2006 Mercury Grand Marquis acceleration problems

VEHICLE SPEED CONTROL

THE VEHICLE ACCELERATED ON IT'S OWN WHILE STOPPED WITH THE BRAKE DEPRESSED. ONCE IN A PARKING LOT WAITING FOR A SPOT TO CLEAR.THE SECOND TIME WHILE SITTING AT A RED LIGHT. I HELD THE BRAKE DOWN AS HARD AS I COULD WHILE THE CAR DID A BURN OUT AND I NOTICED THE TRACTION LIGHT COME ON. IT THEN JUST WENT BACK TO NORMAL. THIS IS VERY DANGEROUS. SOMEONE IN FRONT OF THE CAR (ANOTHER DRIVER OR PEDESTRIAN) CAN SERIOUSLY GET HURT OR KILLED.

NHTSA complaint #11316773 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

THE VEHICLE ACCELERATION BY IT SELF AND COULD NOT STOP IT. PROPELLED THRU THE. BRAKES AND WOULD NOT STOP. WE ARE TAKING CAR TO FORD DEALER. THE CAR ENGINE WAS STOPPED AND RESTARTED RUN OK. NOT SURE IF A RECALL ABOUT THIS YR. WITH THIS PROBLEM?

NHTSA complaint #11124153 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL* THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. WHILE DRIVING 45 MPH, THE VEHICLE ACCELERATED INDEPENDENTLY. THE CONTACT DEPRESSED THE BRAKE PEDAL, BUT THE VEHICLE DID NOT STOP. THE CONTACT WAS ABLE TO PLACE THE VEHICLE IN NEUTRAL AND DEPRESS THE BRAKE PEDAL IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED OR REPAIRED. THE FAILURE WAS INTERMITTENT. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 170,000.

NHTSA complaint #11044890 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

CRUISE CONTROL WILL NOT WORK NOR POWER ON. CIGARETTE LIGHTER OUTLET HAS NO POWER.

NHTSA complaint #10897075 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL* THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE ACCELERATED INDEPENDENTLY WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC BUT THE FAILURE WAS UNABLE TO BE DETERMINED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.

NHTSA complaint #10823388 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL* THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE DRIVING AT 10 MPH ATTEMPTING TO ENGAGE THE BRAKES, THE VEHICLE SUDDENLY ACCELERATED WITHOUT WARNING. THE FAILURE RECURRED THREE TIMES. THE VEHICLE WAS TAKEN TO A DEALER BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 58,300.

NHTSA complaint #10758873 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

DRIVING AT 50 MPH. PASSED SLOWER-MOVING VEHICLE BY PUSHING ACCELERATOR TO FLOOR(FULL POWER) DURING INITIAL PASS, THEN RELEASED ACCELERATOR. ENGINE RPM'S DID NOT REDUCE, BUT INSTEAD CLIMBED RAPIDLY WITH THE THROTTLE STUCK AT THE "FULL POWER" POSITION. THE VEHICLE CONTINUED TO ACCELERATE RAPIDLY, REACHING A SPEED OF ABOUT 75 MPH IN 50 MPH ZONE ON TWO LANE ROAD. UPON RECOGNIZING THE ACCELERATOR WAS STUCK IN "WIDE OPEN" POSITION, I SLAMMED MY FOOT AGAINST THE ACCELERATOR PEDAL REPEATEDLY, AND AFTER ABOUT THREE STRIKES THE ENGINE RPM REDUCED TO NORMAL (CONSISTENT WITH ACCELERATOR PEDAL POSITION) AND I WAS ABLE TO REGAIN CONTROL OF THE SPEED AND SLOW THE VEHICLE. I CHECKED TO ENSURE THAT NEITHER THE FLOOR MAT NOR ANY FOREIGN OBJECTS WERE IMPINGING ON ACCELERATOR PEDAL. I FOUND NO OBJECTS INTERFERING WITH THE ACCELERATOR PEDAL. THIS SAME PROBLEM OCCURRED TWO MORE TIMES WITHIN TWO WEEKS. I REPORTED THE EVENTS TO MY LOCAL MECHANIC AND HE RAN A COMPUTER DIAGNOSTIC ON THE SYSTEM. IT SHOWED NO ABNORMALITIES OR CODES. TWO MECHANICS EXAMINED THE SYSTEM UNDER THE HOOD AND NOTED NO ABNORMALITIES. THEY INDICATED THEY "CLEANED" SOMETHING (CONTACTS?). I SUBSEQUENTLY TOOK THE VEHICLE ONTO A LARGER ROAD WITHOUT TRAFFIC PRESENT AND ATTEMPTED TO DUPLICATE THE PROBLEM. WHEN I PRESSED THE ACCELERATOR TO THE FLOOR (FULL THROTTLE), THE SAME PROBLEM OCCURRED. THE ENGINE RPM CONTINUED TO CLIMB RAPIDLY AND THE VEHICLE ACCELERATED UNCONTROLLABLY AND RAPIDLY. TAKING MY FOOT OFF THE ACCELERATOR RESULTED IN ABSOLUTELY NO REDUCTION TO ENGINE POWER. ENGINE RPM AND SPEED RAPIDLY INCREASED AS THE ENGINE WAS STUCK IN THE "FULL POWER" POSITION. I WAS ONLY ABLE TO REGAIN CONTROL OF THE ENGINE SPEED AND VEHICLE SPEED BY REPEATEDLY SLAMMING MY FOOT AGAINST THE ACCELERATOR PEDAL. AFTER TWO OR THREE HITS, ENGINE POWER REDUCED CONSISTENT WITH ACCELERATOR POSITION.

