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Most Common Car Issues Vin Explorer

Most Common Car Issues

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7M-GTE

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MOST COMMON PROBLEMS

TOYOTA Supra 1987

The 1987 Toyota Supra Turbo is a classic hatchback featuring a 3.0L inline-6 engine with a turbocharger. Powered by the 7M-GTE engine, it delivers a thrilling performance with electronic fuel injection and dual overhead cam design. Manufactured in Japan, this iconic model remains a favorite among car enthusiasts.

Spec:

Engine Configuration
In-Line
Engine Manufacturer
Toyota
Engine Model
7M-GTE
Engine Number of Cylinders
6
Other Engine Info
Electronic Fuel Injection

Problems:

Head gasket failure
The 7M-GTE engine is notorious for head gasket issues due to insufficient factory torque specifications on the head bolts.
Rod knock
Over time, the connecting rod bearings can wear out, causing a knocking noise, especially if the engine has been subjected to high power levels or poor maintenance.
Turbocharger problems
The stock turbocharger can wear out, leading to issues such as oil leaks, loss of boost pressure, and decreased performance.
Idle issues
Problems with the electronic fuel injection system or sensors (such as the idle air control valve) can cause rough or unstable idling.
Crankshaft pulley failure
The crankshaft pulley (harmonic balancer) can develop cracks and eventually fail, causing engine vibration and potential damage.
Oil leaks
Common areas for oil leaks include the valve cover gasket, camshaft seals, and front main seal.
Cooling system problems
The cooling system can develop issues such as radiator leaks, water pump failure, or thermostat problems, leading to overheating.
Sensor failures
Various sensors (e.g., oxygen sensors, coolant temperature sensors) can fail over time, causing engine performance issues and check engine lights.
TOYOTA Supra 1989

The 1989 Toyota Supra Turbo is a sporty hatchback featuring a 3.0L inline-6 engine with 2954 cc displacement and electronic fuel injection. Manufactured in Japan by Toyota Motor Corporation, it comes with a turbocharged 7M-GTE engine and a dual overhead cam valve train design. This 3-door vehicle boasts a manual seat belt system and a distinctive sport roof. Powered by gasoline and equipped with water cooling, it falls under the Class 1 weight rating.

Spec:

Engine Configuration
In-Line
Engine Manufacturer
Toyota
Engine Model
7M-GTE
Engine Number of Cylinders
6
Other Engine Info
Electronic Fuel Injection

Problems:

Head gasket failure
The Toyota 7M-GTE engine is notorious for its head gasket issues, often due to the factory torque specifications being too low.
Overheating
This can be related to the head gasket problem and can cause significant engine damage if not addressed promptly.
Turbocharger issues
The turbocharger in the 7M-GTE can wear out over time, leading to decreased performance and efficiency.
Oil leaks
Due to aging seals and gaskets, oil leaks are a common issue in older engines like the 7M-GTE.
Idle problems
Issues with the electronic fuel injection system can sometimes cause rough or unstable idling.
Timing belt wear
Like many engines, the 7M-GTE's timing belt can wear out, leading to potential engine failure if it breaks.
Vacuum leaks
Cracked or loose vacuum hoses can cause a variety of performance issues, including poor fuel economy and rough running.
Ignition system problems
Worn out spark plugs, ignition coils, or other components in the ignition system can lead to misfires and poor engine performance.
Fuel injector problems
Dirty or failing fuel injectors can lead to poor fuel delivery, affecting engine performance and efficiency.
TOYOTA Supra 1989

The 1989 Toyota Supra Turbo is a classic hatchback featuring a 3.0L inline-6 engine with electronic fuel injection. Manufactured in Japan by Toyota Motor Corporation, it boasts a turbocharged 7M-GTE engine and dual overhead cam (DOHC) valve train. This three-door passenger car is known for its sporty performance and iconic design.

Spec:

Engine Configuration
In-Line
Engine Manufacturer
Toyota
Engine Model
7M-GTE
Engine Number of Cylinders
6
Other Engine Info
Electronic Fuel Injection

Problems:

