Audio System - Poor AM Band Reception/Popping/Static

Group:
ELECTRICAL

Number:
031

Date:
AUGUST, 1988

Model:
EXCEL

Subject
POOR AM RECEPTION

Condition:
Poor AM reception, popping/static

Cause:
Poor grounding of antenna due to one or more of the following conditions:

A. Poor grounding of antenna mast support bracket to inner fender due to contamination of the ground by factory applied anti-corrosion material.

B. No continuity between antenna cable center pin and antenna mast threaded socket.

(Wiggle cable while checking continuity to verify that contact is intermittent.)

C. No continuity between antenna cable ground conductor and antenna mast support bracket.

Correction:





For Condition A:
Remove antenna cable assembly with support bracket from vehicle and clean all anti-corrosion material off assembly. Clean all anti-corrosion material off inner fender in the area of the antenna support brackets lower mounting attachment hole. To ensure continual grounding it is recommended that a small star washer be placed between the inner fender and antenna bracket.

For Condition B:
Replace antenna cable assembly.

For Condition C:
Replace antenna cable assembly.