Exhaust Heat Shields - Buzzing/Rattling Noise

Bulletin No. 012/98
Issued 11/04/98
Revised 11/11/98

Category
F (01)

Applicable Model/s
1994-99 B-Series
1991-94 Navajo

Subject
BUZZING/RATTLING NOISE - LOOSE
CATALYST/MUFFLER HEAT SHIELDS

BULLETIN NOTE
This bulletin supersedes F 002/96.

APPLICABLE MODEL(S)/VINS
All 1994-99 B-Series and 1991-94 Navajo.

DESCRIPTION

A buzzing or raffling noise may be heard coming from the exhaust system during normal driving conditions or at idle. This may be caused by a loose heat shield attachment to the catalytic converter catalytic pipes, muffler pipes and/or muffler.

Customers complaining of this concern should have their vehicle repaired according to the following procedure.

Note
^ Do not replace the catalytic converter or muffler to eliminate this noise.

REPAIR PROCEDURE

1. Verify customer complaint





2. Install worm clamps to the catalytic converter, or muffler as shown.





3. Align and tighten the clamps to secure the heat shield/shields in place.

Tightening torque
6.8 Nm (60 lb-in)

4. Trim the excess "ear" of the clamp to approximately 1" (2.54 cm).

5. Verify repair.

PART(S) INFORMATION

Part Number Description Qty. Notes

ZZL0 13 458 Worm Clamp 2 or 4 ---

WARRANTY INFORMATION

Note
^ This information applies to verified customer complaints on vehicles covered under normal warranty. Refer to the SRT microfiche for warranty term information.

Warranty Type A
Symptom Code 82
Damage Code 97
Part Number Main Cause ZZL0 13 458
Quantity 2 or 4
Operation Number / Labor Hours YY0066RX / 0.4