4WD - Noisy Or Engaged Front Hubs In 2WD Mode - 2004-2014 Ford F-150 & 2006-2008 Lincoln Mark LT

“This site contains affiliate links for which OEMDTC may be compensated”

	4WD – NOISY OR ENGAGED FRONT HUBS IN 2WD MODE – INTEGRATED WHEEL END (IWE) VACUUM HOSE REPAIR KIT
Publication Date: August 16, 2016

FORD:	2004-2014 F-150
LINCOLN:	2006-2008 Mark LT

ISSUE:

Some 2004-2014 F-150 and 2006-2008 Mark LT vehicles equipped with four-wheel drive (4WD) may exhibit noisy or engaged front hubs when operating in two-wheel drive (2WD) mode.

ACTION:

Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

Disconnect the IWE vacuum hose from the top (outlet) port of the IWE solenoid. For solenoid location, refer to Wiring Diagram (WD), cell 151.

Connect a hand vacuum pump to the IWE vacuum hose and apply 381 mm-Hg (15 in-Hg) of vacuum. Will the IWE system hold 381 mm-Hg (15 in-Hg) of vacuum for 1 minute?
1. Yes – this article does not apply. Refer to Workshop Manual (WSM), Section 308-07 for normal diagnosis.
1. No – proceed to Step 3.

Inspect the IWE vacuum hose from inside the wheel well on each side of the vehicle for visible damage. Does either side have damage causing a vacuum leak?
1. Yes – proceed to Step 4.
1. No – this article does not apply. Refer to WSM, Section 308-07 for normal diagnosis.

Install the IWE vacuum hose service kit on both sides. Refer to the instruction sheet included in the parts kit.

PART NUMBER	PART NAME
FL3Z-3C125-C	IWE Vacuum Hose Service Kit

OPERATION	DESCRIPTION	TIME
160108A	2004-2014 F-150 4WD, 2006-2008 Mark LT 4WD: Diagnose And Install The IWE Vacuum Hose Service Kit (Do Not Use With Any Other Labor Operations)	0.5 Hr.

WARRANTY STATUS

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage.
Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.