED AND THE CAR STARTED TO REVERSE WHILE STILL IN DRIVE. I HAD TO PUT CONSIDERABLE PRESSURE ON THE BRAKES TO STOP IT. I CHECKED AND THE SHIFT LEVER WAS STILL IN DRIVE. MY CAR HAS BEEN PROPERLY MAINTAINED AND WAS RECENTLY SERVICED WITH ALL REQUIRED SERVICES DONE. THIS REALLY SCARED ME AND I WOULD HAVE CRASHED INTO A CAR IF IT WAS BEHIND ME. FORD SHOULD LOOK INTO THIS SAFETY PROBLEM.

NHTSA complaint #10663813 — an unverified report by a vehicle owner.

at 98,000 miles Beverly Hills, FL

ENGINE

DRIVING ON THE HWY AND THE CAR STARTED TO OVERHEAT WITH HOT STEAM SHOOTING OUT FROM THE ENGINE AND IT ALSO HAD A STRONG COOLANT SMELL. THE CAR COULD NOT BE DRIVEN UNTIL L IT HAD $1,500 IN REPAIRS FOR A KNOWN, LEAKING PLASTIC MANIFOLD ISSUE. THIS FAILED PART CRACKS AND LEAKS INTO THE HOT ENGINE AREA. AND, FORD HAD REDESIGNED THE FAILED PART. ADDITIONALLY, FORD HAD ONCE OFFERED FREE FIXES FOR A FEW MONTHS FOR POLICE CARS AND TAXI CABS WITH THE SAME ENGINES UNDER A CLASS ACTION LAW SUIT BUT DIDN'T TELL THE OWNERS ABOUT. THOUSANDS OF CONSUMERS WERE RIPPED OFF BECAUSE FORD SHOULD HAVE FIXED THIS ISSUE UNDER THE CLASS ACTION RECALL. BUT THEY DIDN'T BOTHER NOTIFY ANYONE ABOUT THE THREE MONTH RECALL WINDOW. IN CHECKING THE NHTSA RECORDS, THERE ARE THOUSANDS OF US WITH THE SAME REPORTED PROBLEM. PLEASE TAKE SOME CORRECTIVE ACTION FOR US.

NHTSA complaint #10628275 — an unverified report by a vehicle owner.

at 114,000 miles Huntington, WV

ENGINE

TL* THE CONTACT OWNS A 1999 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WATER WAS LEAKING FROM UNDER THE VEHICLE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSIS WHERE THE CONTACT WAS ADVISED THAT THE INTAKE MANIFOLD WOULD HAVE TO BE REPLACED BECAUSE IT WAS FRACTURED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 114,000.

NHTSA complaint #10553218 — an unverified report by a vehicle owner.

at 191,800 miles Canton, PA

ENGINE

PLASTIC INTAKE MANIFOLD ON 4.6 LITER ENGINE FOUND TO BE CRACKED AND LEAKING COOLANT. THE LOSS OF COOLANT RESULTS IN THE VEHICLE BECOMING DISABLED AND/OR UNSAFE TO DRIVE. LEAKING COOLANT IS ALSO TOXIC TO CHILDREN AND ANIMALS, AS THEY ARE MORE LIKELY TO BE IN CONTACT WITH COOLANT ON THE GROUND OR GARAGE FLOOR. THIS DEFECTIVE PART (PLASTIC INTAKE MANIFOLD) WAS IDENTIFIED BY FORD MOTOR COMPANY AS DEFECTIVE AND QUIETLY SETTLED IN A CLASS ACTION LAWSUIT. REPLACEMENT PARTS HAVE BEEN REDESIGNED. HOWEVER, FORD DID NOT CONTACT CUSTOMERS WITH THIS MODEL CAR TO NOTIFY THEM OF THE DEFECTIVE PART OR TO OFFER RESOLUTION. EARLIER MODELS OF THIS ENGINE (AND ALL OTHER ENGINES) USED A METAL INTAKE MANIFOLD. THESE WERE NOT PROBLEMATIC. INTAKE MANIFOLDS ARE NOT A MOVING PART OF THE VEHICLE ENGINE, AND ARE NOT SUBJECT TO WARE. THE PLASTIC MATERIAL USED IN THE PROBLEM MANIFOLDS ARE NOT ABLE TO WITHSTAND THE NORMAL TEMPERATURE FLUCTUATIONS OF A VEHICLE ENGINE AND ARE THEREFORE PRONE TO FAILURE. FORD HAS BEEN CONTACTED IN AN ATTEMPT TO RESOLVE THIS ISSUE, BUT THE COMPANY HAS DECLINED TO OFFER ANY RESOLUTION WHATSOEVER.

