Technical Service Bulletins
|Publication Date: MAY 20, 2002|
|1999-2002 E SERIES, EXPEDITION, F-150, SUPER DUTY F SERIES|
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.
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.
- Remove the formed tube as shown (Figure 1).
- Replace with Nipple And Hose Assembly with part 2L1Z-9W548-AA.
- Connect nipple to the air-inlet zip tube and the free end connects to resonator as shown (Figure 2).
- Ensure that there are no kinks in the rubber hose which could restrict air flow.
LABOR OPERATION CLAIMING CHART Operation Labor Description Vehicle Time 021008A Replace Formed Nylon Tube With Nipple And Hose Assembly F-150, Super Duty F Series, Expedition
|PART NUMBER||PART NAME|
|2L1Z-9W548-AA||Nipple And Hose Assembly|
OTHER APPLICABLE ARTICLES:
Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage
|BASIC PART NO.||CONDITION CODE|
497000, 702000, 702100
Figure 1 – Article 02-10-8
Figure 2 – Article 02-10-8