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2001 Toyota 4Runner Problems

Find the most common issues based on 2001 Toyota 4Runner owner complaints.
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Most Common 2001 Toyota 4Runner Problems

At higher mileages, (125,000-150,000) the automatic transmission may not shift correctly. This can be caused by the throttle position sensor being out of adjustment or a shift solenoid needing to b...
If the car will not start, the most likely problem is worn or corroded solenoid contacts in the starter. Usually, these parts can be replaced without purchasing a new starter.
The evaporative emission (EVAP) system may illuminate the vehicle's Check Engine Light due to intermittent failure of the charcoal canister purge control solenoid valve or canister failure. Upon fa...
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3 Known 2001 Toyota 4Runner Brakes Problems

Front brake rotors can wear causing a pulsation felt in the brake pedal. Our technicians tell us this condition is best corrected by replacement of the front rotors and brake pads.
At 125,000-150,000 miles, the Master Cylinder may need replacing. It is critical to adjust the brake pedal to Master Cylinder pushrod clearance or the brakes will drag and over heat.
At higher mileages, an anti-lock brake system wheel speed sensor may wear out and illuminate the ABS warning light. It is recommended to replace the sensor with a factory part and be sure to clea...

3 Known 2001 Toyota 4Runner Drive Train Problems

At higher mileages, (125,000-150,000) the automatic transmission may not shift correctly. This can be caused by the throttle position sensor being out of adjustment or a shift solenoid needing to b...
The 1996-2002 Toyota 4Runner with the automatic transmission may develop an issue which is commonly known as the "strawberry milkshake". The name is based on the color and consistency of the fluid...
Owners frequently complain of leaking rear axle seals, which leaves gear oil on the inside of the rear tires and on the ground near the wheels. The leaky seals allow gear oil to drip onto the rear...

3 Known 2001 Toyota 4Runner Electrical & Lights Problems

If the car will not start, the most likely problem is worn or corroded solenoid contacts in the starter. Usually, these parts can be replaced without purchasing a new starter.
If the engine will not crank over, the most common problem is the starter. These will tend to go out at about 100,00-125,000 miles. Sometimes it is only the starter solenoid, but often the comple...
On higher mileage vehicles, an engine misfire may develop and/or the Check Engine Light may illuminate due to a failed ignition coil. It is not uncommon to replace all the coils when the first one ...

2 Known 2001 Toyota 4Runner Engine Problems

Loud rattling or loud slapping may be heard from the engine on the 1996-2002 Toyota 4Runner with the 2.7L I4 engine. These noises has two known causes: a failed balance shaft bearing, and a faile...
The Toyota 4Runner with the 2.7L I4 engine has a known issue with the valves that if left unchecked, will cause burned valves and engine performance issues. The engine ‘breathes’ thro...

4 Known 2001 Toyota 4Runner Exhaust & Emissions Problems

The evaporative emission (EVAP) system may illuminate the vehicle's Check Engine Light due to intermittent failure of the charcoal canister purge control solenoid valve or canister failure. Upon fa...
The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperat...
When a mass air flow sensor problem occurs, resulting in a loss of power or hesitation on acceleration, the Check Engine Light will illuminate, perhaps indicating random cylinder misfire. The mass ...

1 Known 2001 Toyota 4Runner Heating & Air Conditioning Problem

Vehicles equipped with rear passenger heating may have issues with the engine coolant lines that supply warm coolant to the rear heater. These lines frequently leak, causing engine overheating and...

0 Known 2001 Toyota 4Runner Maintenance Problems

1 Known 2001 Toyota 4Runner Miscellaneous Problem

2 Known 2001 Toyota 4Runner Suspension & Steering Problems

At higher mileages (125,000 -150,000) the power steering pump may begin to leak on the 6 cylinder vehicles and could require replacement.
Toyota issued a recall on the lower ball joint due to the possibility of premature wear from improper finishing in production. The ball joints will be replaced under the recall. This recall applies...

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Known 2001 Toyota 4Runner Problems & Complaints

At 125,000-150,000 miles, the Master Cylinder may need replacing. It is critical to adjust the brake pedal to Master Cylinder pushrod clearance or the brakes will drag and over heat.
At higher mileages, (125,000-150,000) the automatic transmission may not shift correctly. This can be caused by the throttle position sensor being out of adjustment or a shift solenoid needing to b...
The evaporative emission (EVAP) system may illuminate the vehicle's Check Engine Light due to intermittent failure of the charcoal canister purge control solenoid valve or canister failure. Upon fa...
When a mass air flow sensor problem occurs, resulting in a loss of power or hesitation on acceleration, the Check Engine Light will illuminate, perhaps indicating random cylinder misfire. The mass ...
Front brake rotors can wear causing a pulsation felt in the brake pedal. Our technicians tell us this condition is best corrected by replacement of the front rotors and brake pads.
If the engine will not crank over, the most common problem is the starter. These will tend to go out at about 100,00-125,000 miles. Sometimes it is only the starter solenoid, but often the comple...
The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperat...
At higher mileages (125,000 -150,000) the power steering pump may begin to leak on the 6 cylinder vehicles and could require replacement.
On higher mileage vehicles, an engine misfire may develop and/or the Check Engine Light may illuminate due to a failed ignition coil. It is not uncommon to replace all the coils when the first one ...
The Toyota 4Runner with the 2.7L I4 engine has a known issue with the valves that if left unchecked, will cause burned valves and engine performance issues. The engine ‘breathes’ thro...
At higher mileages, an anti-lock brake system wheel speed sensor may wear out and illuminate the ABS warning light. It is recommended to replace the sensor with a factory part and be sure to clea...
The heater circuit for the oxygen sensor tends to have a higher than normal failure rate. Failure of the oxygen sensor heater circuit will illuminate the Check Engine Light. The internal oxygen sen...
The 1996-2002 Toyota 4Runner with the automatic transmission may develop an issue which is commonly known as the "strawberry milkshake". The name is based on the color and consistency of the fluid...
Loud rattling or loud slapping may be heard from the engine on the 1996-2002 Toyota 4Runner with the 2.7L I4 engine. These noises has two known causes: a failed balance shaft bearing, and a faile...
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