NHTSA complaint #10648595 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL* THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. WHILE APPROACHING A TRAFFIC LIGHT, THE VEHICLE ACCELERATED WHEN THE BRAKE PEDAL WAS DEPRESSED. THE CONTACT HAD TO APPLY THE BRAKE PEDAL AND SHIFT INTO NEUTRAL IN ORDER TO STOP THE VEHICLE. AN INDEPENDENT MECHANIC WAS UNABLE TO DIAGNOSE THE FAILURE, BUT REPLACED THE THROTTLE POSITION SENSOR AND THROTTLE BODY. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS UNAVAILABLE. UPDATED 12/03/14

NHTSA complaint #10639842 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

UPON READYING FOR STOP THE VEHICLE SURGED FORWARD. I HAD TO PUT IN NEUTRAL AND WAIT UNTIL THE SURGE DISCONTINUED. THIS HAS BEEN GOING ON FOR SEVERAL MONTHS. IT HAS BECOME A INCIDENT THAT HAPPENS MORE OFTEN. IT IS VERY SCARY. A HAD JUMP HAPPENS WHEN I PUT IT BACK IN GEAR.

NHTSA complaint #10637999 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

ON 6/1/14 I WAS DRIVING SOUTH ON SR44 IN OHIO NEAR LAKE PUNDERSON AND FOLLOWING A FARMER DRIVING A FARM TRACTOR.WHEN I GOT A CHANCE TO PASS HIM I ACCELERATED TO KICK IN THE PASSING GEAR AND WHEN I CLEARED HIM AND LEFT OFF THE THROTTLE IT DID NOT RESPOND INSTEAD IT CONTINUED AT A HIGH SPEED FOR A FEW SECONDS BEFORE LETTING OFF.I THOUGHT MAYBE THE THROTTLE GOT CAUGHT ON MY CAR MAT. I VERY RARELY PUSH THE THROTTLE TO THE FLOOR. THEN YESTERDAY 8/20/14 I WAS WITH MY FAMILY TRAVELING NORTH ON I-77 IN AKRON OHIO AND AGAIN I KICKED THE CAR INTO PASSING GEAR TO PASS AND THIS TIME IT ACCELERATED AND DID NOT RETRACT ON MY LETTING OFF. I SLID THE SHIFTER INTO NEUTRAL AND PLACED MY FOOT UNDER THE PEDAL AND LIFTED UP AND IT CAME UP BUT I THOUGHT I FELT SOME RESISTANCE WITH THE PEDDLE.I CONTINUED ON TO MY DESTINATION ONLY A FEW MILES TO COPLEY OHIO.I PARKED THE CAR TURNING OFF THE ENGINE AND SLID THE SEAT BACK AND ON MY KNEES IN THE DRIVEWAY I REACHED IN WITH MY RIGHT HAND AND PUSHED THE PEDDLE ALL THE WAY IN AND LET GO OF IT AND TO MY SURPRISE IT REMAINED IN THE FULL THROTTLE POSITION. I THEN PULLED THE THROTTLE BACK AND FELT RESISTANCE. I PUSHED IT BACK IN AGAIN AND IT STUCK BUT CAME BACK WITH LESS RESISTANCE SO I PUMPED IT BACK AND FORTH AND GOT RID OF THE STICKING PROBLEM.I THEN THOUGHT IT MAY OF DEVELOPED SOME LIGHT RUST ON THE LINKAGE SO I LOOKED UP UNDER THE DASH AND THERE IS NO PLACE TO LUBRICATE THAT'S WHEN I REALIZED I REALLY HAD A PROBLEM AND POSSIBLY A LOT OF PEOPLE OWNING A SIMILAR CAR.AS OF THIS WRITING I WENT OUT TO THE CAR IN THE GARAGE AND REACHED IN AND PUSHED THE THROTTLE TO THE FLOOR AND IT CAME BACK NICELY.A LOT OF PEOPLE WILL NOT REACT AS I DID AND SHIFT INTO NEUTRAL.

