Mark VII V8-302 5.0L HO (1986)
^
Verify service fix.
b.
Anti-Theft System AM Interference on Weak Stations:
^
Engine not running.
^
Tune in a weak AM radio station.
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Listen for a constant "buzz" that ceases when a door is opened.
SERVICE ACTION:
Perform the following checks to service noise cause.
1.
Inspect the antenna cable connections for signs of damage or corrosion.
2.
If the antenna connector is corroded, replace the antenna.
3.
Check for possible water leaks or holes where water can enter from road splash. If found, seal holes where water entry is found.
4.
Fill the antenna female connector with grease (F2AZ-19584-A).
5.
Install the one piece, double shielded antenna cable (F1VY-18812-A). Route the cable down the right hand side of the vehicle from the radio to
the antenna, beneath the carpeting.
NOTE:
DO NOT BUNDLE EXCESS CABLE LENGTH IN TIGHT BUNDLES AS THIS COULD DAMAGE THE CABLE AND ADVERSELY AFFECT
RECEPTION PERFORMANCE. INSTEAD, SECURE CABLE AS NEEDED TO PREVENT RATTLES AND/OR DAMAGE WHEN INSTALLING
TRIM.
6.
Apply grease (F2AZ-19584-A) to the outside of the installed antenna cable connector at the antenna. This will prevent water entry into the antenna
cable connector shell.
Poor FM Reception
I.
Poor FM Reception
1.
Fuel Pump Motor
2.
JBL Amplifier
3.
Heated Windshield - Refer to TSB 91-16-9
Perform the following to verify the concern.
1.
Fuel Pump Motor FM Interference:
^
Engine not running.
^
Tune in a weak FM radio station. It is best to listen for "whining/buzzing" noise during quiet passages of classical music or listen for static or
noise when the fuel pump is running.
2.
JBL Amplifier FM Interference:
^
Engine not running.
^
Tune in a weak FM radio station. It is best to listen for interference during quiet passages of classical music.
^
Listen for static or noise.
^
Plug in a High Level Amplifier (Base Part No. 18T805 or 18T806).
^
The level of static or noise should be reduced.