NHTSA complaint #10545549 — an unverified report by a vehicle owner.

at 90,200 miles Plano, TX

ENGINE AND ENGINE COOLING

TL* THE CONTACT OWNS A 1999 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE VEHICLE WOULD STALL SPORADICALLY AND WITHOUT WARNING. A LOCAL MECHANIC DIAGNOSED THAT THE INTAKE MANIFOLD WOULD NEED TO BE REPLACED. THE DEALER WAS CONTACTED, BUT DENIED ANY ASSISTANCE WITH REPAIRS TO THE DEFECT. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE AND THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 90,200 AND THE CURRENT MILEAGE WAS 91,000.

NHTSA complaint #10440044 — an unverified report by a vehicle owner.

at 80,000 miles Slidell, LA

ENGINE AND ENGINE COOLING

VEHICLE WOULD SHAKE VIOLENTLY AT ANY SPEED FROM 45-80MPH. TOOK TO A MECHANIC SAID THE FRONT END NEEDED TO BE REPLACED. $800.00 LATER IT STILL DID IT, THEN TOOK BACK SAID THE TIRES NEEDED TO BE REPLACED ALTHOUGH WE HAD 80,000 MILE TIRES, AND ONLY HAD 35,000 MILES PUT ON THEM. REPLACED THE TIRES FOR $600.00. STILL SHOOK, TOOK TO A DIFFERENT MECHANIC SAID IT WAS THE TRANSMISSION FAILING. DURING SCHEDULED MAINTENANCE FOUND CRACKED INTAKE MANIFOLD, ANTIFREEZE AND OIL IN SPARK PLUGS, CLEANED OUT CHANGED SPARK PLUGS, RAN FINE UNTIL THE MANIFOLD LEAKED MORE COOLANT INTO THE SPARK PLUGS AND NOW WE ARE AT SQUARE ONE. RESEARCHED ONLINE FOUND A BUNCH OF PLACES SAYING IT WAS RECALLED, WHEN I CALLED THE DEALERSHIP THEY SAID NO RECALLS. PRICE OF REPLACING THE PART WAS $615.00 IF I HAD ONE ALTERNATOR, OR $650.00 IF I HAD ANOTHER.

NHTSA complaint #10428282 — an unverified report by a vehicle owner.

at 183,172 miles Mesquite, TX

ENGINE AND ENGINE COOLING

WHILE DRIVING, (AT ANY SPEED)THE CAR'S ENGINE SHUT DOWN SEVERAL TIMES. EACH TIME I HEARD A "BEEP" AND WARNING LIGHTS CAME ON- CHECK ENGINE, TRACTION CONTROL AND ABS. AFTER A MINUTE OR SO, THE ENGINE WOULD START NORMALLY. THE ENGINE SHUT DOWN 6 TIMES ! EACH TIME I HEARD THE "BEEP" AND WARNING LIGHTS ILLUMINATED INCLUDING TRACTION CONTROL AND CHECK ENGINE LIGHTS. I WAS ON MY WAY HOME WITH MY NEWBORN IN THE CAR,IT JUST CUTS OFF, AND IT NEARLY CAUSED AN ACCIDENT ON THE HIGHWAY AS MANY OTHER CARS ALMOST RAN INTO ME BECAUSE THE CAR SHUT OFF WHILE I WAS DRIVING ON THE HIGHWAY. THIS IS A VERY DANGEROUS CONDITION, ESPECIALLY AS POWER STEERING AND POWER BRAKES ARE LOST ON SHUT-DOWN. I AM LITERALLY AFRAID OF DRIVING MY VEHICLE AS NO ONE KNOWS WHAT IS WRONG WITH MY VEHICLE. THIS NEEDS TO BE ADDRESSED ASAP AS SOMEONE COULD GET SERIOUSLY HURT OR KILLED. INCLUDING CHILDREN!....BY THE WAY, THIS HAS BEEN HAPPENING ALL WEEK.

