A/C - Underhood - Buzz or Flutter Noise

Article No.
03-5-2

03/17/03

NOISE - "BUZZ" OR "FLUTTER" NOISE FROM
INSTRUMENT PANEL/UNDERHOOD AREA DURING
COLD WEATHER, LIGHT LOAD AND THROTTLE TIP
IN-VEHICLES EQUIPPED WITH 4.0L SOHC ENGINE
ONLY

FORD:
2002-2003 EXPLORER

MERCURY:
2002-2003 MOUNTAINEER

ISSUE
Some vehicles equipped with a 4.0L SOHC engine may exhibit a Buzz/Flutter sound from the right side of the Instrument Panel/Underhood Engine Compartment area. This noise may be heard under cold weather conditions when the engine is under a light load or throttle tip in. The noise involves the air intake housing interfering with the A/C lines routed under the rear corner of the housing. The housing is located at the right hand forward section of the engine compartment.

ACTION
The A/C lines must be isolated from contacting the air intake housing. Use 3 mm thick urethane tape, Rotunda Part 164-R4902 or equivalent, as found in the dealer squeak and rattle special tool kit, Part Number 164-R9400 to isolate the lines from contacting the air intake housing. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

Refer to Section 303-12: Intake Air Distribution and Filtering - Removal and Installation.





1. Remove air intake housing (Figure 1).

2. Install tape to insulate (Figure 1).

NOTE
ISOLATION PAD LOCATION ON AIR INTAKE HOUSING MAY VARY DEPENDING ON A/C LINE ROUTING.

3. Reinstall air intake housing.

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

OPERATION DESCRIPTION TIME

030502A Install Urethane Tape On 0.5 Hr.
Air Intake Housing
(Includes Time To Test
Drive)

DEALER CODING
CONDITION
BASIC PART NO. CODE
19D850 07

OASIS CODES: 107000, 504000, 702000, 702100, 702300, 703000





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