2018 LEXUS RX350 Power Train Problems

WHEN STEPPING ON THE GAS PETAL ONE OF THREE THINGS HAPPEN. 1. NORMAL ACCELERATION WHICH YOU EXPECT AFTER 60 YEARS OF DRIVING AND WHICH WE OBTAIN FROM A 2014 LEXUS RX350 THAT WE OWN. 2. HESITATION OF BETWEEN 1 AND 5 SECONDS BEFORE ACCELERATION BEGINS. 3 EXCESSIVE ACCELERATION ( SURG OF ACCELERATION MUCH MORE THAN EXPECTED). THIS EXCESS ACCELERATION MAY HAPPEN AFTER THE HESITATION OR THERE COULD BE "NORMAL" ACCELERATION AFTER THE HESITATION AND HAPPENS WHEN ACCELERATING AFTER BEING STOPPED.. THE HESITATION AND EXCESS ACCELERATION CAN BE FROM A STOPPED POSITION IE STOP SIGN OR TRAFFIC LIGHT OR WHILE MOVING AND NORMAL SPEEDS. THERE SEEMS TO BE A CONSISTENT HESITATION AT THE 60 TO 65 MPH WHEN ATTEMPTING TO ACCELERATE ON HIGHWAY. AT 70 MPH EVERYTHING SEEMS TO WORK AS EXPECTED. THE SURGING AND HESITATING SEEMS TO BE AT LOWER SPEEDS AND AND WHEN MAKING TURNS IN CITY STREETS AND...

I TRIED ACCELERATING ON THE HIGHWAY (PCH IN SANTA MONICA, CA) WHILE TRAVELING FORWARD AT ABOUT 45-50 MPH, BUT THE VEHICLE HESITATED. THIS IS THE FORTH TIME THERE HAS BEEN A HESITATION IN ACCELERATION SINCE OWNING THE CAR, BUT THIS TIME THERE WAS A MESSAGE ON MY DASH. THE MESSAGE STATED THAT THERE WAS "AN OBSTRUCTION WITH THE PEDAL AND ACCELERATION WAS RETARDED." I LATER LOOKED DOWN AT THE PEDALS FELT AROUND THE THEM, BUT FOUND NOTHING OBSTRUCTING. AT THE TIME, THE VEHICLE HAD LESS THAN A QUARTER TANK OF GAS BUT NOT LOW ENOUGH FOR THE LOW FUEL WARNING TO COME ON. AFTER DRIVING ABOUT 15 MORE MILES - THE LOW FUEL WARNING CAME ON. I HAVE ALWAYS PUT PREMIUM FUEL IN THE VEHICLE AND MY WIFE DOESN'T PUT GAS IN THE VEHICLE. A RECALL WAS RECENTLY PERFORMED PERTAINING TO THE FUEL PUMP AT THE DEALER - PERTAINING TO...

1.CONSTANT JERKING SENSATION OCCURS BEFORE VEHICLE SHIFTS INTO LOWER GEARS WHILE AT RELATIVELY LOW SPEEDS AND THROTTLE SETTINGS (25-45 MPH, STOP AND GO CITY DRIVING, MAINTAINING SPEED). 2.WHEN MINIMAL INCREASE IN POWER IS NEEDED OR A MILD GRADE IS ENCOUNTERED, ADDITIONAL THROTTLE PRESSURE SEEMS ONLY TO RESULT IN LOSS OF POWER UNTIL THE TRANSMISSIONS SHIFTS INTO SOME LOWER GEAR. THE VEHICLE THEN ACCELERATES TOO RAPIDLY, FOLLOWED BY THE NEED TO REDUCE THROTTLE PRESSURE ' OR APPLY BRAKES - WHICH IN TURN CAUSES THE TRANSMISSION TO SHIFT BACK TO A HIGHER GEAR. THE SEQUENCE THEN REPEATS ITSELF. 3.NOTE: POOR DRIVABILITY ISSUES ARE REDUCED WHEN THE ENGINE IS COLD. ALSO KEEPING RPM ABOVE 2000 HELPS. 4.DEPENDING ON DRIVING CONDITIONS, THE VEHICLE WILL ACCELERATE WELL WHILE SHIFTING UP THROUGH THE GEARS BUT SEEMS TO LOOSE POWER AS RPM DROPS, FORCING A DOWNSHIFT OR INCREASED THROTTLE POSITION. 5.WHEN UNDER SLIGHT ENGINE LOAD, THE SUSPENSION...

HESITATION UPON ACCELERATION. THE ENGINE DOES NOT RESPOND IN A LINEAR MANNER WHEN PRESSING THE GAS PEDAL.