Explorer 4WD V8-4.6L VIN W (2002)
Drive/Propeller Shaft: All Technical Service Bulletins
Driveline - Vibration/Boom Between 55 and 75 MPH
TSB 05-16-4
08/22/05
DRIVELINE 1ST ORDER VIBRATION/BOOM/DRONE
FORD:
2002-2005 Explorer
LINCOLN:
2003-2005 Aviator
MERCURY:
2002-2005 Mountaineer
This article supersedes TSB 05-3-7 to update the service procedure and to add a vehicle line.
ISSUE
Some 2002-2005 4x4 Explorer 4dr/Mountaineer and 2003-2005 4x4 Aviator vehicles may exhibit a vibration/drone/boom at 55-75 MPH (89-121 km/h).
Electronic vibration analyzer (EVA) readings will fall under 1st order rear driveshaft at 2700-3100 shaft RPM (45-52 Hertz).
ACTION
If the condition is present in 3rd gear (with overdrive cancelled), and is isolated to the driveline (not felt through the steering wheel), install a premium
balanced driveshaft. Refer to the following Service Procedure.
SERVICE PROCEDURE
NOTE
THIS TSB DOES NOT APPLY TO THE SOLID 4X2 DRIVESHAFT, IT ONLY APPLIES TO 4X4 WITH BOOT/SLIP JOINT IN THE MIDDLE
OF THE DRIVESHAFT.
1.
With the vehicle in NEUTRAL, position it on a hoist. Refer to Workshop Manual Section 100-02.
2.
Remove skid plate, if equipped.
3.
Remove the driveshaft flange bolts (Figure 1).