Idle Air Bypass Valve - Noise Or Moan

Article No.
94-22-4

10/31/94

^ IDLE AIR BYPASS VALVE - NOISE - "MOAN" - "HOOTING" - FROM ENGINE COMPARTMENT DURING NORMAL OPERATING CONDITIONS - VEHICLES WITH 4.6L ENGINES

^ NOISE - "MOAN" - "HOOTING" - FROM ENGINE COMPARTMENT DURING NORMAL DRIVING - VEHICLES WITH 4.6L ENGINES

FORD:
1992-94 CROWN VICTORIA, THUNDERBIRD

LINCOLN-MERCURY:
1992-94 COUGAR, GRAND MARQUIS, TOWN CAR

ISSUE:
Some vehicles may experience a "moaning" or "hooting" noise coming from the engine compartment while the engine is operating under normal conditions. This noise may be coming from the Idle Air Bypass Valve.

ACTION:
Install a new Idle Air Bypass Tube and Resonator Assembly. Refer to the following service procedure.

SERVICE PROCEDURE

1. Start the engine and verify the "moan" or "hooting" noise coming from the engine compartment, in the area of the Idle Air Bypass Valve and Tube Assembly.





2. Disconnect the wiring harness at the 40 pin connector and move it out of the way to allow removal of the Idle Air Bypass Valve Tube and Nipple Assembly from the air cleaner resonator. Refer to Figure 1. Discard tube and nipple assembly.





3. Install a new Tube and Resonator Assembly (F5AZ-9H308-A). Refer to Figure 2. Reconnect the wiring harness and start the engine to verify the concern has been resolved.

PART NUMBER PART NAME CLASS

F5AZ-9H308-A Idle Air Bypass Tube Assembly WC

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS:
Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage

OPERATION DESCRIPTION TIME
942204A Replace Idle Air Bypass 0.2 Hr.
Tube - Thunderbird, Cougar
942204B Replace Idle Air Bypass 0.2 Hr.
Tube - Ford, Mercury, Town Car

DEALER CODING
BASIC PART NO. CONDITION CODE
9H308 56

OASIS CODES: 497000, 612000, 702000, 702100