A/C - Whistling Noise When Driving With A/C OFF

Article No.
99-12-8

06/14/99

^ AIR CONDITIONING - "WHISTLING" NOISE HEARD
WHILE DRIVING WITH A/C OFF AT SPEEDS
ABOVE 64 KM/H (40 MPH)

^ NOISE - "WHISTLING" HEARD WHILE DRIVING
WITH A/C OFF AT SPEEDS ABOVE 64 KM/H (40
MPH)

LIGHT TRUCK:
1997-1999 EXPEDITION, F-150, F-250 LD
1998-1999 NAVIGATOR

ISSUE
A whistling" noise may be heard while driving with A/C in the Off position at speeds above 64 km/h (40 mph) on some vehicles. This may be caused by an air leak at an Instrument Panel (IP) grommet.

ACTION
Seal the IP grommet with Butyl Sealer. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

1. Verify concern.





2. Loosen IP and position away to access IP grommet (Figure 1). Refer to appropriate Workshop or Service Manual for details (IP can be loosened and positioned back slightly; it does not have to be fully removed).

3. Install a small amount of Butyl Sealer (F8AZ-19554-CA) in IP grommet (Figure 1). Use enough sealer to seal gap with P installed.

4. Reinstall IP.

5. Verify repair.

PART NUMBER PART NAME

F8AZ-19554-CA Butyl Sealer

OTHER APPLICABLE ARTICLES: NONE

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME

991208A Seal Instrument Panel 3.3 Hrs.
Grommet
(F-Series/Expedition)

991208B Seal Instrument Panel 4.5 Hrs.
Grommet (Navigator)

DEALER CODING
CONDITION
BASIC PART NO. CODE
78044H32 07

OASIS CODES: 208000, 208999, 701000, 702300