Engine - Idle Vibration or 'Click': Overview

Bulletin No.
96-005

Issue Date
Jan. 22, 1996

Model
1990-93
ACCORD

Applicable To
ALL

File Under
ENGINE

Excessive Idle Vibration or "Click" Sound

SYMPTOMS

^ Engine vibration at idle.

or

^ A single "click" or "pop" sound is heard when coming to a stop (automatic transmission only).

PROBABLE CAUSES

Idle Vibration:

^ The upper bushing in the torque rod is cracked or torn (manual or automatic transmission).

^ The vacuum-controlled rear engine mount is defective (automatic transmission only).

"Click" Sound (automatic transmission only):

^ The vacuum-controlled rear engine mount is defective.

PARTS INFORMATION

Torque rod:

For manual transmission

P/N 50830-SM4-020, H/C 3594991

For automatic transmission

P/N 50830-SM4-A81, H/C 3594983

Vacuum-actuated rear engine mount:

P/N 50810-SV4-J82, H/C 4710133

CORRECTIVE ACTION

^ Idle Vibration: Begin with Torque Rod Inspection.

^ "Click" Sound: Begin with Diagnosis B.

Torque Rod Inspection





1. Inspect the torque rod upper bushing for cracks or tears. On A/T-equipped models, remove the upper mounting bolt and rotate the torque rod away from the engine.

^ If the bushing is bad, continue to step 2 to replace the torque rod.

^ If the bushing is OK, and the vehicle has an automatic transmission, go to Diagnosis A.

^ If the bushing is OK, and the vehicle has a manual transmission, investigate other causes.





2. Remove the upper mounting bolt (if not done in step 1). Remove the lower mounting bolt. Remove the torque rod.

3. Install the new torque rod (see PARTS INFORMATION). Torque both mounting bolts to 65 N.m (47 lb-ft).

NOTE:
The upper mounting bolt should easily slide into the torque rod. If it does not, the front beam may be bent.

4. Start the engine and check for idle vibration.

^ Manual Transmission: If idle vibration is still excessive, investigate other causes.

^ Automatic Transmission: If idle vibration is still excessive, go to Diagnosis A.

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.

Failed part: P/N 50830-SM4-A81
H/C 3594983

Defect code: 042

Contention code: B07