Mountaineer AWD V6-4.0L VIN K Flex Fuel (2003)
Air Cleaner Housing: Customer Interest
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).