2007 LEXUS IS 250 Engine And Engine Cooling Problems

AT APPROXIMATELY 40,000 MI. MY 2007 LEXUS IS 250 DEVELOPED A PROBLEM OF STALLING, SHAKING, MISFIRING AND THE VSC LIGHT, TRACTION SKID LIGHT AND CHECK ENGINE LIGHTS ALL COME ON. THE DEALERSHIP INITIALLY TRIED TO TELL ME THAT THE GAS CAP WAS NOT ON TIGHT (NOT TRUE) AND THEN THEY TRIED TO TELL ME THAT JUST TURNING THE LIGHTS OFF WOULD FIX THE PROBLEM (ALSO NOT TRUE). AFTER I INSISTED THAT THE PROBLEM WAS SERIOUS AND DANGEROUS, THE TECHNICIAN DROVE THE CAR HOME AND HAD THE SAME PROBLEM THAT I HAD BEEN EXPERIENCING. FINALLY, THE DEALERSHIP DECIDED THAT CARBON HAD BUILT UP ON THE VALVES AND THAT WAS CAUSING THE ENGINE TO MISFIRE AND ALL THE LIGHTS TO COME ON. THE DEALERSHIP SENT THE VALVES TO A SHOP AND HAD THEM CLEANED AND GROUND DOWN. THE SERVICE MANAGER TOLD ME THAT THERE WAS A DESIGN FLAW AND THIS IS WHAT...

COMPARTMENT OF WHERE THE CABIN AIR FILTER IS FOR THE 2007 LEXUS IS 250, A BOLT IS RUSTING AND THE DEALERSHIP ACKNOWLEDGES THE FACT BUT FAILS TO FIX THE ISSUE. THEY CLAIM THAT THIS IS COMMON FOR THE BOLT TO RUST. *TR

ON 3/5/11 AT APPROXIMATELY 8:30 AM, I WAS IN A PARKING LOT TRAVELING AT ABOUT 5 MPH IN DRIVE WITH MY RIGHT FOOT LIGHTLY APPLYING THE BRAKE WHEN THE BRAKES SEEMED NOT TO HOLD AS THEY SHOULD AND THE ENGINE SUDDENLY INCREASED TO 4500 - 5500 RPM. I APPLIED INCREASED FORCE TO THE BRAKE PEDAL, PLACED THE GEAR SHIFT INTO PARK, AND NOTED THE RPMS CLIMBING ABOVE 5500. I THEN PRESSED THE START/STOP BUTTON AND THE ENGINE STOPPED. THIS EPISODE OCCURRED ON DRY, SMOOTH ASPHALT ON A CLEAR, COLD (30 DEGREE) DAY. THE ENGINE WAS AT NORMAL OPERATING TEMPERATURE, INITIALLY RUNNING AT NEAR IDLE (IN THE PARKING LOT), WITH THE GEAR SHIFT IN DRIVE, CRUISE CONTROL OFF, RADIO, CD, A/C, DEFROSTER WERE ALL OFF. HEAT AND FAN WERE ON WITH INTERIOR TEMP SET AT 74 DEGREES. THIS EPISODE HAS NOT REPEATED AS OF THE FILING OF THIS REPORT (4 DAYS...

ON 02/06/09 THE CAR ENGINE MALFUNCTION LIGHT TURNED ON AS WELL AS THE OTHER ONE'S ON THE DASH. THE CAR REDUCED THE VELOCITY WHILE DRIVING ON THE HIGHWAY AND DID NOT ACCELERATE ANY FASTER THE 40 MPH. I TOOK THE CAR TO THE LEXUS DEALERSHIP SERVICE DEPARTMENT. THEY STATED IT WAS A MISFIRE IN SOME CYLINDER AND ALSO SOME PROBLEM WITH THE GASOLINE. THEY FIXED IT. ON MAY 4, 2009 I HAD THE SAME PROBLEM WITH THE CAR. THE CAR MALFUNCTIONING LIGHTS TURNED ON AND THE CAR LOSES VELOCITY WHILE DRIVING ON THE HIGHWAY. SO FAR THE CAR HAS BEEN AT THE LEXUS SERVICE DEPARTMENT WAITING TO BE REPAIRED. LEXUS STATED IT IS THE VEHICLE MOTOR PIPES THAT NEED BE CHANGED AND THEY HAVE NOT ARRIVED AT THE DEALERSHIP UP UNTIL TODAY MAY 26, 2009. THEY HAVE TOLD ME THE VEHICLE MOTOR PIPES ARE ON BACK ORDERED UNTIL JUNE 2009....