Comprehensive Noise/Vibration/Harshness Procedure: Overview

Article No.
99-11-1

06/14/99

^ NOISE - TSB SPECIAL FOR
NOISE/VIBRATION/HARSHNESS

^ VIBRATION - TSB SPECIAL FOR
NOISE/VIBRATION/HARSHNESS

FORD:
1995-1997 PROBE, THUNDERBIRD
1995-1999 CONTOUR, CROWN VICTORIA, ESCORT, MUSTANG, TAURUS

LINCOLN-MERCURY:
1995-1997 COUGAR
1995-1998 MARK VIII
1995-1999 CONTINENTAL, GRAND MARQUIS, MYSTIQUE, SABLE, TOWN CAR, TRACER
1999 COUGAR
2000 LS

LIGHT TRUCK:
1995-1997 F SUPER DUTY, F-250 HD, F-350
1995-1999 ECONOLINE, EXPLORER, F-150, F-250 LD, RANGER, VILLAGER, WINDSTAR
1997-1999 EXPEDITION, MOUNTAINEER
1998-1999 NAVIGATOR
1999 SUPER DUTY F SERIES

ISSUE
This TSB article is being published as a comprehensive Noise, Vibration and Harshness (NVH) diagnostic procedure. This procedure will also be in 2000 model year and future Workshop Manuals in the NVH Section.

ACTION
Utilize the flowchart diagrams to work a problem from SYMPTOM to SYSTEM to COMPONENT to CAUSE. The tools and techniques section is expanded to include ALL NVH diagnostic "tools". There are expanded SYMPTOM CHARTS to assist with problem resolution. A revised NVH course is available through regional training centers. The course is "NVH Principals and Diagnostics", course code # 30s03t0. This course utilizes the same techniques that are in the revised diagnostic procedure.

Refer to the Noise, Vibration and Harshness Work Shop Manual Section that is included.

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 497000, 597997, 701000, 702000, 703000

SECTION 100-04
Noise, Vibration and Harshness
VEHICLE APPLICATION: Noise, Vibration and Harshness

CONTENTS

DESCRIPTION AND OPERATION

Noise, Vibration and Harshness (NVH)
Acceptable Noise, Vibration and Harshness
Diagnostic Theory
Diagnostic Process
Glossary of Terms
Tools and Techniques

DIAGNOSIS AND TESTING

Noise, Vibration and Harshness (NVH)
Component Tests
Diagnostic Process
1: Customer Interview
2: Pre-Drive Check
3: Preparing for the Road Test
4: Verify the Customer Concern
5: Road Test
6: Check OASIS/TSBs/Repair History
7: Diagnostic Procedure
NVH Condition and Symptom Categories
Pinpoint Tests
Symptom Charts

GENERAL PROCEDURES

Exhaust System Neutralizing
Powertrain/Drivetrain Mount Neutralizing
Wheel Bearing Check