Audi 80 Quiz
MPI and MPFI Injection Systems

Checking Individual Components

In this manual: MPI and MPFI Injection Systems
Technical Description — 39Engines — 41Exhaust System — 13Cooling System — 28Fuel tank and fuel pump — 12Air Filter and Intake Ducts — 13Mono-Motronic Injection System — 18Digifant Injection System — 19KE-III-Jetronic Injection System — 35MPI and MPFI Injection Systems — 32Clutch — 11Transmission and Driveline — 21Suspension and Steering — 33Brake System — 41Anti-lock brake system — 8Wheels and Tires — 13Body Electrical System — 35Ignition System — 24Lighting — 14Signaling Devices — 7Instruments and Auxiliary Equipment — 54Heating and Ventilation — 7Body Components — 18Troubleshooting — 6Specifications — 13
~1min read
У 2,8-литрового двигателя в моторном отсеке сзади справа находится расходомер

On the 2.8-liter engine, the air flow meter (arrow) is located at the rear right of the engine compartment, flange-connected to the air cleaner housing.

При снятом штекере (1) можно проверить подачу питания к впрыскным форсункам (2)

With connector (1) disconnected, check the power supply to the fuel injectors (2) using an LED voltmeter. When the engine is cranked with the starter, the LEDs in the voltmeter should flicker. Otherwise, there is no power supply.


Different designs of the idle air control valve. The 2.6-liter engine is shown on the left, the 2.8-liter engine on the right.

Сзади слева в двигателе расположен датчик температуры охлаждающей жидкости (ввинчен

The engine coolant temperature sensor for the ignition/injection system (screwed into the cooling system hose) is located at the rear left of the engine (arrow). The diagram shows the sensor resistance as a function of temperature.

Только 2,6-литровый двигатель оборудован датчиком температуры впускного воздуха

Only the 2.6-liter engine is equipped with an intake air temperature sensor (3). It is located at the rear right of the engine near the idle air control valve (1) and the fuel pressure regulator (2). The diagram shows the sensor resistance as a function of intake air temperature.

Следующие разделы описывают проверку компонентов системы впрыска, если таковую

The following sections describe the testing of fuel injection system components, where this can be performed with basic tools.

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A quick Audi 80 quiz: every answer comes with an explanation and a link to the manual page.