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
931208A Diagnose And Correct 0.8 Hr.
Problem

DEALER CODING
BASIC PART NO. CONDITION CODE
18808 56

OASIS CODES: 207000