Most Common Car Issues

Selected parameters

Model
4-Runner
Model Year
1991

Add more parameters

MOST COMMON PROBLEMS

TOYOTA 4-Runner 1991

The 1991 Toyota 4-Runner SR5 is a robust SUV equipped with a 3.0L V6 engine producing 150 hp. Featuring 4WD capability and electronic fuel injection, this vehicle is designed to handle various terrains. Manufactured in Toyota City, Japan, it combines reliability with versatile performance.

Spec:

Engine Brake (hp) From
150
Engine Brake (hp) To
150
Engine Configuration
V-Shaped
Engine Manufacturer
Toyota
Engine Model
3VZ-E
Engine Number of Cylinders
6
Other Engine Info
Electronic fuel Injection

Problems:

Head gasket failure
The 3VZ-E engine is known for head gasket issues due to the material and design used, leading to coolant leaks and overheating.
Timing belt wear
This engine uses a timing belt that needs regular maintenance. If not replaced timely, it can break and cause severe engine damage.
Valve cover gasket leaks
Oil leaks from the valve cover gaskets are common, which can lead to oil dripping onto the exhaust and causing smoke or fire hazards.
Oil sludge buildup
Poor maintenance and infrequent oil changes can lead to sludge buildup, affecting engine performance and longevity.
Fuel injector problems
The electronic fuel injection system can have issues with fuel injectors getting clogged or failing, leading to poor engine performance and misfires.
Crankshaft pulley failure
The crankshaft pulley can deteriorate over time, causing issues with the drive belt and potentially leading to engine damage if not addressed.
Exhaust manifold cracks
The exhaust manifold can develop cracks over time, causing exhaust leaks, increased noise, and potential emissions issues.
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