2008 Lincoln MKX Speed Control & Cruise Problems

TL* THE CONTACT OWNS A 2008 LINCOLN MKX. WHILE DRIVING VARIOUS SPEEDS, ON AN INCLINE OR DECLINE, THE VEHICLE DID NOT RESPOND WHEN THE ACCELERATOR PEDAL WAS DEPRESSED. THE CONTACT ALSO STATED THAT THE VEHICLE JERKED AND WOULD NOT ACCELERATE FORWARD IN STOP AND GO TRAFFIC. FURTHERMORE, THE CHECK ENGINE INDICATOR ILLUMINATED BRIEFLY AND THE RPMS RAPIDLY INCREASED. ROB SIGHT FORD IN KANSAS CITY, MISSOURI WAS NOTIFIED AND STATED THAT THERE WAS NO RECALL FOR THE FAILURE. IN ADDITION, THE DEALER OFFERED TO PROVIDE DIAGNOSTIC TESTING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROVIDED THE CONTACT WITH CASE NUMBER: CAS-14516361. THE FAILURE MILEAGE WAS 142,000.

VEHICLE (08 LINCOLN MKX) WAS CRUISING AT 35MPH GOING DOWN SLIGHT INCLINE WHEN SUDDENLY VEHICLE STARTED ACCELERATING ON ITS OWN AT ~3,500RPM. AS THE VEHICLE WAS GOING DOWN HILL AT 35MPH IN A 30MPH ZONE WITH NO OTHER VEHICLES IN SIGHT, NEITHER GAS NOR BRAKES WERE APPLIED AS THERE WAS NO NEED. FOOT WAS OFF BOTH PEDALS UNTIL I REALIZED THAT THE CAR WAS ACCELERATING ON ITS OWN AT AN UNCONTROLLABLE RATE AND IT WAS THEN THAT I APPLIED THE BRAKES. CAR CONTINUED TO ACCELERATE AS THE BRAKES WERE BEING APPLIED. ACCELERATION LASTED APPROXIMATELY TEN SECONDS AND THEN VEHICLE REVERTED BACK TO NORMAL. BROUGHT THE VEHICLE IN FOR SERVICE THE FOLLOWING DAY (13MAY2014) AND WAS TOLD THAT THERE ARE CURRENTLY NO SERVICE BULLETINS OR KNOWN SAFETY ISSUES WITH THIS MAKE AND MODEL. *TR

THE VEHICLE SURGES AT LOWER RPMS BETWEEN 1,000 AND 2,000. DEALERSHIP TESTED THE PROBLEM AND FOUND A DEFECTIVE THROTTLE POSITION SENSOR. UPON REVIEW A NEW THROTTLE BODY ASSEMBLY ALSO NEEDED TO BE REPLACED. THE DEALERSHIP THEN RE-PROGRAMMED THE PCM TO CURRENT CALIBRATION AND ROAD TESTED THE VEHICLE. APPROXIMATELY TWO YEARS LATER THE SAME PROBLEM HAS REOCCURRED. THE CAR SURGES AT VARIOUS SPEEDS AND LOSES POWER. IT IS EXTREMELY DANGEROUS. WE HAVE BROUGHT THE VEHICLE TO DIFFERENT MECHANICS WHO HAVE DIAGNOSED THE VEHICLE WITH AGAIN HAVING A DEFECTIVE THROTTLE SENSOR AND THROTTLE BODY. WE HAD THE THROTTLE BODY REPLACED BUT ARE STILL EXPERIENCING THE PROBLEM. THE CHECK ENGINE LIGHT AND MAINTENANCE LIGHT COME ON WHEN THE CAR LOSES ACCELERATION POWER, BUT ONCE WE RESTART THE CAR THE LIGHTS GO OFF. AGAIN, THIS IS EXTREMELY DANGEROUS AS IT HAS OCCURRED AT SPEEDS BETWEEN 45-55 MPH. WE ARE SEEKING TO HAVE THIS VEHICLE RECALLED AS WE HAVE SEEN MANY OTHER CUSTOMER COMPLAINTS WITH THE SAME PROBLEM, OR RECEIVING A DEALERSHIP CREDIT TO HAVE THE WORK DONE AGAIN.

KICKED ON CRUISE CONTROL AT SEVENTY. RPM'S SHOT FROM 2 THOUSAND TO EIGHT THOUSAND AND CAR ACCELERATED TO EIGHTY MILES AN HOUR. ALL WE DOING WAS HOLDING THE STEERING WHEEL. WE HAVE TAKEN IT BACK TO THE DEALER TWICE SINCE WE PURCHASED TWO MONTHS AGO AND THEY HAVE INFORMED US BOTH TIMES THAT THEY CAN FIND NOTHING WRONG WITH THE VEHICLE... *TR

TL* THE CONTACT OWNS A 2008 LINCOLN MKS. THE CONTACT STATED THAT THE WRENCH WARNING INDICATOR ILLUMINATED AND THE VEHICLE LOST POWER. THE CONTACT STATED THE VEHICLE HAD TO BE TURNED OFF AND RESTARTED. ONCE THE VEHICLE WAS RESTARTED, THERE WAS A HARD THUMP HEARD FROM THE VEHICLE. IN ADDITION, THE SPEEDOMETER WOULD FAIL WHEN THE FAILURE OCCURRED. THE CONTACT STATED THAT THE FAILURE RECURRED THREE TIMES. THE VEHICLE WAS TAKEN TO THE DEALER EACH TIME, BUT THE DEALER STATED THAT THE VEHICLE WAS RUNNING AS DESIGNED. THE FAILURE MILEAGE WAS 12,000 AND THE CURRENT MILEAGE WAS 48,000.