Head gasket failure
The Toyota 7M-GTE engine is notorious for its head gasket issues, often due to the factory torque specifications being too low.
Overheating
This can be related to the head gasket problem and can cause significant engine damage if not addressed promptly.
Turbocharger issues
The turbocharger in the 7M-GTE can wear out over time, leading to decreased performance and efficiency.
Oil leaks
Due to aging seals and gaskets, oil leaks are a common issue in older engines like the 7M-GTE.
Idle problems
Issues with the electronic fuel injection system can sometimes cause rough or unstable idling.
Timing belt wear
Like many engines, the 7M-GTE's timing belt can wear out, leading to potential engine failure if it breaks.
Vacuum leaks
Cracked or loose vacuum hoses can cause a variety of performance issues, including poor fuel economy and rough running.
Ignition system problems
Worn out spark plugs, ignition coils, or other components in the ignition system can lead to misfires and poor engine performance.
Fuel injector problems
Dirty or failing fuel injectors can lead to poor fuel delivery, affecting engine performance and efficiency.
TOYOTA Supra 1990

The 1990 Toyota Supra Turbo is a classic hatchback with a 3.0L inline-6 engine (7M-GTE) featuring electronic fuel injection and a turbocharger. Manufactured by Toyota in Japan, this model includes a sport roof and is designed for sporty performance. It offers the driver seat airbag and manual seat belts for safety. With a water-cooled engine and a gross vehicle weight rating under 6,000 lbs, it's a lightweight yet powerful passenger car.

Spec:

Engine Configuration
In-Line
Engine Manufacturer
Toyota
Engine Model
7M-GTE
Engine Number of Cylinders
6
Other Engine Info
Electronic Fuel Injection

Problems:

Blown head gasket
The Toyota 7M-GTE engine is notorious for head gasket issues due to the factory torque specifications often being insufficient.
Oil leaks
Commonly from the valve cover gaskets and front main seal, which can degrade over time and cause leaks.
Rod knock
This can occur due to inadequate oiling or maintenance issues, leading to rod bearing failure.
Turbocharger failure
The turbocharger on the 7M-GTE can wear out over time, leading to decreased performance and potential engine damage if not addressed.
Idle issues
Problems with the idle air control valve or vacuum leaks can cause irregular idling.
Electronic fuel injection problems
Issues with the electronic fuel injection system can lead to poor performance, rough idling, and starting problems.
TOYOTA Supra 1990

The 1990 Toyota Supra Turbo is a Japanese-made hatchback with a 3.0L inline-6 engine featuring a 7M-GTE turbocharged configuration and electronic fuel injection. This sporty model includes a driver-side airbag and manual seat belts. With its dual overhead cam design and water-cooling system, it’s a high-performance vehicle known for its reliability and engineering excellence. The Supra's distinctive trim includes a sport roof, enhancing its sleek, dynamic look.

Spec:

Engine Configuration
In-Line
Engine Manufacturer
Toyota
Engine Model
7M-GTE
Engine Number of Cylinders
6
Other Engine Info
Electronic Fuel Injection

Problems:

Blown head gasket
The Toyota 7M-GTE engine is notorious for head gasket issues due to the factory torque specifications often being insufficient.
Oil leaks
Commonly from the valve cover gaskets and front main seal, which can degrade over time and cause leaks.
Rod knock
This can occur due to inadequate oiling or maintenance issues, leading to rod bearing failure.
Turbocharger failure
The turbocharger on the 7M-GTE can wear out over time, leading to decreased performance and potential engine damage if not addressed.
Idle issues
Problems with the idle air control valve or vacuum leaks can cause irregular idling.
Electronic fuel injection problems
Issues with the electronic fuel injection system can lead to poor performance, rough idling, and starting problems.
TOYOTA Supra 1990

The 1990 Toyota Supra Turbo is a classic hatchback equipped with a 3.0L inline-6 engine (7M-GTE) featuring electronic fuel injection and a turbocharger. This sporty model, built in Japan, offers a manual seat belt type and a driver seat-only airbag. With its dual overhead cam design and water cooling system, the Supra Turbo is both powerful and reliable. Ideal for enthusiasts, this car combines performance with the iconic '90s style.

Spec:

Engine Configuration
In-Line
Engine Manufacturer
Toyota
Engine Model
7M-GTE
Engine Number of Cylinders
6
Other Engine Info
Electronic Fuel Injection

Problems:

Blown head gasket
The Toyota 7M-GTE engine is notorious for head gasket issues due to the factory torque specifications often being insufficient.
Oil leaks
Commonly from the valve cover gaskets and front main seal, which can degrade over time and cause leaks.
Rod knock
This can occur due to inadequate oiling or maintenance issues, leading to rod bearing failure.
Turbocharger failure
The turbocharger on the 7M-GTE can wear out over time, leading to decreased performance and potential engine damage if not addressed.
Idle issues
Problems with the idle air control valve or vacuum leaks can cause irregular idling.
Electronic fuel injection problems
Issues with the electronic fuel injection system can lead to poor performance, rough idling, and starting problems.
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