Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
1991 Porsche 911 Service and Repair Manual
Regular price
$29.99 USD
Unit price
Covers all 1991 911 trims — Carrera 2 Targa 2-Door, Carrera 2 Convertible 2-Door, Carrera 2 Coupe 2-Door +4 more ·
Digital format
Any device
Yours forever
Money-back
4.7
·
Trusted by 14,000+ mechanics & DIYers
End of Preview
Unlock the Full Manual
Complete repair procedures
Wiring diagrams & schematics
Torque specifications
Full search & bookmarks
$29.99
Scroll to view more pages
1991 Porsche 911 Service and Repair Manual
Regular price
$29.99 USD
Unit price
1991 Porsche 911 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical coverage with wiring diagrams
- Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more
Trims covered
- Carrera 2 Targa 2-Door
- Carrera 2 Convertible 2-Door
- Carrera 2 Coupe 2-Door
- Carrera 4 Convertible 2-Door
- Carrera 4 Coupe 2-Door
- Carrera 4 Targa 2-Door
- Turbo Coupe 2-Door
Engines covered
- 3.6L 3606CC H6 GAS SOHC Naturally Aspirated
- 3.3L 3294CC H6 GAS SOHC Turbocharged
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
A PART OF THE STEERING COLUMN UPPER UNIVERSAL JOINT CRACKED DURING THE MANUFACTURING PROCESS.
Consequence
THIS CONDITION COULD RESULT IN NOISE AND FREE PLAY IN THE STEERING SYSTEM AND IF LEFT UNCORRECTED, W
Remedy
DEALERS WILL INSPECT THE UNIVERSAL JOINT FOR CRACKS AND WILL REPLACE CRACKED JOINTS WITH NEW PARTS.
THE HYDRAULIC BRAKE PRESSURE REDUCTION VALVE CAUSES THE RATE OF HYDRAULIC PRESSURE REDUCTION TO SLOW DOWN, WHICH MAY RESULT IN THE REAR WHEELS LOCKING-UP EVEN WITH THE ANTI-LOCK BRAKE SYSTEM IN OPERAT
Consequence
REAR WHEEL LOCK-UP MAY RESULT IN LOSS OF VEHICLECONTROL AND AN ACCIDENT.
Remedy
PORSCHE DEALERS WILL INSTALL A MODIFIED HYDRAULIC BRAKE PRESSURE REDUCTION VALVE.
AFTER THE ENGINE HAS BEEN TURNED OFF, THE REAR HEATER WILL AUTOMATICALLY OPERATE IN ORDER TO DISSIPATE HEAT IN THE ENGINE HEATING SYSTEM. DURING THIS OPERATION, THE RESISTOR FOR THE REAR HEATER BLOWER
Consequence
THE OVERLOADED RESISTOR CAN CREATE HEAT SUFFICIENT TOIGNITE THE PLASTIC AIR PIPE TO WHICH IT IS CONN
Remedy
PORSCHE DEALERS WILL INSTALL A NEW RESISTOR CONTAINING A CIRCUIT BREAKER.
THE BALL SOCKETS ON THE CRUISE CONTROL LINKAGE CAN BREAK, ALLOWING THE CRUISE CONTROL LINKAGE TO BECOME DETACHED ON ONE END AND JAM ON NEARBY COMPONENTS, WHICH COULD IMPAIR THROTTLE PLATE OPERATION.
Consequence
IMPAIRED THROTTLE PLATE OPERATION COULD PREVENT THEENGINE FROM RETURNING TO IDLE, RESULTING IN UNWAN
Remedy
REPLACE THE CURRENT PLASTIC BALL SOCKETS WITH A NEW LINKAGE USING STEEL BALL SOCKETS, AND LUBRICATE
Special tools and equipment information for the Boxster, Cayman, 911, and Panamera
Information for PIWIS tester update 42.300.050 & .052
Instructions on manufactures certificate for approved Porsche A40 engine oils
Instructions on manufacturers certificate for approved C20 engine oils
Instructions on manufactures certificate for approved Porsche C30 engine oils
Information for PIWIS tester update 42.300.035
Information for PIWIS tester update 42.300.040 & .041
Information for PIWIS tester update 42.300.030 - .032
Showing the 8 most recent of 82 technical service bulletins on file with NHTSA.
ON 4/18/2021 I WAS DRIVING MY 1991 PORSCHE C2 ON THE 10 FREEWAY IN MONTEREY PARK, CA WHEN SUDDENLY I HEARD A LOUD BANG SOUND FROM THE ENGINE. I GOT OFF THE FREEWAY AND STOPPED AND FOUND THAT THE ENTIR
Other Years of the Porsche 911
2024 Porsche 911 Service and Repair Manual2023 Porsche 911 Service and Repair Manual2022 Porsche 911 Service and Repair Manual2021 Porsche 911 Service and Repair Manual2020 Porsche 911 Service and Repair Manual2019 Porsche 911 Service and Repair Manual2018 Porsche 911 Service and Repair Manual2017 Porsche 911 Service and Repair Manual2016 Porsche 911 Service and Repair Manual2015 Porsche 911 Service and Repair Manual2014 Porsche 911 Service and Repair Manual2013 Porsche 911 Service and Repair Manual2012 Porsche 911 Service and Repair Manual2011 Porsche 911 Service and Repair Manual2010 Porsche 911 Service and Repair Manual2009 Porsche 911 Service and Repair Manual2008 Porsche 911 Service and Repair Manual2007 Porsche 911 Service and Repair Manual2006 Porsche 911 Service and Repair Manual2005 Porsche 911 Service and Repair Manual2004 Porsche 911 Service and Repair Manual2003 Porsche 911 Service and Repair Manual2002 Porsche 911 Service and Repair Manual2001 Porsche 911 Service and Repair ManualView all Porsche 911 years