Fulltext TSBs

Technical Service Bulletins

TSB
02-10-8
  • DRIVEABILITY – 5.4L 2V – IDLE-AIR BYPASS FLOW INDUCED WHISTLE
  • ENGINE – 5.4L 2V – IDLE-AIR BYPASS FLOW INDUCED WHISTLE
  • NOISE – IDLE-AIR BYPASS FLOW INDUCED WHISTLE – VEHICLES EQUIPPED WITH 5.4L 2V ENGINE ONLY
Publication Date: MAY 20, 2002

FORD:
1999-2002 E SERIES, EXPEDITION, F-150, SUPER DUTY F SERIES

ISSUE:

Some vehicles equipped with the 5.4L 2V engine may exhibit a “whistling” noise from the formed nylon tube in the idle-air bypass flow circuit. This may be caused by air flow passing through the sharp bend radius of the original tube assembly.

ACTION:

Remove and replace formed nylon tube with the Nipple And Hose Assembly 2L1Z-9W548-AA. This action will correct the sharp bend in the tube. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

  1. Remove the formed tube as shown (Figure 1).
  2. Replace with Nipple And Hose Assembly with part 2L1Z-9W548-AA.
  3. Connect nipple to the air-inlet zip tube and the free end connects to resonator as shown (Figure 2).
  4. Ensure that there are no kinks in the rubber hose which could restrict air flow.

    LABOR OPERATION CLAIMING CHART
    OperationLabor DescriptionVehicleTime
    021008AReplace Formed Nylon Tube With Nipple And Hose AssemblyF-150, Super Duty F Series, Expedition

    E-Series
    0.2


    0.4



PART NUMBERPART NAME
2L1Z-9W548-AANipple And Hose Assembly

OTHER APPLICABLE ARTICLES:

NONE

WARRANTY STATUS:

Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage

DEALER CODING

BASIC PART NO.CONDITION CODE
9H308V3

OASIS CODES:

497000, 702000, 702100




Figure 1 – Article 02-10-8




Figure 2 – Article 02-10-8


Copyright © 2002 Ford Motor Company