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TSB 07-08 Explorer/ Mountaineer squeal on cold start up

CmdrPopNFresh

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City, State
Salt Lake City, Utah
Year, Model & Trim Level
'93 Sport
TSB
09-9-7 COLD START FEAD HOOT - WHISTLE NOISE

Publication Date: May 1, 2009

FORD: 2007-2008 Mustang, Expedition, Explorer Sport Trac, Explorer, F-150, F-150
LINCOLN: 2007-2008 Mark LT, Navigator
MERCURY: 2007-2008 Mountaineer


This article supersedes TSB 8-4-2 to remove the production build date.

ISSUE:
Some 2007-2008 F-150, Mustang vehicles equipped with a 4.6L and 5.4L engine; 2007-2008 Mark LT, Expedition, Navigator vehicles equipped with a 5.4L engine; Explorer, Mountaineer, Explorer Sport Trac vehicles with 4.6L engine may exhibit a front end accessory drive (FEAD) related high-pitched metallic whistle/hoot noise after a cold soak in ambient temperatures below 40 °F (4.4 °C). This noise may be caused by the grooved nylon FEAD idler pulley.

ACTION:
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

NOTE: FEAD IDLER PULLEY NOISE MAY BE MOST APPARENT AT OR NEAR COLD ENGINE IDLE SPEEDS (APPROXIMATELY 1200 RPM). NOISE DURATION IS LESS THAN 10 MINUTES AFTER STARTUP AND WILL BE ELIMINATED WITH FEAD BELT REMOVED.



Replace the nylon FEAD idler pulley, refer to Workshop Manual, Section 303-05.

PART NUMBER PART NAME
6L3Z-6C348-A Idler Pulley


WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME
090907A 2007-2008 F-150/Mark LT 4.6L/5.4L: Replace FEAD Idler Pulley Includes Time To Remove And Install Serpentine Belt (Do Not Use With 8678A, 8620F) 0.3 Hr.
090907A 2007-2008 Expedition/Navigator: Replace FEAD Idler Pulley Includes Time To Remove And Install Serpentine Belt (Do Not Use With 8678A, 8620F) 0.4 Hr.
090907A 2007-2008 Explorer/Mountaineer/ Sport Trac 4.6L: Replace FEAD Idler Pulley Includes Time To Remove And Install Serpentine Belt (Do Not Use With 8678A, 8620F) 0.4 Hr.
090907A 2007-2008 Mustang 4.6L: Replace FEAD Idler Pulley Includes Time To Remove And Install Serpentine Belt (Do Not Use With 8678A, 8620F) 0.3 Hr.

DEALER CODING
BASIC PART NO. CONDITION CODE
6c348 42
 


















Thanks sooo much for posting this. My 08 Eddie squeals like a hungry pig when I start it up and its so embarrassing.
 






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