Repair and Diagnosis: Technical Service Bulletins
- How to Find Technical Service Bulletins by Category/Symptom
- Recalls
- Customer Interest
- Superceded Bulletins
- All Technical Service Bulletins
- Vehicle - Use Only Approved Parts For Collision Repairs
- 18801 - 02/12/88
- Tools - Quick Scope Plus
- Tools - Auto Scopemeter & Engine Analyzer
- Technical Information (Advanced) - 23rd Supplement
- Overview
- 928 M.Y. 1985/86 Flywheel/Ignition Timing-Performance Problems
- 924S, 944, 944S M.Y. 1988 Crankcase Ventilation Heater
- 928 S4 M.Y. 1988 Engine Oil Level Checking System -- Modified
- 944 Engine Performance - to Determine Cause of Problem
- 928/928 S4 Ignition Trigger Control Heat Conducting Paste
- 911 Turbo M.Y. 1986 Ignition Delay Relay - Modified
- 911 Turbo M.Y. 1986 Acceleration/Enrichment Relay - Modified
- 924 Turbo M.Y. '81/'82 Ignition Control Unit - Pressure Line
- 911 Carreara M.Y. 1987 DME Control Unit Modified
- 911 Turbo M.Y. 1987 Acceleration - Enrichment Relay - Modified
- 944S, 944T M.Y. 1988 DME Control Unit: Modified
- 944S, 944T Knock Sensor - Modified
- 928 S4 M.Y. '87 - '89 Battery - Modified
- 928 S4 M.Y. '89 TDC Sending Unit - Deleted
- 911C2/4 *Reduced Engine Broking Effect
- 911 Carrera M.Y. 1984 Trans Mainshaft Bearing Loose
- 944 Transmission/Drive Train Noise
- Carrera 2/4 *Additional Shifter Boot Installed
- 911 Carrera M.Y. 1987 Rear Stabilize BAR - Modified
- 944, 944S 944T M.Y. 1988 With M-593 ABS - Modified
- 911 Carrera 911 Turbo M.Y. '88 Hand Brake Shoes - Modified
- 944, 944S, 944 S2, 944T, 928, 928S 928 S4, 928 GT P.S. Belt Tension
- 911 Carrera Door Lock/Tumbler Set - Replacements
- 928S Front Hood - Height Adjustment
- 944 Front Fender - Modified
- 944, 944T M.Y. '89 Rear Lid Modified
- 911 C 2/4 *Door Contact Switch Modified
- 911 Carrera M.Y. 1985 Electric Window Winder Relay - Relocated
- 911 Carrera M.Y. 1985 Mirror Switch and Window Heater
- 911 Cabrio M.Y. '86 - '89 Convertible Locking Motors - Modified
- 911 C2/4 *Tonneau Cover Strap Fasteners Installed
- 944, 944 Turbo M.Y. '86 Seat Back Unlocking Knob - Installation Procedure
- 944, 944T M.Y. '89 A/C High and Low Pressure Switch Modified
- 924 Turbo M.Y. 1981 Tachometer - Supersession
- 911 Carrera 911 Turbo M.Y. 1988 Luggage Compartment Wiring Harness
- 928 S4 Securing of Battery Ground Cable - Modified
- 928 S4 911/T M.Y. '88 Alarm System - Modified
- 928 S4 All 4 CYL. M.Y. 1988 Windshield Wiper Relay - Modified
- 928S/928 S4 M.Y. '86, '87, '88 Modified Rear Lid Motor
- 911 Carrera 911 Turbo 928 S4 Spare Paint Deleted
- Warranty - Engine Follow Up Service After Major Repairs
- Electrical Harnesses - Routing and Securing
- Battery - Checking Constant Current Draw
- Campaign - Replace Fuel Cooler
- VIN, Certification, & Emission Label - Availability
- Tools - Minimum Requirement Listing
- Warranty - Access Start Dates and Recall Inquiry
- Technical Information Books - Available Stock Listing
- Techincal Information Booklets - Current Availability
- Towing - Long Distance & Emergency
- Microfiche & Table of Contents for Binder - New
- Microfiche - New Issues and Table of Contents
- Workshop Manuals - Ordering Information
- Warranty - Improper Modifications to Electrical System
- Tools - New and Required for Vehicle Service
- Fuse - Location for Rear Lid Lock Motor
- Tools - Testers for Alarms, Central Warning, & Air Bag
- A/C - Revised Sealing Rings for Expansion Valves
- A/C Refrigerant - General Recovery & Recycling Tips
- A/C - Substitutes for R-12 Refrigerant
- A/C Refrigerant - Identifier
- A/C - Retrofitting R12 Systems to R134
- A/C - Refrigerant 134a Use
- Power Steering - Hydraulic Noise During Full Turns
- Steering Stop and Dust Cover - Modified
- Power Steering - New Procedures Working on Pumps/Racks
- Four Speed A/T - Overhaul
- A/T - When Installing Short Unit Adjust Pinion
- Camshaft Housing Gaskets - Modified
- Oil Pan and Suction Pipe - Recommended Replacement
- Cylinder Heads - Tightening Procedure & Service Changes
- Toothed Engine Belts - Storage, Packing and Handling
- Tools - Calibration Gauge for Special Tool 9201
- VIN Plate, Certification & Emission Label - Availability
