Common in older Toyota engines, caused by worn gaskets or seals.

Needs regular replacement; failure can cause severe engine damage.

Often due to aging radiator or hoses, leading to overheating.

Common issue, can lead to oil leaks and engine misfires.

Can cause rough idling, poor fuel economy, and engine misfires.

Can lead to poor engine performance and fuel inefficiency.

Affects engine performance and fuel efficiency.

Can cause poor acceleration and stalling problems.

Can lead to exhaust leaks and reduced engine performance.

Affects fuel mixture and emissions, leading to poor performance.

The 2UZ-FE engine is known for developing oil leaks, especially around the valve cover gaskets and camshaft seals.

The timing belt on this engine should be replaced every 90,000 miles. Failure to do so can result in belt wear or breakage, leading to severe engine damage.

This engine can develop leaks at the intake manifold gasket, which can cause rough idling and poor performance.

The exhaust manifolds on the 2UZ-FE are prone to cracking, which can result in exhaust leaks and reduced engine performance.

Fuel injectors on this engine can become clogged or fail, leading to poor fuel economy and engine misfires.

Radiator and water pump failures are common and can lead to engine overheating if not addressed in a timely manner.

The 2UZ-FE engine can experience spark plug wear or fouling, which can cause misfires and reduced fuel efficiency. Regular replacement is necessary.

The throttle body can become dirty or fail, leading to stalling, rough idling, and poor throttle response.

The 2UZ-FE engine is known for developing oil leaks, particularly from the valve cover gaskets and oil pan gasket.

This engine uses a timing belt, which can wear out and potentially break if not replaced at recommended intervals, leading to significant engine damage.

Some owners report higher-than-normal oil consumption, which may be due to worn piston rings or valve seals.

Issues with oxygen sensors and mass airflow sensors can occur, leading to poor engine performance and reduced fuel efficiency.

Radiator or water pump failures can lead to overheating, potentially causing severe engine damage.

A faulty crankshaft position sensor can cause the engine to stall or fail to start.

Over time, the exhaust manifold may crack, causing exhaust leaks and reducing engine performance.

The 2UZ-FE engine is known for oil leaks, often from the valve cover gaskets or the front crankshaft seal.

The 2UZ-FE engine uses a timing belt, which can wear out and require replacement typically around every 90,000 miles to prevent engine damage.

Fuel injectors may become clogged or malfunction, leading to rough idling or poor fuel economy.

Carbon buildup in the throttle body can cause erratic idling and throttle response issues.

Radiator or water pump failures can occur, leading to overheating if not addressed promptly.

Over time, spark plugs can wear out, resulting in misfires, decreased performance, and poor fuel efficiency.

The MAF sensor can fail, causing engine performance issues and triggering the check engine light.

The exhaust manifolds on the 2UZ-FE engine can develop cracks, leading to exhaust leaks and increased engine noise.

Oxygen sensors can wear out, leading to incorrect fuel mixture and reduced engine efficiency.

The 2UZ-FE engine in the 2006 Lexus GX often experiences oil leaks from the valve cover gaskets, oil pan, or front and rear crankshaft seals.

The timing belt in the 2UZ-FE engine has a limited lifespan and can wear out, potentially leading to engine damage if not replaced at recommended intervals.

The exhaust manifolds on this engine are prone to cracking, which can cause exhaust leaks and affect engine performance.

Fuel injectors in the 2UZ-FE engine can become clogged or fail, leading to poor engine performance, misfires, and reduced fuel efficiency.

Issues with the radiator, water pump, or thermostat can lead to overheating, which can cause significant engine damage if not addressed promptly.

Over time, carbon deposits can accumulate in the intake manifold and on the intake valves, leading to reduced engine performance and efficiency.

The vacuum hoses and lines in the 2UZ-FE engine can develop leaks, leading to rough idling, poor acceleration, and overall decreased engine performance.

The 2UZ-FE engine is known for oil leaks, often from the valve cover gaskets or the front crankshaft seal.

The 2UZ-FE engine uses a timing belt, which can wear out and require replacement typically around every 90,000 miles to prevent engine damage.

