Parisienne V6-231 3.8L (1983)
Ignition Rotor: Customer Interest
Radio - Ignition Noise
Number 84-9-10
Date 7/84
Subject:
ROAD IGNITION NOISE WITH WINDSHIELD ANTENNA - 1983-84 PARISIENNE
The following procedure is recommended when servicing 1983-84 Parisienne models equipped with a windshield antenna experiencing ignition
generated noise interference on the radio's AM and/or FM frequency band:
A.
Perform the ignition-related radio noise diagnosis outlined in Section 9 of the Service Manual with specific attention to:
1.
Inspect and replace any spark plug wire if there is evidence of wear through and/or arcing.
2.
Inspect both the distributor's cap and rotor and replace either if there are cracks or evidence of carbon tracking.
3.
Clean both the inside of the distributor cap and the rotor if either shows signs of grease contamination.
4.
Inspect both the engine compartment and instrument panel wiring for proper ground ring terminal attachments. Insure grounding screw(s) are
B.
If the ignition noise condition persists after performing the above steps, ground the instrument panel pad's metal insert to the vehicle's body (see illustration) as follows:
1.
Fabricate a ground strap assembly using Part Number 2977489 or equivalent ring terminal and approximately 3 inches of #11 gauge copper strap.
2.
Crimp the ring terminal onto one (1) strap end and tin the opposite with solder.
3.
Remove the instrument panel pad as outlined in Section 8C of the Service Manual.
4.
Remove approximately one (1) square inch of foam flash from the under side of the pad's forward most down flange; centerline between the defroster duct openings.
5.
Clean the exposed area of the pad's metal insert with "00" steel wool or crocus cloth and tin with solder.
CAUTION: Overheating the insert could result in damage to the pad's vinyl.
6.
Orient the ground strap as shown in the illustration and solder the strap's tinned end to the prepared surface area of the pad's metal insert. Note the caution on overheating.
7.
Locate and drill a 1/8" diameter hole in the metal pinch weld flange below the windshield; centerline of vehicle and equidistant between the defroster ducts.
8.
Clean the area around the drilled hole with crocus cloth to remove any body primer paint.
