Suspension - Noise Accelerating at Highway Speeds

Article No.
01-21-7

10/29/01

NOISE - "MOANING/DRONING" DURING LIGHT
ACCELERATION AT HIGHWAY SPEEDS

LINCOLN:
2000-2002 LS

This article is being republished in its entirety to update the Model Year coverage and to update the parts required.

ISSUE

Some vehicles may exhibit a "moaning/droning" noise during light accelerations with the transmission in 5th gear at highway speeds (100-130 km/h (60-65 mph) for V6 vehicles or 80-90 km/h (50-55 mph) for V8 vehicles). This noise will disappear if the transmission is shifted to 4th gear or when lifting the throttle. The noise may be due to the body reacting to a resonant frequency generated by the powertrain.

ACTION

Install revised larger diameter rear halfshafts (1W6Z-4K138-AA (RH) and 1W6Z-4K139-AA (LH). The larger diameter halfshafts should reduce the resonant frequencies generated by the powertrain. Refer to the 2000-2002 LS Workshop Manual, Section 205-05 for installation procedure.





Parts Block

OTHER APPLICABLE ARTICLES: NONE

SUPERSEDES: 00-10-5

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME

012107A Replace Halfshafts 1.5 Hrs.

DEALER CODING
CONDITION
BASIC PART NO. CODE
4K138, 4K139 42

OASIS CODES: 403000, 497000, 509000, 597997, 702000, 702200, 702300, 703000, 703200, 703300