Acura Connecting Rod Bearing Stop Sale: A Comprehensive Guide

The Importance of Connecting Rod Bearings

Connecting rod bearings play a crucial role in an engine's operation. They are responsible for reducing friction between the crankshaft and connecting rod, ensuring smooth and efficient engine performance. Without proper lubrication and maintenance, these bearings can fail, leading to catastrophic engine damage.

Overview of the Acura Connecting Rod Bearing Stop Sale

In 2021, Acura issued a stop sale order for certain 2019-2021 ILX, 2020-2022 TLX, and 2020-2021 RDX models after reports of premature connecting rod bearing failure. This stop sale order prohibited the sale or delivery of affected vehicles until the issue was resolved.

Affected Models and Year Ranges

Root Cause of the Failure

Investigations by Acura revealed that the premature bearing failure was caused by an inadequate oil supply to the bearings. This resulted from a combination of factors, including:

• Insufficient engine oil capacity
• High oil consumption
• Defective oil pump

Symptoms and Diagnosis

Common symptoms of connecting rod bearing failure include:

• Knocking or ticking noises from the engine
• Increased oil consumption
• Low oil pressure
• Engine performance issues (reduced power, rough idling)

Diagnosis of connecting rod bearing failure typically involves:

• Visual inspection of the bearings for wear or damage
• Oil analysis to detect elevated levels of metal particles
• Engine noise analysis to identify knocking sounds

Resolution and Repair

Acura has implemented several measures to resolve the connecting rod bearing issue:

• Increased engine oil capacity: The oil capacity has been increased by one quart to improve lubrication.
• Revised oil pump design: The oil pump has been redesigned to provide a more consistent oil supply to the bearings.
• Extended warranty: The warranty on connecting rod bearings has been extended to 10 years or 100,000 miles.

Affected vehicles must undergo a repair procedure that involves:

• Replacing the connecting rod bearings
• Installing a new oil pump
• Changing the engine oil and filter

Cost and Availability of Repairs

The cost of repairs for the connecting rod bearing issue varies depending on the model and extent of the damage. However, estimates range from $3,000 to $5,000.

Repairs are available at authorized Acura dealerships. Owners of affected vehicles are advised to schedule an appointment as soon as possible.

Common Mistakes to Avoid

To avoid connecting rod bearing failure, it is important to:

• Use the recommended engine oil and follow the specified oil change intervals.
• Monitor oil levels regularly and add oil as needed.
• Avoid prolonged periods of low oil pressure.
• Avoid driving the vehicle if you notice any unusual noises or performance issues.

Why Matters and Benefits

Addressing the connecting rod bearing issue is crucial because:

• Prevents catastrophic engine failure: Connecting rod bearing failure can destroy the engine and render the vehicle inoperable.
• Protects vehicle investment: Repairs for connecting rod bearing failure can be costly.
• Maintains vehicle performance: Proper lubrication ensures optimal engine performance and fuel efficiency.

Compare Pros and Cons

Pros

• Increased engine reliability: Improved lubrication reduces the risk of bearing failure.
• Extended warranty: Peace of mind knowing the bearings are covered for 10 years.
• Improved performance: Reduced friction and wear enhance engine efficiency and performance.

Cons

• Higher repair costs: If bearing failure occurs, repairs can be expensive.
• Inconvenience: Affected vehicles must be repaired at authorized dealerships, which may be inconvenient for some owners.
• Loss of value: A history of connecting rod bearing issues may affect the resale value of the vehicle.

Interesting Stories

1. The Persistent Mechanic: A mechanic was baffled by a persistent knocking sound coming from an Acura engine. After extensive testing, he finally discovered that the connecting rod bearings had failed due to an improperly installed oil filter. Lesson: Always follow manufacturer's specifications for maintenance procedures.

2. The Overzealous Driver: A driver ignored warning signals of low oil pressure and continued to drive their Acura. The result? Catastrophic engine failure and a hefty repair bill. Lesson: Don't ignore warning signs. If something sounds or feels wrong, get your vehicle checked immediately.

   

3. The Fortunate Owner: A concerned owner noticed a slight ticking noise in their Acura and took it to a dealership for diagnosis. The technicians discovered an early stage of connecting rod bearing wear and performed timely repairs, preventing a major failure. Lesson: Regular maintenance and an attentive ear can save you from costly problems.

Tables

1. Affected Acura Models

2. Common Symptoms of Connecting Rod Bearing Failure

3. Causes of Connecting Rod Bearing Failure in Acura Vehicles