Drivetrain - Vibration/Shimmy Above 45 MPH: Overview

Article No.
99-15-7

07/26/99

^ BODY BOOM - SPEEDS OVER 72 KM/H (45 MPH) -
DIAGNOSTIC PROCEDURE

^ SHIMMY - SPEEDS OVER 72 KM/H (45 MPH) -
DIAGNOSTIC PROCEDURE

^ VIBRATION - SPEEDS OVER 72 KM/H (45 MPH) -
DIAGNOSTIC PROCEDURE

FORD:
1997-1999 EXPEDITION

LINCOLN:
1998-1999 NAVIGATOR

ISSUE
A vibration at speeds above 72 km/h (45 mph) may occur on some vehicles. This may be caused by an imbalance in one or more of the driveline components resulting in a resonance that produces a vibration in the seat or steering column.

ACTION
Refer to the following Drive Diagnostic Procedure and System Balancing Procedure. Follow the initial drive diagnostic and note any changes after each drive.

PART NUMBER PART NAME

XL1Z-4602-AB Driveshaft
XL1Z-4802-AA Driveshaft
F85Z-5E269-EA Exhaust Pipe Bracket
XL1Z-4602-BA Driveshaft
F85Z-4B473-AA Damper Assembly

OTHER APPLICABLE ARTICLES: 98-18-7, 98-5-2, 99-1-1

WARRANTY STATUS: INFORMATION ONLY

OASIS CODES: 304000, 306000, 504000, 509000, 702000, 702300, 703000, 703300