Fuel injectors may become clogged or malfunction, leading to rough idling or poor fuel economy.

Carbon buildup in the throttle body can cause erratic idling and throttle response issues.

Radiator or water pump failures can occur, leading to overheating if not addressed promptly.

Over time, spark plugs can wear out, resulting in misfires, decreased performance, and poor fuel efficiency.

The MAF sensor can fail, causing engine performance issues and triggering the check engine light.

The exhaust manifolds on the 2UZ-FE engine can develop cracks, leading to exhaust leaks and increased engine noise.

Oxygen sensors can wear out, leading to incorrect fuel mixture and reduced engine efficiency.

The 2UZ-FE engine is known for developing oil leaks, especially around the valve cover gaskets and camshaft seals.

The timing belt on this engine should be replaced every 90,000 miles. Failure to do so can result in belt wear or breakage, leading to severe engine damage.

This engine can develop leaks at the intake manifold gasket, which can cause rough idling and poor performance.

The exhaust manifolds on the 2UZ-FE are prone to cracking, which can result in exhaust leaks and reduced engine performance.

Fuel injectors on this engine can become clogged or fail, leading to poor fuel economy and engine misfires.

Radiator and water pump failures are common and can lead to engine overheating if not addressed in a timely manner.

The 2UZ-FE engine can experience spark plug wear or fouling, which can cause misfires and reduced fuel efficiency. Regular replacement is necessary.

The throttle body can become dirty or fail, leading to stalling, rough idling, and poor throttle response.

The 2JZ-GE engine can sometimes consume more oil than expected, which may require more frequent oil checks and top-ups.

Over time, the valve stem seals can wear out, leading to oil leaks and potential engine performance issues.

The timing belt on the 2JZ-GE needs regular replacement to avoid the risk of it snapping and causing severe engine damage.

This engine can experience head gasket problems, leading to coolant leaks and potential overheating issues.

The cooling system, including the radiator and water pump, can develop leaks or fail, leading to overheating problems.

Fuel injectors can become clogged or faulty, affecting engine performance and fuel efficiency.

Ignition coils may fail over time, causing misfires and reduced engine performance.

The idle air control valve can become dirty or fail, leading to erratic idling and stalling issues.

Faulty oxygen sensors can result in poor fuel economy and increased emissions.

A failing crankshaft position sensor can cause starting issues and engine stalling.

The 2UZ-FE engine is known for developing oil leaks over time, particularly from the valve cover gaskets and the front crankshaft seal.

The 2UZ-FE engine uses a timing belt which requires regular replacement. If neglected, it can lead to severe engine damage.

The V-shaped configuration can sometimes lead to cracks in the exhaust manifold, causing exhaust leaks and reduced engine performance.

Over time, the fuel injectors can become clogged or fail, leading to poor fuel economy and engine misfires.

As with most high-mileage engines, the spark plugs can wear out and need regular replacement to maintain engine performance.

Carbon deposits can accumulate in the throttle body, causing poor acceleration and idle issues.

Coolant leaks from the radiator, water pump, or hoses can be common and should be addressed to prevent overheating.

The MAF sensor can become dirty or fail, leading to incorrect air-fuel mixture and reduced engine performance.

This can occur in the 2UZ-FE engine due to poor maintenance or lack of regular oil changes, leading to reduced engine performance and potential damage.

The 2UZ-FE engine uses a timing belt that needs regular replacement. If it fails, it can cause severe engine damage.

Overheating issues can lead to head gasket failure, which can cause coolant leaks and engine overheating.

Worn-out or faulty spark plugs can lead to misfires and reduced engine performance.

Dirty or clogged fuel injectors can affect fuel delivery, leading to rough idling and poor acceleration.

Vacuum leaks can cause a variety of issues including rough idling, stalling, and poor fuel economy.

The knock sensor in the 2UZ-FE engine can fail, leading to poor engine performance and reduced fuel efficiency.

Cracks in the exhaust manifold can cause exhaust leaks, leading to reduced engine performance and increased emissions.

The 2UZ-FE engine is known for developing oil leaks, particularly from the valve cover gaskets and oil pan gasket.

