Navajo 2WD V6-4.0L OHV (1992)
Technical Service Bulletin # 0999103
Date: 030110
Audio System - Whining/Buzzing Noise From Radio Speakers
Bulletin No: 09-001/03
Last Issued: 01/10/2003
Subject
WHINING/BUZZING NOISE FROM RADIO SPEAKERS
BULLETIN NOTE
This bulletin supersedes 09-15/O1, issued 12/21/01. The APPLICABLE MODEL(S)/VINS and PART(S) INFORMATION have been changed.
APPLICABLE MODEL(S)/VINS
All 1991-94 Navajo
All 1994-02 B-Series (excludes all Flexible Fuel (FFV) B-3000).
2001-2002 Tribute
DESCRIPTION
A whining or buzzing noise can be heard coming from the audio system speakers. This may be caused by an electrical noise coming from the in-tank fuel
pump or its ground wire. A Radio Frequency Filter (RFI) is available to correct this concern. Customers having this concern should have their vehicle
repaired using the following procedure.
Note:
^
Do not perform the following procedure on FFV B-3000 vehicles, this procedure does not apply To verify if vehicle is FFV, check 8th digit of
VIN.
-
If 8th digit is V then vehicle is FFV.
-
If 8th digit is U then vehicle is not FFV.
^
Fuel pump audio noise is relatively constant and changes only slightly with engine RPMs. If the audio noise constantly changes with the engine
RPMs, the fuel pump is not the cause of the problem and the RFI filter will not effectively reduce the noise.
Customers having this concern should have their vehicle repaired using the following procedure.
PART(S) INFORMATION
WARRANTY INFORMATION
