Range Rover crankshaft failure

A Land Rover Range Rover crankshaft failure is the main cause of engine failure due to the crankshaft’s design being compact and narrow, making the rod-bearing journals and counterweights weak. It’s normally due to poor maintenance, an aggressive driving style, or repeated periods of maximum load.

Read on to see further signs of a failing crankshaft, common causes, and if you can fix it.

What models are affected?

• Land Rover Defender
• Range Rover Discovery
• Range Rover Evoque
• Range Rover Sport
• Range Rover Velar
• Range Rover Vogue

Signs and symptoms

When it comes to crankshaft failure in Range Rovers, there are several signs and symptoms that you should be aware of.

These indicators can help you identify whether your vehicle is suffering from this unfortunate issue. Look out for the following:

• Engine Misfires: If you notice your Range Rover’s engine misfiring or running rough, it could be a sign of crankshaft failure. This occurs when the crankshaft is unable to properly rotate, causing irregular combustion.
• Loud Knocking Noise: A distinct knocking noise coming from the engine can suggest crankshaft failure. As the crankshaft deteriorates, the internal components loosen up, resulting in this unpleasant sound.
• Loss of Power: Crankshaft failure can lead to a significant loss of power in your Range Rover. You may notice a decrease in acceleration and overall performance while driving.
• Engine Stalling: Another frustrating symptom of crankshaft failure is frequent engine stalling. If your vehicle suddenly shuts off while driving or idling, it’s time to inspect the crankshaft.

List of possible OBD codes

When diagnosing crankshaft failure in your Range Rover, certain OBD codes may assist in pinpointing the issue.

Keep an eye out for the following codes:

• P1336: Crankshaft Position Sensor Circuit Range/Performance
• P0315: Crankshaft Position Sensor A Circuit Malfunction (Bank 1)
• P1337: Crankshaft Position Sensor A Circuit Range/Performance (Bank 1)
• P1338: Crankshaft Position Sensor A Circuit Low Input (Bank 1)
• P1339: Crankshaft Position Sensor A Circuit High Input (Bank 1)

These codes can provide valuable insights into the exact nature of the problem, helping you to resolve it effectively.

Common causes

Now, let’s dive into the various causes behind crankshaft failure in Range Rovers.

Understanding these causes can assist in preventing future occurrences or addressing the issue promptly. Here are some common culprits:

• Lack of Lubrication: Inadequate lubrication of the crankshaft can lead to excessive friction, causing accelerated wear and eventual failure.
• Improper Maintenance: Neglecting regular oil changes and failing to adhere to the manufacturer’s maintenance schedule can contribute to crankshaft failure.
• Manufacturing Defects: Unfortunately, manufacturing defects can occur, resulting in weakened crankshafts. This issue may require intervention from the manufacturer if there is a recall.
• Excessive Vibration: Vibrations caused by faulty engine mounts or imbalanced components can put undue stress on the crankshaft, leading to failure over time.

Can it be fixed without a mechanic?

While some minor issues can be fixed without professional assistance, Range Rover crankshaft failure is a complex problem that typically requires the expertise of a mechanic.

Attempting to fix it on your own without adequate knowledge and tools might exacerbate the situation.

Parts you’ll need to fix it

To address the crankshaft failure in your Range Rover, you’ll need the following parts:

• Replacement crankshaft
• Crankshaft position sensor
• Engine oil and oil filter

Tools you’ll need to fix it

To embark on the journey of fixing your Range Rover’s crankshaft failure, gather the following tools:

• Socket set
• Torque wrench
• Screwdrivers (various sizes)
• Pliers
• Pry bar
• Engine hoist (if necessary)
• Engine stand (if necessary)

How to fix it

Now, let’s get into action and restore your Range Rover’s crankshaft. Follow these steps carefully:

1. Preparation: Ensure the vehicle is parked on a stable surface and disconnect the battery.
2. Access the Engine: Remove any components obstructing access to the engine, such as the air intake system, engine covers, and radiator (if required).
3. Drain the Engine Oil: Place a drain pan underneath the engine and remove the oil drain plug to let the oil drain completely.
4. Remove the Crankshaft: Disconnect the relevant components and brackets attached to the crankshaft, utilizing the appropriate tools. Then, unbolt the crankshaft and carefully remove it from the engine block.
5. Install the New Crankshaft: Position the replacement crankshaft into the engine block, ensuring proper alignment. Secure it tightly with the specified torque settings.
6. Replace the Crankshaft Position Sensor: Install the new crankshaft position sensor in the correct location, following the manufacturer’s specifications.
7. Reassemble: Reverse the steps taken to disassemble the engine, reinstalling components, and tightening them securely.
8. Refill with Fresh Engine Oil: Pour the appropriate type and amount of engine oil into the engine, as outlined in your Range Rover’s specifications.
9. Test and Inspect: Start the engine and observe for any abnormal signs or symptoms. Listen for unusual noises and check for leaks.

Potential alternative causes

While crankshaft failure is a common issue among Range Rovers, there might be other factors contributing to similar symptoms.

Additional potential causes can include:

• Timing chain or belt failure
• Faulty fuel injectors
• Ignition system malfunctions
• Problems with the engine control module (ECM)

If you have ruled out crankshaft failure as the root cause, consider exploring these alternatives.

FAQs

Summary

Range Rover crankshaft failure is a common and frustrating issue that many owners have encountered.

From engine misfires to loss of power and stalling, the signs and symptoms are undeniable.

While some may attempt to fix it independently, seeking out the expertise of a mechanic is usually the best course of action.

By understanding the potential causes and following the appropriate steps, you can address this problem and have your Range Rover running smoothly once again.