NHTSA complaint #10386939 — an unverified report by a vehicle owner.

at 65,000 miles Jackson, MS

ENGINE AND ENGINE COOLING:COOLING SYSTEM

I RECEIVED NOTICED OF INTAKE MANIFOLD ON FORDS PASSENGERS CARS FAILURE AND OF THE SETTLEMENT OFFERED TO REPAIR AND WARRANT SAID INTAKE MANIFOLD. AT THAT TIME I OWNED A 1999 GRAND MARQUIS LS. BEFORE GETTING SAID NOTICE I HAD TOOK MY CAR TO LANDERS FORD DEALERSHIP IN JACKSON,MS HWY 80 WEST WHERE THE INTAKE MANIFOLD WAS REPAIRED BY DEALERSHIP BECAUSE OF FAILURE OUT OF POCKET EXPENSE COST ME $879.00 WHEN I RECEIVED NOTICED OF LAWSUIT AND OR CLAIMS ON SAID INTAKEMANIFOLD I RETURNED TO THAT DEALERSHIP BUT WAS TURNED AWAY WITH NO RESOLVE SAID DEALERSHIP WENT OUT OF BUSINESS MONTHS LATER NEVER TO COMPENSATE ME FOR OUT OF POCKET EXPENSE OR GIVING ME EXTENDED WARRANTY INFO.FORD CORPORATE OFFICE REFUSE TO HELP AFTER I EXPLAIN I HAD MY RECEIPTS TO SAID CLAIM AND GAVE ME NO LEAD WAY OF WHAT TO DO.NOW I AM STUCK WITH NO WARRANTY NO OUT OF POCKET COST AND THE SAME CAR NEEDING THE SAME WORK DONE AGAIN HERE IN 2011 FORD HANDLED THIS LAWSUIT CLAIMS VERY VERY POORLY AND INFO HAS IT THAT FORD HAS STOP MAKING THE GRAND MARQUIS AND CROWN VICTORIA.

NHTSA complaint #10380003 — an unverified report by a vehicle owner.

at 120,000 miles Penn YAN, NY

ENGINE AND ENGINE COOLING:ENGINE

CRACKED THE AIR INTAKE ON MY 1999 MERCURY GRAND MARQUIS. IT WAS MADE OUT OF CHEAP PLASTIC. I HAD TO STEP ON THE THROTTLE TO GET OUT OF THE WAY, AND MY CAR STARTED STEAMING. COME TO FIND OUT, THE INTAKE MANIFOLD CRACKED. IT'S ONLY $300 FOR THE PART, NOT INCLUDING LABOR.

NHTSA complaint #10377186 — an unverified report by a vehicle owner.

at 68,000 miles Macomb, MI

ENGINE AND ENGINE COOLING:ENGINE

FATIGUE CRACKING OF THE COOLANT CROSSOVER PASSAGE OF THE ALL NYLON-COMPOSITE INTAKE MANIFOLD ON OUR 1999 MERCURY GRAND MARQUIS. (VIN # [XXX]). COMPONENT HAS FAILED, RESULTING IN REPLACEMENT, COSTING $888.00 COMPONENT WAS SUBJECT TO RECALL (HTTP://FORDMANIFOLDSETTLEMENT.COM/NOTICE.HTML). CONTACTED FORD CUSTOMER CARE PHONE LINE. THEY HAVE REFUSED TO COMPENSATE US OR THIS REPAIR. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA complaint #10321044 — an unverified report by a vehicle owner.

