1991 Porsche 911 technical service bulletins
92 technical service bulletins and manufacturer communications cover the 1991 Porsche 911.
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Special tools and equipment information for the Boxster, Cayman, 911, and Panamera
- Information for PIWIS tester update 42.300.050 & .052
- Instructions on manufacturers certificate for approved C20 engine oils
- Instructions on manufactures certificate for approved Porsche C30 engine oils
- Instructions on manufactures certificate for approved Porsche A40 engine oils
- Information for PIWIS tester update 42.300.040 & .041
- Information for PIWIS tester update 42.300.035
- Information for PIWIS tester update 42.300.030
- Parts information for parts withdrawal involving the glass roof
- Special tools and equipment information on PIWIS tester update 42.250.050
- Information on PIWIS tester update 42.250.045
- Information on PIWIS tester update 42.250.042
- Information PIWIS tester update 42.250.040
- Information on PIWIS tester update 42.250.032
- Information on PIWIS tester update 42.250.030
- Information on PIWIS tester update 42.200.025
- Information on PIWIS tester update 42.200.020 & .022
- Special tools and equipment information for all Porsche models
- Information on PIWIS tester update 42.200.000 – 42.200.012
- Manufacturers certificate for an overview of approved Porsche C20 engine oils.
- Manufacturers certificate for an overview of approved Porsche C30 engine oils.
- Manufacturers certificate for an overview of approved Porsche C40 engine oils.
- Manufacturers certificate for an overview of approved Porsche A40 engine oils.
- Special tools and equipment information for the Pico Oscilloscope Extended Functionality
- Parts information for parts withdrawal on the locks made to original key code
- Manufacturers certificate for allocation of approved engine oils
- Information for PIWIS tester update 42.100.000, .010 & .011
- Information for PIWIS tester updates 42.000.050 & .051
- Information for PIWIS tester update 42.000.048
- Information for PIWIS tester update 42.000.040
- Information for PIWIS tester update 42.000.035
- Special tools information on an upgrade to the pushers for the VAS5237
- Manufacturers certificate for approved engine C20 engine oils.
- Product knowledge for the Porsche evolution from 1948-2023.
- Information for PIWIS tester update 41.750.045 & .046
- Special tools information for the pneumatic cartridge gun.
- Overview of approved engine C30 oils for all Porsche models that use C30 oil.
- Overview of approved engine C40 oils for all Porsche models that use C40 oil.
- Overview of approved engine A40 oils for all Porsche models that use A40 oil.
- Instructions on advanced technical information for improper odometer and speedometer function
- The following illustrations are based on the four poster set "Evolution Porsche 1948-2006".
- Special tools information for the logo templates and exchangeable inserts.
- Information for PIWIS tester update 41.500.020 & .022
- Special tools information for the 9282 supersedes to the PNA9282NAR.
- Information for PIWIS tester update 41.400.000 & .010.
- Information for PIWIS tester update #41.375.050
- Information for PIWIS tester update #41.375.045.
- Parts information for parts withdrawal involving the fuel filler flap
- Information for PIWIS tester update #41.375.040
- Instructions on advanced technical information for the lubricant for the sunroof/sliding roof.
- Information for PIWIS tester update #41.300.000, .010 & .012
- Special tools information for new blitz table replacement castors.
- Overview of approved engine C30 oils for Porsche models using C30 oils.
- Instructions on the manufacturers certificate for approve Porsche A40 engine oils.
- Overview of approved engine C40 engine oils for all Porsche models using this oil.
- Overview of approved engine C20 engine oils for all Porsche models using this oil.
- Special tools and equipment for the VAG 1561 storage kit in foam with blades
- Advanced technical information for a brake squeal.
- Parts information for parts withdrawal involving the valve spring
- Special tools information for a new contact surface cleaning set.
- List of approved engine oils for all Porsche models using C40 oil.
- Information on new PIWIS Tester program for independent repair facilities.
- Information on how to deal with a potential cyber security breach.
- Historical information on Porsche product evolution.
- List of approved C20 style engine oils for classic and new Porsche models since 1984.
- Information on PIWIS Tester update 40.000.020 & .022.
- List of approved C20 engine oils for all new and classic Porsche models 1984 and newer.
- List of approved C30 engine oils for all new and Classic Porsche vehicles MY1984 and newer.
- List of approved C40 engine oils for new and classic Porsche vehicles MY 1984 and newer.
- List of approved A40 style engine oils for new and classic Porsche vehicles MY 1984 and newer.
- List of approved C40 style engine oils for new and classic Porsche vehicles.
- List of approved A40 style engine oils for new and classic Porsche models.
- Advanced Technical information on a NVH Lubrication kit.
- Information on new PIWIS tester update 39.500.020 and .025.
- Info on a new customer tool for looking up campaigns and recalls on their vehicle.
- Document showing the evolution of Porsche Vehicles since 1948.
- Bulletin outlining new blitz table replacement castors due to a high rate of failure reported by dealers.
- List of approved C20 engine oils for all Porsche vehicles since 1984.
- Announcement of new Tech Live look, which will put technicians into live chats with technical support if...
- Bulletin highlighting new updates 38.750, 38.750.000 for the Porsche PIWIS Tester 3
- Bulletin outlining PIWIS Tester updates 38.600.030 & 035.
- Bulletin outlining PIWIS Tester updates 38.600.020.
- Bulletin outlining PIWIS Tester updates 38.600.000, .010, & .015.
- Announcement of a 6 month warranty extension on VAS 581005P R1234yf Service Units for air conditioning.
- Instructions for using VAS 581005P in order to chech and service R1234yf Air Conditioning Unit.
- Subject: Replacing brake booster during repairs Information: If the brake booster on the 911 Carrera...
- Information: Old airbag sensor no longer available
- Understanding and addressing brake squeal complaints.
- Porsche: information on how to read the VIN
- Exchange engines and transmissions for warranty
- The front transmission case cover and spur gears are no longer available as separate parts
- Brake vibration damper application - new damping plate with steel clip
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