Fulltext TSBs

Technical Service Bulletins

TSB
98-20-10
  • EXHAUST SYSTEM – LOOSE CATALYST OR MUFFLER HEAT SHIELDS
  • NOISE – “BUZZING” OR “RATTLING” – LOOSE CATALYST OR MUFFLER HEAT SHIELDS
Publication Date: SEPTEMBER 29, 1998

FORD:
1993 FESTIVA
1993-1994 TEMPO
1993-1997 PROBE, THUNDERBIRD
1993-1999 CROWN VICTORIA, ESCORT, MUSTANG, TAURUS
1994-1997 ASPIRE
1995-1999 CONTOUR
LINCOLN-MERCURY:
1993-1994 CAPRI, TOPAZ
1993-1999 CONTINENTAL, COUGAR, GRAND MARQUIS, SABLE, TOWN CAR, TRACER
1995-1999 MYSTIQUE
LIGHT TRUCK:
1993-1996 BRONCO
1993-1997 F SUPER DUTY, F-350
1993-1999 AEROSTAR, ECONOLINE, EXPLORER, F-150, F-250 LD, RANGER
1995-1999 WINDSTAR
1997-1999 EXPEDITION, MOUNTAINEER, VILLAGER
1998-1999 NAVIGATOR
1999 F-250 HD, SUPER DUTY F SERIES

This TSB article is being republished in its entirety to include additional vehicles and to include 1999 model year vehicles.

ISSUE:

A “buzzing” or “rattling” noise from the exhaust system may be caused by a loose heat shield attachment to the catalytic converter, catalytic pipes, muffler pipes and/or muffler. The noise is noticeable during normal driving conditions or at engine idle.

ACTION:

Install worm clamps to secure loose heat shield attachments. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

  1. Inspect for loose shields. If shield(s) is missing, this TSB does not apply. Refer to the appropriate Service or Workshop Manual for repair procedures.

    NOTE:UNDER NO CIRCUMSTANCES SHOULD A HEAT SHIELD BE REMOVED WITHOUT REPLACEMENT BEFORE THE VEHICLE IS RETURNED TO THE CUSTOMER.

  2. Install worm clamps to the catalytic converter, catalytic pipes, muffler pipes or muffler as shown in Figure 1 for the typical light truck and Figure 2 for the typical passenger car.


    Figure 1 – Article 98-20-10




    Figure 2 – Article 98-20-10

  3. Align the clamps to secure the heat shield to the catalytic converter, catalytic pipes, muffler pipes or muffler as required.
  4. Tighten the clamps to 6.8 N-m (60 lb-in).
  5. Trim the excess “ear” of the clamp to approximately 2.54 cm (1″).

PART NUMBERPART NAME
FOTZ-5A231-AWorm Clamp (4-1/2″ To 9-1/2″)
W705949-S300Worm Clamp (3/4″ To 4″)

OTHER APPLICABLE ARTICLES:

NONE

SUPERSEDES:

98-6-4

WARRANTY STATUS:

Eligible Under Basic Warranty Coverage For 1991 And Prior Models, Bumper To Bumper Warranty Coverage For 1992-99 Models, And Any Applicable Emissions Warranty Coverage

OPERATIONDESCRIPTIONTIME
982010AInstall One (1), Two (2), Or Four (4) Worm Clamps0.3 Hr.

DEALER CODING

BASIC PART NO.CONDITION CODE
5E25833

OASIS CODES:

403000, 702000, 702100, 702200, 703000