at 100,000 miles Lynn Haven, FL

ENGINE AND ENGINE COOLING

WE NEVER RECEIVED NOTIFICATION OF THE MANIFOLD DEFECT AND RECENTLY DISCOVERED THAT THERE WAS A RECALL. OUR CAR IS A 1999 GRAND MARQUIS WITH CRACKED MANIFOLD INTAKE. WE TOOK IT TO THE LOCAL DEALER AND THEY SAID THAT THEY CANNOT DO ANY WARRANTY ADJUSTMENTS SINCE THE DEADLINE WAS EXHAUSTED. WE CALLED SUMMER OF 2009 TO LET THEM BE AWARE OF THIS PROBLEM. THOUGH THEY WERE NICE, THEY WERE STILL FIRM ON DENYING US REPAIR OR ADJUSTMENTS UNDER THE LAW SUIT AND RECALL. NOW WHAT DO WE DO SINCE WE NEVER RECEIVED NOTIFICATION NOR WERE WE AWARE OF ANY PROBLEM WITH THE CAR?

NHTSA complaint #10303603 — an unverified report by a vehicle owner.

at 54,300 miles Brick, NJ

ENGINE AND ENGINE COOLING

TL* THE CONTACT OWNS A 1999 MERCURY GRAND MARQUIS. HE COULD NOT ACCELERATE PAST 30-35 MPH. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSTIC TESTING. THE TECHNICIAN STATED THAT THE FAILURE WAS BECAUSE OF A PLASTIC INTAKE MANIFOLD. THE VEHICLE WAS REPAIRED WITH THE REPLACEMENTS OF A METAL INTAKE MANIFOLD AND SPARK PLUGS. THE FOLLOWING DAY AFTER THE SERVICE REPAIR, HE EXPERIENCED ROUGH IDLING WHILE STARTING THE ENGINE COLD. THE AUTHORIZED DEALER WAS NOTIFIED OF THE FAILURE, BUT NO REMEDY WAS AVAILABLE. THE FAILURE MILEAGE WAS 54,300. THE CURRENT MILEAGE WAS UNAVAILABLE.

NHTSA complaint #10289817 — an unverified report by a vehicle owner.

at 52,000 miles Clovis, CA

ENGINE AND ENGINE COOLING

CRACKED INTAKE MANIFOLD ON A 1999 MERCURY GRAND MARQUIS WITH ONLY 52000 MILES ON IT. COST $1200 TO REPAIR. WAS NOT NOTIFIED OF RECALL. 52000 MILES IS ONLY ABOUT 4.3 YEARS OF ACTUAL USE. IT IS UNFAIR THAT LOW MILEAGE DRIVERS SHOULD BE PUNISHED FOR CONSERVING ENERGY.

NHTSA complaint #10253424 — an unverified report by a vehicle owner.

at 87,500 miles Carmel, CA

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

TL*THE CONTACT OWNS A 1999 MERCURY GRAND MARQUIS. WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE HESITATED, STALLED, AND THE CHECK ENGINE LIGHT ILLUMINATED ON THE INSTRUMENT PANEL. THE VEHICLE ALSO BEGAN TO LOOSE COOLANT. THE VEHICLE WAS TAKEN TO A DEALER AND THEY DISCOVERED THAT THE INTAKE MANIFOLD WAS CRACKED. THERE WAS NO RECALL ON THE INTAKE MANIFOLD. THE CURRENT MILEAGE WAS 88,000 AND FAILURE MILEAGE WAS 87,500.

