Most Common Car Issues
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MOST COMMON PROBLEMS
TOYOTA MR2 1986
The 1986 Toyota MR2 GT is a sporty coupe featuring a 1.6-liter in-line 4-cylinder engine, known for its 4A-GELC model with electronic fuel injection. Manufactured in Japan, it boasts a dual overhead cam (DOHC) design and a lightweight, nimble build, making it a classic favorite among enthusiasts.
Spec:
Engine Configuration
In-Line
Engine Manufacturer
Toyota
Engine Model
4A-GELC
Engine Number of Cylinders
4
Other Engine Info
Electronic fuel injection Transverse mounted engine
Problems:
Oil leaks
The 4A-GELC engine is known for developing oil leaks, especially around the valve cover gasket and oil pan gasket. Over time, the gaskets can degrade and cause oil to seep out.
Overheating
This engine can be prone to overheating, particularly if the cooling system is not maintained properly. Issues with the radiator, thermostat, or water pump can lead to increased engine temperatures.
Timing belt wear
The timing belt in the 4A-GELC engine needs regular replacement. If not replaced at recommended intervals, it can wear out and potentially break, causing significant engine damage.
Idle fluctuation
Problems with the idle air control valve or throttle position sensor can lead to unstable or fluctuating idle speeds.
Fuel injector issues
The electronic fuel injection system can suffer from clogged or malfunctioning injectors, leading to poor performance and fuel economy.
Ignition system problems
Issues with the ignition coil, distributor, or spark plugs can cause misfires, rough running, and reduced power.
Vacuum leaks
The age of the vehicle can lead to cracked or brittle vacuum hoses, causing vacuum leaks that can affect engine performance and efficiency.
Sensor failures
Components like the coolant temperature sensor or oxygen sensor can fail over time, leading to incorrect readings and poor engine management.
Exhaust manifold cracks
The exhaust manifold can develop cracks, particularly due to heat cycling, leading to exhaust leaks and potential loss of power.
Engine mount wear
The transverse mounted engine can cause more wear on engine mounts, leading to increased vibration and noise.