Exhaust System - 2,000 RPM Droning Noise in Cold Weather

04-027

October 22, 2004

Applies To:
2004 MDX - ALL

Exhaust System Droning at 2,000 rpm During Cold Weather

SYMPTOM

During cold weather, droning is heard from the exhaust system while driving with the engine at about 2,000 rpm.

PROBABLE CAUSE

In cold temperatures, the rubber exhaust mount transmits normal exhaust system resonance into the cabin.

CORRECTIVE ACTION

Replace the rubber exhaust mount.

PARTS INFORMATION

Rubber Exhaust Mount: P/N 18215-S3V-A12

WARRANTY CLAIM INFORMATION

In warranty: The normal warranty applies.

Operation Number: 311150

Flat Rate Time: 0.3 hour

Failed Part: P/N 18215-S5D-A01

Defect Code: 01801

Symptom Code: 04201

Template ID: 04-027A

Skill Level: Repair Technician

Out of warranty:
Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.

REPAIR PROCEDURE





1. Raise the vehicle, and replace the rubber exhaust mount that supports the center of the exhaust system.

2. Test-drive the vehicle with the engine at about 2,000 rpm, and listen for droning from the exhaust system:

^ If no droning is heard, or the droning is significantly reduced, the repair is complete. A slight droning in cold weather is considered a normal trait. Return the vehicle to the customer.

^ If the original droning is still present, proceed with normal troubleshooting.





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