NHTSA complaint #10215854 — an unverified report by a vehicle owner.

at 150,000 miles Salisbury, NC

ENGINE AND ENGINE COOLING

I NOTICED COOLANT LEAKING FROM SOMEWHERE IN THE ENGINE COMPARTMENT, BUT INITIALLY HAD TROUBLE FINDING WHERE THE LEAK WAS COMING FROM. I FINALLY DISCOVERED THAT THE INTAKE MANIFOLD WAS CRACKED AT THE PLASTIC THERMOSTAT HOUSING.

NHTSA complaint #10209851 — an unverified report by a vehicle owner.

at 123,052 miles Rockingham, NC

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

TL*THE CONTACT OWNS A 1999 MERCURY GRAND MARQUIS. WHILE DRIVING 45 MPH, THE TEMPERATURE GAUGE ON THE VEHICLE BEGAN TO INCREASE. THE CONTACT PULLED OVER TO ALLOW THE VEHICLE TO COOL BEFORE DRIVING HOME. ONCE SHE ARRIVED HOME, SHE NOTICED SMOKE RISING FROM THE FRONT END OF THE VEHICLE. THIS SAME FAILURE HAS PREVIOUSLY OCCURRED TWICE. THE VEHICLE WAS TAKEN TO A MECHANIC AND HE STATED THAT THE INTAKE MANIFOLD NEEDED TO BE CHANGED. THE CURRENT AND FAILURE MILEAGES WERE 123,052.

NHTSA complaint #10202211 — an unverified report by a vehicle owner.

at 138,000 miles Great Falls, MT

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

HAD SPARK PLUGS REPLACED. ONE PLUG EXPLODED. WAS TOLD BY FORD DEALERSHIP SERVICE MECHANIC THE INTAKE MANIFOLD WAS CRACKED. CAR WAS RUNNING FINE BEFORE PLUGS WERE REPLACED. INTAKE MANIFOLD IS PLASTIC. (THIS WAS AN ISSUE WITH THE 1997 MODEL.) DID THE REPAIRMAN CRACK THE MANIFOLD? WHY IS REPLACEMENT PART STILL PLASTIC? FORD/MERCURY PRICE FOR PART IS $598.06; NAPA IS $281.00.

NHTSA complaint #10189687 — an unverified report by a vehicle owner.

at 77,980 miles SUN Lakes, AZ

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

DT*: THE CONTACT STATED WHILE DRIVING 40 MPH, THE ENGINE HESITATED AND IDLED BADLY AT A STOP. THE CONTACT REPLACED THE FUEL FILTER, BUT PROBLEM CONTINUED. WHEN TAKEN TO AN INDEPENDENT SERVICE DEALER, THE DIAGNOSTICS SHOWED THE MANIFOLD WAS CRACKED. THE MANUFACTURER WAS NOTIFIED. THE CONSUMER STATED THE VEHICLE WOULD SJIP AND JUMP. UPDATED 12/18/06.

NHTSA complaint #10174876 — an unverified report by a vehicle owner.

at 158,200 miles Ashton, IL

ENGINE AND ENGINE COOLING

CRACKING PLASTIC INTAKE MANIFOLD ON MERCURY V-8 CAR OVER HEATS DUE TO WATER/COOLANT LEAKING LOOKING INTO GETTING FIXED.

NHTSA complaint #10161231 — an unverified report by a vehicle owner.

at 103,000 miles Chickasha, OK

ENGINE AND ENGINE COOLING:COOLING SYSTEM

I HAVE A 1999 MERCURY GRAND MARQUIS. THE PLASTIC INTAKE MANIFOLD CRACKED. I HAVE LEARN THAT THIS IS A PROBLEM ALOT OF PEOPLE HAVE WITH THE FORD VEHICLES.

NHTSA complaint #10129462 — an unverified report by a vehicle owner.

at 94,000 miles Phoenix, AZ 1 injured

ENGINE AND ENGINE COOLING

COMPLETE CRACKING OF PLASTIC INTAKE MANIFOLD CAUSING COMPLETER LOSS OF COOLANT AND $1400 REPAIR WITH THE NEW REPLACEMENT METAL MANIFOLD.

