2005 TOYOTA HIGHLANDER Engine And Engine Coolingengine Problems

2005 TOYOTA HIGHLANDER, CAR WILL ACCELERATE FROM A DEAD STOP ON ITS OWN. CHANGE TRANSMISSION FROM PARK TO DRIVE AND LET OFF BRAKE AND CAR WILL ACCELERATE WITHOUT TOUCHING GAS PEDAL FAST ENOUGH TO CHANGE GEARS AND CONTINUE. HAVE REACHED A SPEED OF 30 MPH BEFORE BRAKING. THE TACHOMETER DOES NOT SHOW THAT THE ENGINE IS REVVING HIGHER THAN A NORMAL IDLE WHEN IN PARK CHANGING INTO DRIVE SO IT SEEMS LIKE AN ELECTRONIC PROBLEM, ETC. ISSUE IS INTERMITTENT. THE CAR HAS BEEN TO 2 DEALERS OVER THE TIME IT HAS BEEN OWNED AND WE WERE TOLD THE ISSUE COULD NOT BE DUPLICATED SO NOTHING COULD BE DONE. I CALLED THE SAME DAY THIS EMAIL WAS SENT AND WAS TOLD THE SAME THING BY THE LOCAL TOYOTA DEALERSHIP. WELL, THE RECALLED GAS PEDALS DON'T STICK ALL THE TIME SO THEY ARE INTERMITTENT PROBLEMS SO WHERE IS THE DIFFERENCE BETWEEN THEIR...

ON NUMEROUS OCCASIONS THIS VEHICLE STUTTERS WHEN MERGING ON TO TRAFFIC. ON THIS SPECIFIC INSTANCE I WAS MERGING FROM TURN IN LANE. THE THROTTLE WAS SLOW TO RESPOND AFTER DEPRESSING THE ACCELERATOR PEDAL 3/4 OF THE WAY. THEN IT JUMPED/LURCHED FORWARD. I WAS NEARLY HIT BUT THE TRAFFIC COMING UP FROM BEHIND. THIS HAS OCCURRED ON MULTIPLE OCCASSIONS IN THE PAST, BEGINNING WITH 20000 MILES ON THE CAR. HAD BROUGHT IT TO THE DEALERS ATTENTION IN THE PAST AND WAS TOLD THAT THIS IS A "DESIGN FEATURE" OF THE ELECTRONIC THROTTLE. THEY SEEMED TO BE AWARE OF THE PROBLEM BUT COULD NOT OFFER ANY SOLUTION. THE ECM WAS REPROGRAMMED ONCE UNDER WARRANTY BUT THAT ALSO DID NOT SOLVE THE PROBLEM. *TR

CONSUMER 2005 HIGHLANDER HAS EXPERIENCED HESITATION DURING ACCELERATIONS AND SOMETIMES DECELERATION. *TS THE DEALER RECALIBRATED THE ECM WHICH IMPROVED THE HESITATION PROBLEM WHILE SHIFTING BUT ALSO REDUCED THE GAS MILEAGE. THE VEHICLE WAS TAKEN TO ANOTHER DEALER AND THEIR COMPUTER INDICATED THAT EVERYTHING WAS FINE. *NM

INTERMITTENT PROBLEM: WHILE TRAVELING APPROX 30 MPH (OR CRUISING SPEED), ATTEMPTED TO PASS ANOTHER VEHICLE. THE ACCELERATOR WAS PRESSED TO THE FLOOR AND THE VEHICLE REFUSED TO ACCELERATE FOR A PERIOD OF APPROXIMATELY 2 SECONDS. ACCELERATION RESUMED AFTER THIS PERIOD. CONTACTED TOYOTA. TOYOTA SAID THIS IS A NORMAL PHENOMENON IN THEIR DRIVE-BY-WIRE SYSTEMS.