The 2UZ-FE engine uses a timing belt that requires regular replacement. If not replaced at the recommended intervals, it can lead to engine failure.

This engine is prone to developing cracks in the exhaust manifold, which can cause exhaust leaks and reduce engine performance.

Over time, carbon can build up in the intake manifold and throttle body, leading to reduced engine efficiency and performance.

Issues with the radiator and cooling system can lead to engine overheating, which is a common problem in older models.

The ignition coils in the 2UZ-FE engine can fail prematurely, leading to misfires and poor engine performance.

The fuel injectors may become clogged or fail, causing poor fuel economy and engine performance issues.

The knock sensors in the 2UZ-FE can fail, leading to engine knocking and reduced performance.

The 2UZ-FE engine is known for developing oil leaks, especially around the valve cover gaskets and camshaft seals.

The timing belt on this engine should be replaced every 90,000 miles. Failure to do so can result in belt wear or breakage, leading to severe engine damage.

This engine can develop leaks at the intake manifold gasket, which can cause rough idling and poor performance.

The exhaust manifolds on the 2UZ-FE are prone to cracking, which can result in exhaust leaks and reduced engine performance.

Fuel injectors on this engine can become clogged or fail, leading to poor fuel economy and engine misfires.

Radiator and water pump failures are common and can lead to engine overheating if not addressed in a timely manner.

The 2UZ-FE engine can experience spark plug wear or fouling, which can cause misfires and reduced fuel efficiency. Regular replacement is necessary.

The throttle body can become dirty or fail, leading to stalling, rough idling, and poor throttle response.

The 2UZ-FE engine in the 2006 Lexus GX often experiences oil leaks from the valve cover gaskets, oil pan, or front and rear crankshaft seals.

The timing belt in the 2UZ-FE engine has a limited lifespan and can wear out, potentially leading to engine damage if not replaced at recommended intervals.

The exhaust manifolds on this engine are prone to cracking, which can cause exhaust leaks and affect engine performance.

Fuel injectors in the 2UZ-FE engine can become clogged or fail, leading to poor engine performance, misfires, and reduced fuel efficiency.

Issues with the radiator, water pump, or thermostat can lead to overheating, which can cause significant engine damage if not addressed promptly.

Over time, carbon deposits can accumulate in the intake manifold and on the intake valves, leading to reduced engine performance and efficiency.

The vacuum hoses and lines in the 2UZ-FE engine can develop leaks, leading to rough idling, poor acceleration, and overall decreased engine performance.

The 2JZ-GE engine can sometimes experience higher-than-normal oil consumption due to worn piston rings or valve seals.

Over time, the timing belt can wear out or stretch, leading to potential engine timing issues or even catastrophic engine damage if it breaks.

The ignition coils on the 2JZ-GE engine may fail, causing misfires, rough idling, and reduced engine performance.

The intake manifold and various vacuum hoses can develop leaks, leading to erratic engine behavior and poor fuel economy.

A faulty camshaft position sensor can cause starting issues, misfires, and poor engine performance.

The cooling system components, such as the radiator, water pump, and thermostat, can fail, leading to engine overheating.

Clogged or malfunctioning fuel injectors can cause poor engine performance, rough idling, and reduced fuel efficiency.

Though less common, the engine can develop head gasket problems, leading to coolant leaks and potential engine overheating.

A dirty or malfunctioning throttle body can cause erratic idling and poor throttle response.

Various sensors, including the oxygen sensor and mass air flow sensor, can fail and lead to poor engine performance and efficiency.

The 2JZ-GE engine is known for developing oil leaks over time, especially from the valve cover gaskets and front main seals.

The 2JZ-GE uses a timing belt, which requires regular replacement to prevent potential engine damage if it fails.

Older engines can develop leaks in the radiator or hoses, potentially leading to overheating.

The ignition coils can fail over time, causing misfires and poor engine performance.

Components like the oxygen sensor and mass airflow sensor can fail, leading to poor fuel economy and performance issues.

The engine may develop vacuum leaks that can cause rough idling and decreased performance.

Over time, carbon deposits can accumulate on intake valves and other components, leading to decreased engine efficiency.