NHTSA complaint #10627356 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

ON SEVERAL OCCASIONS SINCE I'VE OWNED THIS VEHICLE (I AM ORIGINAL OWNER) WHEN I STEP ON THE BRAKES HARD THE ENGINE ACCELERATES. RECENTLY IT HAS GOTTEN WORSE AND I KNOW I'M NOT TOUCHING THE ACCELERATOR. TODAY IT WAS SO BAD THE I WAS STANDING ON THE BRAKES WITH BOTH FEET AND BURNING RUBBER. I SHIFTED TO PARK AND THE ENGINE WENT ONTO MAX ACCELERATION. I SHUT OF THE ENGINE AND RESTATED AND FOUND IT WAS STILL AT MAX ACCELERATION. I SHUT IT OFF AGAIN AND WAITED 30 SECONDS. WHEN I THEN RESTARTED IT RAN NORMALLY. FORTUNATELY I WAS AT A STOP SIGN OR I THINK THERE WOULD HAVE BEEN A COLLISION IF IN TRAFFIC.

NHTSA complaint #10552931 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

OVER THE COURSE OF SEVERAL MONTHS THE ENGINE SEEMED TO REV UP WHILE THE BRAKES WERE APPLIED FOR A STOP. ON JULY 29,2013 I TOOK THE CAR TO A RELIABLE SERVICE CENTER AND ASKED FOR AN ANALYSIS OF WHAT THE CAUSE COULD BE. ANALYSIS RESULT INDICATED THAT THE THROTTLE BODY ASSEMBLY WAS THE PROBLEM. A NEW ASSEMBLY WAS INSTALLED, AND I WAS INFORMED THAT FORD HAS A BULLETIN ON THAT PARTICULAR PART ON 2006 GRAND MARQUIS. THE MECHANIC FELT THAT A RECALL SHOULD BE ISSUED FOR SAFETY REASONS.

NHTSA complaint #10534103 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

I WAS DRIVING UP TO A LIGHT AND SLOWING DOWN. WHEN AT 25MPH THE CAR SUDDENLY ACCELERATED AND I HAD TO PUT ALL MY WEIGHT ON THE BRAKE TO STOP. AFTER ABOUT 10 SECONDS THE CAR WENT BACK TO NORMAL AND RAN FINE. SINCE THAT INCIDENT MY CAR HAS DONE THAT TWICE WITH THE SAME RESULT AND I AM WORRIED SOMEONE WILL GET HURT. I HAVE BEEN RESEARCHING THIS ONLINE AND HAVE FOUND OTHER COMPLAINTS. I WILL BE TAKING THE CAR TO MY MECHANIC ASAP.

NHTSA complaint #10532071 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL* THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE STOPPED AT A STOP LIGHT, THERE WAS AN INCREASE IN THE ENGINE RPMS. THE CONTATC HAD TO APPLY HEAVY PRESSURE TO THE ACCELERATOR PEDAL TO KEEP THE VEHICLE STOPPED. THE FAILURE OCCURRED INTERMITTENTLY AND THE VEHICLE ALSO EXPERIENCE UNINTENDED ACCELERATION. THE VEHICLE WAS TAKEN TO THE DEALER, WHO INSPECTED IT AND STATED THAT THERE WAS NO FAILURE. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 2,000 AND THE CURRENT MILEAGE WAS 111,000. THE VIN WAS UNKNOWN.