- VIN, Certification & Emission Labels - Availability
- Cooling System - Corrosion
- Cooling System - Clean & Flush After Repairing Leak
- Tensioning Roller Carrier, Water Pump - Modification
- Thermostat Housing - Revised
- Radiator - Plugged Up
- Cooling System - Approved Phosphate Free Anti-Freeze
- Electrical System - Poor Pin/Ground Lug Connections
- Power Steering Pump - Flush Hoses After Replacing
- Brake Pad - Installation Hardware Ordered Separately
- Brake Pads - Available Without Asbestos
- Spark Plugs - Install With Threads Clean and Dry
- Spark Plugs - Revised Plugs and Tightening Torque
- Tools - Compressor Seal Replacement
- A/C Evaporator - Replacement Procedure
- Power Steering Gear - Diagnosis
- Camshaft Drive Belt - Adjustments
- Cylinder Heads - Machining and Using Correct Gaskets
- Cylinder Head Bolts - Revised Torque & Sequence
- Coolant Pump - Leaks
- Lower Ball Joint - Modified Support and Mounting
- Wheels - Unapproved Installation of 18 Inch Wheels
- Tires/Wheels - Summer Recommendations
- Tires/Wheels - Summer Tire and Wheel Rim Summary
- Tools - Special Wheel Balancing Adapter
- Wheels - Non Approval of Chrome Plating Aluminum Wheels
- Wheels - Aftermarket Wheel Rims With Pressure Switches
- Wheels - Retrofitting Unapproved 18 Inch Wheels
- Tire/Wheel Rim - Latest Winter Recommendations
- Wheel/Tire - General Information
- Tires/Wheels - Winter Tire/Wheel Rim Summary
- Tires - Manufacturer Contact Information
- Tires (VR-Rated Summer ) - Do Not Mix With ZR Rated
- Leather Upholstery - Reconditioning
- Power Seats - Insufficient Headroom
- Clutch Discs I On II - Friction Material Changed
- Ring Gear and Pinion Sets - Revised
- A/T - New Oil Pan, ATF Reservoir, and Filler Pipe
- A/T - Change Torque Converter When Replacing
- Clutch - Incomplete Disengagement
- Fuel Injectors - Correct Part Identification
- Brake Calipers - Modified Piston and Dust Seals
- Battery - Diagnosing a Discharging Condition
- Alternator Belt & Pulleys - Revised
- Voltage Regulator - Preventing Failure
- TDC Sensor - Do Not Use to Set Timing
- Exhaust System - Sulfur Like Smell
- Telephone - Installation and Operation
- Brakes - Pedal Pulsation/Vibration
- Clutch - Binding of Clutch Discs
- Crankshaft Main Bearings - Modifications
- Crankshaft Main Bearings - Modified
- Fuel/Ignition Modules - Use of Aftermarket Microchips
- Engine - Tune Up Specifications
- Aluminum Body Parts - Use of Plastic Filling Compounds
- Paint - Manual Supplements
- Tools - Celette Collision Repair Systems
- Windshield Antenna - Installation
- Windshield Antenna - Correct Installation
- Vehicle Security Codes - Requesting
- Rear Lock Lid Motor - Improved Motor
- Emissions - Basic Equipment and Tune-Up Specifications.
- Control Unit - Parts, Coding/Adapter Plug, O2 Sensor
- Door Speaker Mounting - Broken
- Windshield Cement - Mixing
- Engine Lubrication - Oils That Minimize Carbon Build-Up
- Engine - Motor Oils That Minimize Carbon Build-Up
- Engine - Approved Engine Oils
- Engine - Porsche Approved Oils
- A/T - Hard Shifting
- Central Tube - Installation
- A/T - Engine Vacuum Testing
- A/T - How To Use A Pressure Gauge
- A/T - Harsh Shifts or Erratic Shift Quality
- A/T - Slipping or Soft Shifts
- A/T - Slipping or No-Shift/Metal Sealing Rings
- A/T - Front Bushing Wear
- A/T - Math Formulas Part I
- A/T - Twenty Steps To Successful Repairs
- A/T - Math Part II
- A/T - Choosing the Right ATF
- M/T - Reverse Gear Lockout Plate Revised
- A/T - Approved ATF
- Transmission Fluids - Specifications
- Campaign - Fuel Cooler Replacement
- Vehicle - Year 2000 Hardware/Software Readiness
- Tools - Wheel Alignment Equipment
- Wheels/Tires - Approved Summer Wheels/Tires
- Tires/Wheels - Winter Tires/Wheels/Snow Chains
- CV Joint - New Grease
- Brake Fluid - DOT 4 Now Used In Production
- Hand Brake Shoe Retaining System - Correct Installation
- Seat Rail - Adjusting For More Leg Room
- A/C - Use of Correct Refrigerant
- Brakes - Squeaks May Be Normal Performance
- A/C - Refrigerent Oil Volume Capacities
- Engine - Approved Engine Oils Overview
- Tires - Summer Tire Summary
- Engine - Approved Porsche A40 Engine Oils
- Tires/Wheels - Handling Instructions After Damaged