Porsche 911 Carrera 2 / Carrera 4 (964) Heating, Ventilation & Air Conditioning Workshop Manual – HVAC System Repair Guide

Vehicle Coverage

Supported Porsche models:

• Porsche 911 Carrera 2 (964)

• Porsche 911 Carrera 4 (964)

Model years covered:

• 1989

• 1990

• 1991

• 1992

• 1993

System coverage:

• Heating system

• Ventilation system

• Air-conditioning system

• Interior electrical equipment

• Instrumentation and vehicle electronics

Technical Highlights

This workshop manual includes detailed procedures for:

• Air-conditioning system removal and installation

• Heater and climate control unit dismantling

• HVAC flap adjustment procedures

• Blower motor replacement

• Refrigerant system servicing

• Refrigerant pressure and temperature testing

• AC compressor system diagnostics

• Air-conditioning refrigerant filling procedures

• Electrical diagnostics for HVAC control units

• Temperature sensor testing

• Interior instrumentation diagnostics

• Alarm system troubleshooting

• Telephone system installation

• Windshield wiper system servicing

The manual also provides technical diagrams, diagnostic procedures, service specifications, and troubleshooting charts used by professional Porsche service technicians.

Table of Content

Air-Conditioning System

• Technical data

• Removing and installing components of the heating/air-conditioning system

• Dismantling and assembling heating/air-conditioning unit

• Flap adjustment procedures

• Checking refrigerating capacity

• Removing and installing heater blower motors

• Safety regulations for handling refrigerant R12

• Installation work on the air-conditioning system

• Modifying wiring loom of heater/AC unit

• Pressure and temperature specifications

Diagnosis / Troubleshooting

• HVAC fault memory diagnosis

• Temperature sensor testing

• Mixing flap motor diagnostics

• Heater blower motor diagnostics

• Rear blower motor diagnostics

• Oil cooler blower motor diagnostics

• Condenser blower diagnostics

Instruments, Fuel Gauge & Alarm System

• Acceleration sensors

• Fuel tank sender unit testing

• Alarm system diagnostics

Radio, Telephone & On-Board Computer

• Telephone preparation kits

• Installation position of components

• Antenna installation

• Cable routing procedures

• Retrofitting telephone systems

Windshield Wipers & Washer

• Removing and installing wiper motor

• Washer system service procedures

File Information

• File type: PDF

• Language: English

• Pages: 76

• Manufacturer: Porsche AG

• Document type: Factory Workshop Manual

• Manual volume: Volume VI – Heating / Ventilation / Air Conditioning / Electrics

• System coverage:

  • HVAC systems

  • Air-conditioning systems

  • Heating and ventilation systems

  • Instrumentation

  • Alarm system

  • Wiper systems

  • Interior electronics

• Vehicle models:

  • Porsche 911 Carrera 2 (964)

  • Porsche 911 Carrera 4 (964)

• Delivery: Fast download link