Engine And Engine Cooling Related Problems of the 2003 Toyota 4Runner

Table 1 shows 16 common engine and engine cooling related problems of the 2003 Toyota 4Runner. The number one most common problem is related to the engine exhaust system (39 problems). The second most common problem is related to the catalytic convertor (21 problems).


Recently reported Engine And Engine Cooling problems of the 2003 Toyota 4Runner

The Engine Exhaust System problem

This 2003 Toyota 4runner has 135,000 miles on the odometer and the frame and exhaust system including catalytic converter are completely rusted out and the vehicle is now unsafe to drive. Some frame components have completely rusted and broken off from the frame I. E.   Read details...

The Catalytic Convertor problem

: the contact stated while driving 40 mph uphill, a strong odor was noticed. There were no warning lights illuminated prior to the incident. The dealership was contacted, who determined the catalytic converter was producing the odor. The extended warranty covered the replacement.   Read details...

The Engine And Engine Cooling problem

The frame of the car has been rusting at a significant rate in the last 4 years. Mechanic identified major rust issues that would make the vehicle not safe in case of an accident.   Read details...


Engine And Engine Cooling related problems in other Toyota 4Runner model year vehicles:



Safety Ratings of 4Runner Cars
Fuel Economy of 4Runner Vehicles
4Runner Service Bulletins
4Runner Safety Recalls
4Runner Defect Investigations