928 S4 V8-4957cc 5.0L (1987)
Technical Service Bulletin # 28901
Date: 890710
Recall - Replacement of Converter Heat Shield
Group
2
Number
8901
Model
1985/86 928S 1987 928 S4
Campaign Code:
K01
July 10, 1989
Subject:
Replacement of Heat Shield for Catalytic Converter
General Information
This is to notify you of a voluntary Recall Campaign involving 6905 Porsche 928S and 928 S4 Model Years 1985 to 1987, within the following VIN
ranges:
1985 Model 928S
- from WP0JB092_FS860061 to WP0JBD92_FS862279
1986 Model 928S
- from WP0JB092_GS860061 to WP0JBD92_GS863010
1987 Model 928 S4
- from WP0JB092_HS860061 to WP0JBO92_HS862481
It was determined that the heat shield above the catalytic converter is inadequate under certain circumstances involving engine malfunction. The problem
arises where, due to, among other reasons, improper maintenance or repair, such as improperly secured ignition wires, the engine misfires resulting in
overheating of the catalytic converter. If this condition is not detected, materials in the vicinity of the catalytic converter including the lines for the
automatic transmission fluid could ignite and cause an underbody fire due to insufficiency of the heat shield.
Customer Notification
Porsche Cars North America will notify all known owners of vehicles within the Recall VIN ranges directly by first class mail during the week of July
24, 1989, or as soon as sufficient quantity of parts are at the dealerships. See the copy of customer notification letter that is included. A listing of all
vehicles in your area will be sent to you shortly.
Parts Requirement
Parts required to perform this Recall will be shipped to you shortly. An automatic allocation will be shipped to you based on 70% of the vehicles in your
area. Additional parts and kits, after the allocation, should be ordered as needed through normal parts channels using the part number or where
applicable, the kit number.
The parts required to perform each Recall are, for:
Time Allowance
