IllustrationCONSUMER SMELLS GAS INSIDE OF THE VEHICLE DUE TO THE THROTTLE POSITION SENSOR. PLEASE GIVE ANY FURTHER DETAILS. *AK
1999 Toyota 4 Runner
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 1999 Toyota 4 Runner do not stand out strongly from the model-year median of 96.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all 4 Runner years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 25 of 110 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Tires. Review the 27 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes, Hydraulic. Review the 15 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 12 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
18 crash reports3 fire reports10 injury reports
What owners actually said
110 reportsTIRES ON THE VEHICLE AT THE TIME OF PURCHASE WERE OF THE INCORRECT SIZE WHICH CAUSED SPEEDODMETER TO REGISTER INCORRECT SPEEDS. PLEASE GIVE ANY FURTHER DETAILS. *AK
INCORRECT READING OF GAS LEVEL IN TANK. BEEN TO DEALER ON THREE DIFFERENT OCCASIONS AND NOTHING CAN BE DONE. CAN NHTSA HELP IN THIS MATTER. *AK
DEALER WANTS VEHICLE FOR 30 DAYS TO REPAIR IT WHICH IS EXCESSIVE
REAR VIEW MIRROR LOCATION CAUSES A REFLECTION THAT OBSTRUCTS VIEW, THE REFLECTION IS OF THE OVER HEAD CONSOLE. MJS
THE VEHICLE STALLS AND DIES, GIVING THE DRIVER NO INDICATION. DEALER HAS NOT BEEN ABLE TO DUPLICATE THE PROBLEM. *AK
ONGOING PROBLEM WITH GAS GAUGE NOT RESPONDING PROPERLY. CONSUMER UNABLE TO KNOW HOW MUCH GAS IS IN THE TANK. DEALER NOTIFIED, AND INFORMED CONSUMER THAT THERE ARE NO CORRECTIONS AT THIS TIME. SEEKING NHTSA HELP IN THIS MATTER. *AK
VEHICLE STALLS/QUITS WHEN BRAKING, USUALLY BETWEEN 0 AND 10 MPH. STARTED AFTER HAVING VEHICLE FOR 2 WEEKS. DEALER FIRST VISIT, THEY COULD FIND NO PROBLEMS. SECOND VISIT, CHANGED THROTTLE BODY, DID NOT SOLVE PROBLEM. SAID IT WAS PART OF A GROUP THAT NEEDS NEW COMPUTER, THAT DID NOT HELP EITHER, SAID IT MAY BE THE TRANSMISSION…
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VEHICLE STALLS/QUITS WHEN BRAKING, USUALLY BETWEEN 0 AND 10 MPH. STARTED AFTER HAVING VEHICLE FOR 2 WEEKS. DEALER FIRST VISIT, THEY COULD FIND NO PROBLEMS. SECOND VISIT, CHANGED THROTTLE BODY, DID NOT SOLVE PROBLEM. SAID IT WAS PART OF A GROUP THAT NEEDS NEW COMPUTER, THAT DID NOT HELP EITHER, SAID IT MAY BE THE TRANSMISSION. PROBLEM STILL NOT SOLVED. TOYOTA TECH LINE TOLD THE LOCAL DEALER IT MUST BE A FLUKE JUST GIVE IT BACK TO THE CUSTOMER (ME). I GIVE A LOT OF CREDIT TO THE LOCAL DEALER SERVICE PERSONNEL, THEY TOLD ME THIS AND TOLD ME IT WAS UNSAFE TO DRIVE. THEY ARE WORKING THE PROBLEM AND GAVE ME A LOANER CAR. PROBLEM IS GETTING WORSE, AT FIRST IT WAS OCCASIONALLY, BUT NOW IT IS STILL INTERMITENT, BUT WILL OCCUR NUMEROUS TIMES A DAY, IF YOU DRIVE IT. *AK
THE FOLLOWING WORK ORDER WAS GIVEN TO ME. FOUND DCT # PO420 INEFFECIENT CATALYTIC CONVERTER. TESTED A/F SENSOR IT WAS GOOD, IT MEASURED 1.8 OHMS. TESTED 02 SENSOR IT MEASURED 19.0 OHMS N@ 1800 DEGREES. DIAGNOSED SWITCHED GROUNDS AT E.C.U. E10 # 8 AND # 17 . REMOVED AND SWITCHED WIRES TO THE CORRECT POSITIONS. ERACED CODE IN ECU …
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THE FOLLOWING WORK ORDER WAS GIVEN TO ME. FOUND DCT # PO420 INEFFECIENT CATALYTIC CONVERTER. TESTED A/F SENSOR IT WAS GOOD, IT MEASURED 1.8 OHMS. TESTED 02 SENSOR IT MEASURED 19.0 OHMS N@ 1800 DEGREES. DIAGNOSED SWITCHED GROUNDS AT E.C.U. E10 # 8 AND # 17 . REMOVED AND SWITCHED WIRES TO THE CORRECT POSITIONS. ERACED CODE IN ECU MEMORY.
ENGINE STALLS WHILE VEHICLE IN OPERATION. STALLING OCCURS DURING DECELERATION (E.G. APPROACHING A TOLL BOOTH) AND ACCELERATION (E.G. ACCELERATING AFTER MAKING A FULL STOP). FAILURES ARE SPORADIC AND RANDOM (3X/MONTH). DEALER CLAIMS TO HAVE 4 TO 5 VEHICLES (SAME MAKE AND MODEL) WITH SAME PROBLEM. DEALER CLAIMS INABILITY TO FIX PR…
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ENGINE STALLS WHILE VEHICLE IN OPERATION. STALLING OCCURS DURING DECELERATION (E.G. APPROACHING A TOLL BOOTH) AND ACCELERATION (E.G. ACCELERATING AFTER MAKING A FULL STOP). FAILURES ARE SPORADIC AND RANDOM (3X/MONTH). DEALER CLAIMS TO HAVE 4 TO 5 VEHICLES (SAME MAKE AND MODEL) WITH SAME PROBLEM. DEALER CLAIMS INABILITY TO FIX PROBLEM UNTIL SPECIAL TECHNICAL TEAM ARRIVES FROM MANUFACTURER.
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.