NHTSA complaint #10121090 — an unverified report by a vehicle owner.

at 680,000 miles Irvine, CA

ENGINE AND ENGINE COOLING:ENGINE

MY 1999 MERCURY GRAND MARQUIS HAS A PERSISTANT OIL LEAK FROM THE RIGHT REAR OF THE ENGINE HEAD THAT IS EXACTLY AS DESCRIBED IN FORD MOTOR COMPANY'S TECHNICAL SERVICE BULLETIN 02-22-07.*AK THE DEALERSHIP, IRVINE LINCOLN MERCURY, HAS HAD THREE TRIES TO CORRECT THE PROBLEM UNDER WARRANTY AND HAVE FAILED TO SUCCEED. THE WARRANTY EXPIRED LAST MONTH AND NOW THEY SAY THAT I WILL HAVE TO PAY TO HAVE THE PROBLEM REPAIRED EVEN THOUGH THE UNRESOLVED COMPLAINT CONDITION GOES BACK WELL INTO THE WARRANTY PERIOD.

NHTSA complaint #10118112 — an unverified report by a vehicle owner.

at 60,000 miles Charlotte, NC

ENGINE AND ENGINE COOLING:ENGINE

WHILE DRIVING 55 MPH A LOUD NOISE WAS HEARD COMING FROM THE FRONT. VEHICLE THEN STALLED. CONSUMER RESTARTED THE VEHICLE AND PULL OVER. THEN, CONSUMER NOTICED THAT OIL LEAKED UNDERNEATH. CONSUMER DROVE VEHICLE TO THE DEALER FOR INSPECTION, AND MECHANIC DETERMINED THAT THE CYLINDER HEAD CRACKED, AND NEEDED TO BE REPLACED (20794 MILES). *AK RECENTLY THE CONSUMER NOTICED ANOTHER OIL LEAK WHICH APPEARED TO BE THE SAME AS THAT FROM THE FIRST CYLINDER HEAD. THE SERVICE MANAGER INSPECTED THE VEHICLE AND CONCLUDED THAT OIL WAS LEAKING FROM THE CYLINDER HEAD AGAIN (59700 MILES).

NHTSA complaint #10071985 — an unverified report by a vehicle owner.

at 67,000 miles Bakersfield, CA

ENGINE AND ENGINE COOLING

I HAD TO FIX THE LEAK 3 TIMES. FINALLY, MY MECHANIC NOTICED THE CRACK ON THE INTAKE MANIFOLD. IT IS MADE OF HARD PLASTIC! WHAT IN THE WORLD ANYONE WOULD DESIGN SUCH PART IN PLASTIC? HOW CAN SUCH MATERIAL SUSTAIN EXTREME HEAT FOR LONG PERIODS OF TIME. I PURCHASED NEW ONE AND IT IS PLASTIC AGAIN WITH A LITTLE IMPROVEMENT. BUT IT IS MOSTLY PLASTIC AGAIN. I BELIEVE THIS IS SERVICE SCAM. YOU MAKE PARTS TO ONLY LAST 4 YEARS AND MAKE MONEY FROM SELLING AUTO PARTS. THE DEALERSHIP PERSON SOLD ME THE PARTS STATED THAT HE HAD SOLD 6 OF THEM LAST WEEK ALONE AND HE HAS IT IN STOCK ALL THE TIME. YOU KNOW THE PROBLEM BUT FAILED TO INFORM CONSUMERS. I WANT A SATISFACTORY ANSWER BEFORE BUYING ANOTHER AMERICAN CAR.

NHTSA complaint #10070748 — an unverified report by a vehicle owner.

at 71,000 miles Duncanville, TX

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

INTAKE MANIFOLD BLEW OUT, SENDING FUEL INTO THE ENGINE. THE INTAKE MANIFOLD WAS REPLACED.

NHTSA complaint #10055425 — an unverified report by a vehicle owner.

Other 1999 Mercury Grand Marquis problems

← Full 1999 Mercury Grand Marquis report