NHTSA complaint #10451663 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL*THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. THE CONTACT STATED THE VEHICLE SURGED FORWARD ON THREE SEPARATE OCCASIONS WHILE THE BRAKES WERE ENGAGED. DURING TWO OF THE FAILURES THE CONTACT APPLIED EXCESSIVE PRESSURE TO THE BRAKE PEDAL TO STOP THE VEHICLE. ON ONE OCCASION THE VEHICLE STOPPED ACCELERATING ON ITS OWN.THE VEHICLE WAS TAKEN TO A REPAIR SHOP BUT THE MECHANIC WAS UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND THE CONTACT WAS ADVISED TO TAKE THE VEHICLE TO AN AUTHORIZED DEALER. THE FAILURE MILEAGE WAS 28,000 AND THE CURRENT MILEAGE WAS 32,800.

NHTSA complaint #10399633 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

I AM CERTIFIED SAFETY PROFESSIONAL WITH OVER 30 YEARS EXPERIENCE WORKING IN THE OCCUPATIONAL SAFETY FIELD. TWICE WITHIN THE LAST WEEK, MY VEHICLE ACCELERATED TO 5000 RPM WHILE PRESSING THE BRAKE PEDAL TO STOP AT AN INTERSECTION. MY FOOT WAS ON THE BRAKE PEDAL AND NOT ON THE GAS PEDAL. I HAD TO QUICKLY SHIFT INTO NEUTRAL TO AVOID ENTERING THE INTERSECTION INTO CROSSING TRAFFIC. BRAKES WOULD NOT HOLD. A FEW SECONDS AFTER SHIFTING INTO NEUTRAL THE ENGINE DECELERATED BACK TO NORMAL ON ITS OWN. CARPET WAS NOT THE ISSUE. THIS IS A SERIOUS MALFUNCTION THAT COULD HAVE KILLED ME OR SOMEONE ELSE.

NHTSA complaint #10393918 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

CAR ACCELERATION ON ITS OWN, ESTIMATED START END OF DEC.2009. ESTIMATES THAT IT HAPPENS ONCE A MONTH, NO CLUE AS TO WHEN IT WILL HAPPEN. GOING TO SLOW DOWN / PARK, CAR STARTS TO ACCELERATE ON ITS' OWN., HAVE TO PRESS HARD ON BRAKE AND USE 2 FEET.. BROUGHT CAR INTO DEALER 4 TIMES BETWEEN JAN THRU JUNE , AT THIS POINT. DEALER SAYS CAN'T FIND ANYTHING.

NHTSA complaint #10341654 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL*THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHEN UTILIZING THE CRUISE CONTROL AT 60 MPH AND HIGHER, THE VEHICLE WOULD ABNORMALLY ACCELERATE WITHOUT WARRANT. HE WAS ABLE TO DEACTIVATE THE CRUISE CONTROL BY DEPRESSING THE BRAKE PEDAL BUT THE ENGINE CONTINUED TO IDLE VIOLENTLY AND THE VEHICLE CONTINUED TO ACCELERATE. THE CONTACT WAS UNABLE TO DEACTIVATE THE CRUISE CONTROL USING THE DEACTIVATION SWITCH ON THE STEERING WHEEL. THE DEALER COULD NOT DUPLICATE THE FAILURE. HE STATED THAT THE VEHICLE WAS SAFE TO DRIVE AND THE FAILURE WAS CONTRIBUTED TO EITHER THE FLOOR MATS OR DRIVER ERROR WHERE THE CONTACT WAS MISTAKENLY HITTING THE CRUISE CONTROL RESUME BUTTON. THERE WERE NO REPAIRS MADE TO THE VEHICLE. THE FAILURE MILEAGE WAS 26,000 AND THE CURRENT MILEAGE WAS 33,000. UPDATED 6/3/10 *CN THE CONSUMER STATED TAPPING THE BRAKE DIDN'T ALWAYS RELEASE THE CRUISE CONTROL. UPDATED 06/17/10

NHTSA complaint #10322777 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

SPORADICALLY AND WITHOUT WARNING, MY CRUISE CONTROL WILL ACTIVATE CAUSING THE VEHICLE TO IMMEDIATELY ACCELERATE. I HAD BEEN USING THE CONTROL BUT HAD DE-ACTIVATED IT BUT DEPRESSING THE BRAKE WHICH LEAVES THE UNIT "ON" BUT NOT ACTIVATED.

