Interior - Dashboard Buzz Above 4000 rpm

Bulletin No.
94-O31

Issue Date
SEP 19, 1994

Model
1992-93
CIVIC

Applicable To
See VEHICLES
AFFECTED

File Under
ENGINE

Dashboard Buzz Above 4000 RPM

SYMPTOM
A buzzing, rattling, or knocking noise above 4000 rpm that seems to come from the dashboard or instrument cluster. This noise can sometimes be heard only inside the car. This should not be confused with lower end noise, which is more evident between idle and 1500 rpm.


PROBABLE CAUSE

The side engine mount is defective.


VEHICLES AFFECTED

All 1992-93 VX
All 1992 EX 4-door with automatic transmission
All 1993 EX and Si

DIAGNOSIS

1. Support the engine with a floor jack padded with a wooden block.

2. Disconnect the 4-P connector from the cruise control actuator.

3. Remove the cruise control actuator and set it to one side.

4. Remove the power steering reservoir and set it to one side.





5. Remove the two mounting nuts and mounting bolt. Remove the side engine mount.





6. Hold the steel case of the engine mount in one hand, and tap the rubber portion very hard with one finger.

^ If the engine mount rattles, it is defective. Go to CORRECTIVE ACTION.

^ If the engine mount does not rattle, it is not defective. Reinstall it using the steps in the CORRECTIVE ACTION procedure, then continue to diagnose the cause of the noise.

CORRECTIVE ACTION

Replace the side engine mount with the improved part listed under PARTS INFORMATION.

1. Install the new side engine mount. Install the mounting bolt, but do not tighten it. Torque the mounting nuts to 54 lb.ft. (75 N-m, 7.5 kg-m).

2. Remove the floor jack.

3. Torque the mounting bolt to 47 lb.ft. (65 N-m, 6.5 kg-m).

4. Reinstall the power steering reservoir and cruise control actuator.

PARTS INFORMATION

Side engine mount:
P/N 50820-SR3-J03, H/C 3937042

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: 112130
Flat rate time: 0.5 hour

Failed part: P/N 50820-SR3-J02
H/C 3884376

Defect code: 045

Contention code: B99