2004 Lexus LS Engine Problems

Sometimes, the car's RPM goes up to 4 and stays there as the car is unable to shift into the next gear. So, the car is not really accelerating at times when this happens. I have to pull over and turn off the car and start it again and sometimes it works correctly and at other times it doesn't. I've started to get check engine lights from time to time that point to solenoid issues. This makes driving this car very dangerous as this issue happens randomly. Thanks, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

2004 LEXUS LS430 VEHICLE STALLED AND WOULD NOT RESTART IMMEDIATELY ON THE ROAD PRESENTING DANGEROUS CONDITION. ENGINE WOULD CRANK BUT NOT RESTART. VEHICLE WOULD RESTART THE NEXT DAY. THIS HAPPENED TWICE BEFORE PUMP FAILED COMPLETELY. RESEARCH INDICATES THIS PROBLEM IDENTICAL TO THAT IDENTIFIED IN NHTSA CAMPAIGN ID O4V295000.BUILD DATES 2003-07-29 UNTIL 2004-01-23. LEXUS CAMPAIGN 4LB 2004 LS 430. THIS VEHICLE HAS 44,000 MILES ON IT AND HAS NO PREVIOUS ENGINE REPAIR HISTORY DEFECT SUMMARY: ON CERTAIN PASSENGER VEHICLES, THE IMPELLER INSIDE THE FUEL PUMP MAY HAVE BEEN IMPROPERLY MOLDED DUE TO A MANUFACTURING ERROR. ALCOHOL IN SOME FUELS MAY DEFORM THE IMPELLER AND CAUSE IT TO COME INTO CONTACT WITH THE PUMP HOUSING. CONSEQUENCE SUMMARY: THIS CONDITION COULD INCREASE THE ROTATIONAL RESISTANCE OF THE IMPELLER AND, IN THE WORST CASE, MAY RESULT IN FAILURE OF THE FUEL PUMP. OWNER REPLACED ORIGINAL FAILED FUEL PUMP WITH PUMP SUPPLIED BY LEXUS DEALER. SERVICE MANAGER AT WALCHER LEXUS IN WICHITA, KS INDICATES VEHICLE WAS MANUFACTURED IN FEBRUARY, 2004 OUTSIDE THE RANGE OF THE RECALL VEHICLES.LEXUS TECHNICAL SUPPORT WAS CONTACTED AND REFERRED ME BACK TO MY LOCAL SERVICE MANAGER. NO ONE SEEMS CONCERNED THAT DEFECTIVE CARS CONTINUED TO EXIST OUTSIDE OF THE RANGE OF VEHICLES IDENTIFIED IN THE ORIGINAL RECALL.

OUR 2004 LEXUS LS430 HAS STALLED (OR DIED) 4 TIMES (WHILE DRIVING) IN SIX MONTHS, TAKEN TO LEXUS DEALER 3 TIMES, WHERE THEY COULD NOT DIAGNOSE THE PROBLEM. STALLS OCCUR AFTER DRIVING 30 TO 40 MINUTES, COULD NOT RESTART IMMEDIATELY ALTHOUGH STARTER CRANKED WELL. VEHICLE HAS LESS THAN 35,000 MILES. COULD USUALLY RESTART AFTER 20 TO 30 MINUTES. ADEQUATE LEVEL OF FUEL. BATTERY WAS REPLACED AND FUEL PUMP SHUT-OFF RELAY WAS REPLACED, BUT IT DID NOT SOLVE THE PROBLEM. CONTACTED LEXUS CUSTOMER SERVICE IN CALIFORNIA, BUT THEY SINCE IT IS OUT OF WARRANTY THEY COULD NOT HELP. ACCORDING TO DEALER, FUEL PUMP RECALL HAS BEEN COMPLETED. WE ARE A RETIRED ELDERLY COUPLE AND ARE AFRAID TO DRIVE IT ON FREEWAYS OR CONGESTED STREETS FOR SAFETY REASONS. ALSO WE DO NOT WANT TO MAKE EXPENSIVE REPAIRS, PARTICULARLY IF WE ARE NOT SURE IT WILL SOLVE THE PROBLEM. ALSO WE ARE VERY MUCH INTERESTED IN ANY SIMILAR PROBLEMS THAT HAVE BEEN REPORTED AND THEIR SOLUTION. *TR

TL* THE CONTACT OWNS A 2004 LEXUS LS430. THE CONTACT STATED THAT THE VEHICLE FAILED TO START UNTIL AFTER NUMEROUS ATTEMPTS. THE FAILURE RECURRED SPORADICALLY. THE VEHICLE WAS TAKEN TO THE DEALER, BUT NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MLEAGE WAS UNKNOWN. UPDATED 09/08/16*LJ *CN

UNEXPLAINED RANDOM SURGES SPEED ON THE 2004 LEXUS LS 430.*MR THE CONSUMER NOTICED THAT THE VEHICLE RMPS' WERE HIGH WHEN THE VEHICLE WAS STARTED COLD (40 DEGREES) THEN ONCE THE VEHICLE WARM UP THE RPM'S DECREASED. WHEN STARTING THE VEHICLE DURING WARMER TEMPERATURE THE CONSUMER NOTICE THAT THE RPM'S SURGED FROM HIGH TO LOW. THE CONSUMER BROUGHT THIS TO THE ATTENTION OF THE DEALER AND MANUFACTURER. THE DEALER WAS UNABLE TO RECTIFY OR MODIFY THE PROBLEM AND THE MANUFACTURER INDICATED THAT THIS MAY BE A NORMAL CONDITION. *NM THE CONSUMER STATED ONE OF THE MOST TROUBLESOME ELEMENTS OF ELECTRONIC SYSTEMS IS WRING CONNECTORS. WIRING DEVICE FAILURES ARE OFTEN INTERMITTENT, POTENTIALLY MASKING THE PROBLEM UNTIL CIRCUMSTANCES CONTRIVE TO PRODUCE A DANGEROUS SITUATION. THE CONSUMER WAS GIVING HIS OPINION ABOUT THE TOYOTA ACCELERATION PROBLEM. UPDATED 02/23/10