NHTSA complaint #10314250 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL*THE CONTACT OWNS A 2006 MERCURY GRAND MARQUIS. WHEN APPLYING PRESSURE TO THE BRAKE PEDAL AND PLACING THE VEHICLE INTO REVERSE, THE GEAR LURCHES FORWARD UNEXPECTEDLY. THE CONTACT HAS TO SWITCH THE VEHICLE INTO NEUTRAL TO STOP THE UNINTENDED ACCELERATION. HE TOOK THE VEHICLE TO THE DEALER, BUT THEY COULD NOT IDENTIFY THE CAUSE OF THE FAILURE. THE FAILURE MILEAGE WAS 27,000 AND CURRENT MILEAGE WAS 29,000. UPDATED 07/17/09 *BF THE CONSUMER STATED ON 2 OCCASIONS, HE STARTED THE VEHICLE; PUT IT IN DRIVE AND THE MOTOR RACED AND THE VEHICLE LURCHES FORWARD. HE HAD TO PUT THE VEHICLE INTO NEUTRAL AND TURN OFF THE IGNITION TO STOP THE VEHICLE. THE DEALER WAS UNABLE TO DUPLICATE THE CONSUMERS CONCERN. UPDATED 07/17/09.

NHTSA complaint #10273976 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

WAS GETTING ON HIGHWAY, ACCELERATED MORE THAN NORMAL TO PASS A VERY SLOW VEHICLE ENTERING HIGHWAY FROM 5 MPH ON HIGHWAY (ESTIMATE 80 TO 90% OF FULL THROTTLE), WHEN I WAS SAFE OF SLOW VEHICLE AND LET OFF THE PEDAL, VEHICLE CONTINUED TO ACCELERATE TO ABOUT 83 MPH AS I RECALL, I CONTINUED TO PRESS BRAKE, STILL ACCELERATING, PRESSED STEERING CONTROL BUTTONS TO MAKE SURE CRUISE CONTROL WAS OFF (DID NOT HAVE IT ON PREVIOUS TO THIS), PRESSED BRAKES AGAIN AND AGAIN, FINALLY VEHICLE SLOWED DOWN JUST BEFORE I WAS GOING TO TURN OF THE IGNITION. DID NOT HAVE THE CAR CHECKED OUT, DID NOT SMELL OR SEE ANYTHING IRREGULAR, VEHICLE INCREASE IN THE CONTINUED SPEED WAS FELT WITH SOME G-FORCE BEFORE IT WENT BACK TO NORMAL OPERATION. APPEARS THAT IT JUST WENT FULL THROTTLE ON ITS OWN I COULD FEEL IT REALLY MOVING. HAS ONLY OCCURRED ONCE, I ALSO EMAILED FORD REGARDING THIS ISSUE. LUCKILY IT WAS 5 A.M. IN THE MORNING NO HARM DONE, JUST FRIGHTENED. BOUGHT CAR USED @ 45 K INCIDENT OCCURRED AROUND 47,393 MILES.

NHTSA complaint #10268976 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

2006 MERCURY GRAND MARQUIS SEDAN THAT SURGE FORWARD WHILE IN GEAR**CC THE CONSUMER STATED IMMEDIATELY UPON TAKING DELIVERY OF THE CAR THE VEHICLE WOULD OCCASIONALLY LUNGE FORWARD. THE CONSUMER STATED NOTIFIED THE DEALER OF THIS DEFECT AND THE DEALER STATED THAT THERE WAS NO PROBLEM WITH THE VEHICLE. THE CONSUMER STATED ONE INCIDENT IS WHEN A PEDESTRIAN WAS CROSSING THE STREET IN FRONT OF THE CAR THE CONSUMER HAD TO JAM ON THE BRAKES TO AVOID HITTING THE PEDESTRIAN. THE CONSUMER STATED THEY FEEL THIS IS A BIG SAFETY HAZARD AND WOULD LIKE THE PROBLEM ASSESSED.

NHTSA complaint #10196997 — an unverified report by a vehicle owner.