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1738588 overheating

52 Complaints

2003 TOYOTA 4RUNNER FUEL/PROPULSION SYSTEM

overheating includes words ANTI-FREEZE, ANTIFEEZE, ANTIFREESE, ANTIFREEZ, ANTIFREEZE, COOLANT, COOLLANT, CYLINDER-HEAD, CYLINDERHEAD, FIRE, HEAD, HEADGASKET, HEAT?, HEATE, HEATED, HEATI, HEATIN, HEATS, HEATUP, HOT, LEAKAGES, MIXED, MIXING, OVEHEAT, OVERH, OVERHE, OVERHEAT, OVERHEATD, OVERHEATE, OVERHEATED, OVERHEATEING, OVERHEATES, OVERHEATIN, OVERHEATING, OVERHEATINGS, OVERHEATRING, OVERHEATS, OVERHEATS-, RADIATOR

4 Runner includes models 4 RUNNER, 4RUNNER

fuel includes systems FUEL SYSTEM, DIESEL, FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY, FUEL SYSTEM, GASOLINE, FUEL SYSTEM, GASOLINE:CARBURETOR SYSTEM, FUEL SYSTEM, GASOLINE:DELIVERY, FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP, FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS, FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM, FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL, FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS, FUEL SYSTEM, GASOLINE:STORAGE, FUEL SYSTEM, GASOLINE:STORAGE:AUXILLARY TANK, FUEL SYSTEM, GASOLINE:STORAGE:AUXILLARY TANK:SELECTOR DEVICES, FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY, FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP, FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:MOUNTING, FUEL SYSTEM, OTHER, FUEL SYSTEM, OTHER:DELIVERY, FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP, FUEL SYSTEM, OTHER:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS, FUEL SYSTEM, OTHER:FUEL INJECTION SYSTEM, FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM, FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY, FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:FILLING/CHARGING, FUEL/PROPULSION SYSTEM

Includes model years 2002 to 2004

10823454 2010-08-05
2003 TOYOTA 4RUNNER
MY 2003 TOYOTA HAD EMISSIONS ISSUES IN THAT ALL FOUR OXYGEN SENSORS WOULD FAIL QUICKLY. IT TOOK ME TWO YEARS AND LOTS OF MONEY LATER TO DETERMINE THAT THE CAUSE OF THIS IS BECAUSE TRANSMISSION FLUID IS WICKING ITS WAY THROUGH THE TRANSMISSION SOLENOID HARNESS ALL THE WAY TO THE ECU AND ONCE THERE BECAUSE OF THE WAY THE ECU IS MOUNTED GETS INTO ALL OF THE OTHER WIRING HARNESSES OF JUST ABOUT EVERY OTHER SENSOR. I WENT TO TOYOTA AND THE FIRST TECHNICIAN NEVER HEARD THAT HAPPENING BEFORE BUT ANOTHER OVERHEARD OUR CONVERSATION AND SAID "I BET YOU HAVE A 4RUNNER" SO YEAH ITS HAPPENED TO OTHERS. THEY WANTED NEARLY $4500 TO FIX THE ISSUE. NEW ENGINE WIRING HARNESS $1500-$2000 AND ANOTHER $1000 FOR THE LABOR AND THE REST OF THE ESTIMATE IS FOR OTHER PARTS NOT SPECIFIED. THEIR SOLUTION IS TO CUT THE WIRE BELOW THE TRANSMISSION WIRING HARNESS CONNECTOR THEN SPLICE AND SOLDER BUT I WOULD HAVE TO REPLACE NEARLY ALL THE CRITICAL WIRING IN THAT CAR. I CANT GIVE AN EXACT DATE ON WHEN IT STARTED GOING WRONG BUT I CAN LOOK AT THE SERVICE HISTORY ON THE TOYOTA OWNER'S WEBSITE AND GIVE YOU THIS TIMELINE. 0-89,997 - NO, ISSUES WITH EMISSIONS OR ELECTRICAL SYSTEMS. 89,997MI - 90K SERVICE DONE - TRANSMISSION FLUID CHANGE W/FLUSH DONE AT DEALER. 98,152MI - CAR REPORTING LEAN CODES, DEALER REPLACES MAF SENSOR. 100,117 - CAR REPORTING LEAN CODES, DEALER REPLACES O2 SENSOR AND A/F SENSOR BANK 2 POSITION 1 & 2 105,312 - CAR REPORTING LEAN CODES, DEALER REPLACES BANK 1 POSITION 1 A/F SENSOR AND MAF SENSOR AGAIN. TOTAL COST $798.76. THERE ARE MORE BUT I HAVE CHARACTER LIMITS. I WILL SAY THIS THOUGH THAT THE PROBLEM SHOULD HAVE BEEN OBVIOUS BECAUSE YOU CAN CLEARLY SEE THE FLUID WHEN YOU UNPLUG THE O2 SENSOR FROM THE HARNESS BUT TOYOTA WAS CONTENT CHARGING ME $500-$700 EVERY 10K MILES WITHOUT ACTUALLY FIXING IT. CAR STILL REMAINED FUNCTIONAL BUT RUINED FUEL ECONOMY.

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