Fuel system 3
Tank vent 13
Ignition system with Hall sender 14
Idle Stabilizer 18
Manual transmission 21
Running gear 23
Equipment - 25
Crankcase vent 32
Fuel system 34
Ignition system 36
Oxygen sensor with acceleration enrichment 44
Manual transmission 47
Chassis, engine and transmission number ranges 50 ... 51
Specifications 54 ... 62
Adjusting values, survey of equipment 63 ... 65
This brochure has 3 sections.
— 924, modifications for 1981 models
— 924 Turbo, modifications for 1981 models
— Specifications / Diagrams / Survey of Equipment / Testing and Adjusting Values - 924 — All Types
The following modifications have been made on the Porsche 924 for 1981.
— Ignition system with Hall sensor and electronic idle stabilizer
— New steering column switch
— Two-tone horn from 924 Turbo
— New symbols for controls
— Standard front stabilizer bar
— Brake fluid level indicator
— Carpet trim on center console
The various modifications will be described in the following text.
The air cleaner cover has a new intake neck to reduce the amount of air intake noise.
Fuel Pump (short neck version) 924, 924 Turbo
The EKP IV fuel pump is fitted with a removable check valve. As of the 1981 model year the fuel pump is identical to the 911 .'
Fuel pump part no. 911.608.102.02 Bosch code 0580 254 967
Fuel injection lines are made of steel and have a straight connection on the fuel injectors.
Temperature Switch for Control Pressure Reduction
The temperature switch was changed to improve warm start behavior. The switching point is 35 °C (previously 45 °C).
When starting the engine the cold start valve (6) and from there the solenoid (1) are supplied with power from the starter via term. 50 (red/black wire, term. 3 on 7-pin round plug behind the ignition coil). When coolant temperature is above + 35 °C the temperature switch (2) will make ground contact with the solenoid. The solenoid valve opens and the fuel return flow is direct from the control pressure line to the tank return.
The control pressure will drop (to about 0.6 bar) and the sensor plate will move higher during starting.
Was this article helpful?
The History of Porsche Cars through its generational changes. A must have ebook for any Porsche fanatic, this ebook is a reference book for Porsche enthusiasts. Discover all there is to know about the greatest Porsches ever made. All models are fully described and illustrated providing a definitive production history plus an accurate guide to original specs and equipment.