The 2JZ-GE engine can sometimes consume more oil than expected, which may require more frequent oil checks and top-ups.

Over time, the valve stem seals can wear out, leading to oil leaks and potential engine performance issues.

The timing belt on the 2JZ-GE needs regular replacement to avoid the risk of it snapping and causing severe engine damage.

This engine can experience head gasket problems, leading to coolant leaks and potential overheating issues.

The cooling system, including the radiator and water pump, can develop leaks or fail, leading to overheating problems.

Fuel injectors can become clogged or faulty, affecting engine performance and fuel efficiency.

Ignition coils may fail over time, causing misfires and reduced engine performance.

The idle air control valve can become dirty or fail, leading to erratic idling and stalling issues.

Faulty oxygen sensors can result in poor fuel economy and increased emissions.

A failing crankshaft position sensor can cause starting issues and engine stalling.

The 2JZ-GE engine can develop oil leaks from the valve cover gaskets and camshaft seals over time.

The timing belt requires regular replacement to prevent engine damage, as it can wear out and potentially break.

Ignition coils may fail, leading to misfires and poor engine performance.

Radiator and water pump issues can cause the engine to overheat if not properly maintained.

Clogged or failing fuel injectors can lead to rough idling and decreased fuel efficiency.

A faulty PCV valve can cause oil consumption and poor engine performance.

Carbon buildup in the throttle body can cause poor acceleration and stalling.

A failing crankshaft position sensor can result in engine stalling or failure to start.

Over time, the head gasket may fail, leading to coolant leaks and engine overheating.

Faulty oxygen sensors can affect fuel economy and emissions.

The 2JZ-GE engine can develop oil leaks, often from the valve cover gasket or camshaft seals.

This engine uses a timing belt that requires regular replacement to avoid engine damage.

Issues with the idle air control valve can cause rough or unstable idling.

Radiator or water pump failures can lead to engine overheating.

Common problems include malfunctioning oxygen sensors and mass air flow sensors.

The ignition coils may fail, leading to misfires and poor engine performance.

Dirty or failing fuel injectors can cause poor fuel economy and reduced engine performance.

Over time, the head gasket may fail, leading to coolant leaks and potential engine overheating.

Aging rubber hoses can crack and cause vacuum leaks, leading to performance issues.

The exhaust manifold can develop cracks over time, leading to exhaust leaks and increased noise.

The 2JZ-GE engine can sometimes consume more oil than expected, which may require more frequent oil checks and top-ups.

Over time, the valve stem seals can wear out, leading to oil leaks and potential engine performance issues.

The timing belt on the 2JZ-GE needs regular replacement to avoid the risk of it snapping and causing severe engine damage.

This engine can experience head gasket problems, leading to coolant leaks and potential overheating issues.

The cooling system, including the radiator and water pump, can develop leaks or fail, leading to overheating problems.

Fuel injectors can become clogged or faulty, affecting engine performance and fuel efficiency.

Ignition coils may fail over time, causing misfires and reduced engine performance.

The idle air control valve can become dirty or fail, leading to erratic idling and stalling issues.

Faulty oxygen sensors can result in poor fuel economy and increased emissions.

A failing crankshaft position sensor can cause starting issues and engine stalling.

The 2UZ-FE engine is known to develop oil leaks from valve cover gaskets and front crankshaft seals as it ages.

This engine uses a timing belt that should be replaced at regular intervals (typically every 90,000 miles) to prevent failure, which can lead to severe engine damage.

Some owners report higher-than-normal oil consumption, which can be due to worn piston rings or valve seals.

Oxygen sensors can fail over time, leading to poor fuel economy and increased emissions.

Carbon buildup in the throttle body can cause rough idling and poor acceleration.

The knock sensors can fail, leading to poor engine performance and triggering the check engine light.

Although less common, head gasket failure can occur, leading to coolant leaks and engine overheating.

Spark plugs and ignition coils can wear out and need replacement to maintain optimal engine performance.

Clogged or malfunctioning fuel injectors can cause misfires and poor engine performance.

The 2UZ-FE engine is known for oil leaks, often from the valve cover gaskets or the front crankshaft seal.

