Exhaust - Buzzing At 1800 RPM

Bulletin No.
94-041

Issue Date
NOV 28, 1994

Model
1994-95
ACCORD

Applicable To
ALL

File Under
ENGINE

Exhaust System Buzz at 1800 rpm

SYMPTOM

A buzzing noise is heard at 1800 rpm when accelerating at part throttle.

PROBABLE CAUSE

The gasket for the mid-pipe, in front of the catalytic converter, is sticking.

CORRECTIVE ACTION

Replace the gaskets (see PARTS INFORMATION) at both ends of the mid-pipe. Use new mounting hardware.

1. Remove the four bolts mounting the mid-pipe to the catalytic converter and exhaust pipe A.

NOTE:
Some models have the heated oxygen sensor mounted in the mid-pipe. Do not damage it while doing this repair.

2. Remove and discard the old gaskets.




3. Apply a coat of a nickel-based anti-seize compound (see RECOMMENDED MATERIALS) to the new exhaust gaskets.

4. Install the new gaskets.

5. Install the mid-pipe to the catalytic converter with new bolts and nuts (see PARTS INFORMATION). Use the original springs. Install the mid-pipe to exhaust pipe A with new nuts and the original springs and bolts. Torque all four nuts to 22 N-m (2.2 kg-m, 16 lb-ft).

PARTS INFORMATION

Exhaust gasket (2 required):
P/N 18229-SV4-003, H/C 4646386

Exhaust flange bolt (2 required):
P/N 18231-SP0-000, H/C 3820719

Self-locking nut (4 required):
P/N 90115-659-003, H/C 0599480

RECOMMENDED MATERIALS

Locktite Nickel Anti-Seize Lubricant 771 or 3M Brake Lube (3M P/N 08945)

WARRANTY CLAIM INFORMATION

In warranty: The normal warranty applies.

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

Operation number: 311102
Flat rate time: 0.6 hour
Failed part: P/N 18229-SV4-003
H/C 4646386
Defect code: 042
Contention code: B07