Grand Marquis V8-281 4.6L SOHC (1992)
Electronic Noise Suppressor: All Technical Service Bulletins
Premium Sound Radio - Alternator Whine
Article No.
93-12-8
06/09/93
RADIO - ALTERNATOR "WHINE" HEARD DURING AM/FM/TAPE MODE - VEHICLES WITH PREMIUM SOUND SYSTEM BUILT BEFORE
5/1/91
FORD:
1992 CROWN VICTORIA
LINCOLN-MERCURY:
1992 GRAND MARQUIS
ISSUE:
An alternator "whine" noise may be heard during the AM/FM/Tape playing mode. This condition is most noticeable in the cassette tape mode. It occurs
because audio noise suppression components were not incorporated in the Premium Sound System.
ACTION:
Determine if the alternator "whine" condition exists and, if necessary, install an Audio Service Kit. Refer to the following procedure for service details.
Audio Service Kit -18887- contains the following components.
^
One (1) purple/light blue jumper wire assembly
^
One (1) red jumper wire assembly
^
One (1) connector
^
One (1) spacer
^
One (1) instruction sheet
1.
Turn the radio ON with the engine running.
2.
Insert a blank cassette tape in the tape player.
3.
Listen for alternator "whine" through the speakers.
NOTE:
THE PITCH OF THE "WHINE" WILL VARY WITH ENGINE RPM.
4.
Verify the condition.
a.
Turn the engine OFF.
b.
Turn the key ON.
c.
Listen to tape. The alternator "whine" should be gone.
5.
If the alternator "whine" is confirmed, install an Audio Service Kit (-18887-). Refer to the Instruction Sheet included in the kit for installation
details.
PART NUMBER
PART NAME
CLASS
F2AZ-18887-A
Audio Service Kit
B
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS:
Eligible Under Bumper To Bumper Warranty Coverage
OPERATION DESCRIPTION
TIME