The 2UZ-FE engine uses a timing belt, which can wear out and require replacement typically around every 90,000 miles to prevent engine damage.

Fuel injectors may become clogged or malfunction, leading to rough idling or poor fuel economy.

Carbon buildup in the throttle body can cause erratic idling and throttle response issues.

Radiator or water pump failures can occur, leading to overheating if not addressed promptly.

Over time, spark plugs can wear out, resulting in misfires, decreased performance, and poor fuel efficiency.

The MAF sensor can fail, causing engine performance issues and triggering the check engine light.

The exhaust manifolds on the 2UZ-FE engine can develop cracks, leading to exhaust leaks and increased engine noise.

Oxygen sensors can wear out, leading to incorrect fuel mixture and reduced engine efficiency.

The 2UZ-FE engine is known for developing oil leaks, particularly from the valve cover gaskets and oil pan gaskets over time.

This engine uses a timing belt that requires periodic replacement, typically around 90,000 miles. Failure to do so can result in severe engine damage.

Some owners report that the engine consumes more oil than expected, which can be due to worn piston rings or valve seals.

Radiator and water pump failures can lead to coolant leaks, which, if not addressed, can cause the engine to overheat.

Ignition coil packs can fail, leading to engine misfires. This is often accompanied by a check engine light and rough running conditions.

Over time, carbon can build up on the intake valves and combustion chambers, leading to reduced engine performance and fuel efficiency.

This can occur in the 2UZ-FE engine due to poor maintenance or lack of regular oil changes, leading to reduced engine performance and potential damage.

The 2UZ-FE engine uses a timing belt that needs regular replacement. If it fails, it can cause severe engine damage.

Overheating issues can lead to head gasket failure, which can cause coolant leaks and engine overheating.

Worn-out or faulty spark plugs can lead to misfires and reduced engine performance.

Dirty or clogged fuel injectors can affect fuel delivery, leading to rough idling and poor acceleration.

Vacuum leaks can cause a variety of issues including rough idling, stalling, and poor fuel economy.

The knock sensor in the 2UZ-FE engine can fail, leading to poor engine performance and reduced fuel efficiency.

Cracks in the exhaust manifold can cause exhaust leaks, leading to reduced engine performance and increased emissions.

The 2JZ-GE engine can sometimes experience higher-than-normal oil consumption due to worn piston rings or valve seals.

Over time, the timing belt can wear out or stretch, leading to potential engine timing issues or even catastrophic engine damage if it breaks.

The ignition coils on the 2JZ-GE engine may fail, causing misfires, rough idling, and reduced engine performance.

The intake manifold and various vacuum hoses can develop leaks, leading to erratic engine behavior and poor fuel economy.

A faulty camshaft position sensor can cause starting issues, misfires, and poor engine performance.

The cooling system components, such as the radiator, water pump, and thermostat, can fail, leading to engine overheating.

Clogged or malfunctioning fuel injectors can cause poor engine performance, rough idling, and reduced fuel efficiency.

Though less common, the engine can develop head gasket problems, leading to coolant leaks and potential engine overheating.

A dirty or malfunctioning throttle body can cause erratic idling and poor throttle response.

Various sensors, including the oxygen sensor and mass air flow sensor, can fail and lead to poor engine performance and efficiency.

The 2UZ-FE engine in the 2006 Lexus GX often experiences oil leaks from the valve cover gaskets, oil pan, or front and rear crankshaft seals.

The timing belt in the 2UZ-FE engine has a limited lifespan and can wear out, potentially leading to engine damage if not replaced at recommended intervals.

The exhaust manifolds on this engine are prone to cracking, which can cause exhaust leaks and affect engine performance.

Fuel injectors in the 2UZ-FE engine can become clogged or fail, leading to poor engine performance, misfires, and reduced fuel efficiency.

Issues with the radiator, water pump, or thermostat can lead to overheating, which can cause significant engine damage if not addressed promptly.

Over time, carbon deposits can accumulate in the intake manifold and on the intake valves, leading to reduced engine performance and efficiency.

The vacuum hoses and lines in the 2UZ-FE engine can develop leaks, leading to rough idling, poor acceleration, and overall decreased engine performance.