Injection and engine management system Audi A4 B6, gasoline
Engine Management System — Design Description
it goes without saying that the fuel supply and metering, ignition and exhaust gas control in the Audi A4 are state-of-the-art. These tasks are performed by...
it goes without saying that the fuel supply and metering, ignition and exhaust gas control in the Audi A4 are state-of-the-art. These tasks are performed by...
Safety precautions when working with the engine management system
Warning! When working with devices that are part of the engine management system, remember that the fuel system is under pressure. Before loosening hose...
Warning! When working with devices that are part of the engine management system, remember that the fuel system is under pressure. Before loosening hose...
The most important components of the engine management system
The control device receives the most important data on the engine operating mode from the following sensors: Air flow meter. The air flow meter is located...
The control device receives the most important data on the engine operating mode from the following sensors: Air flow meter. The air flow meter is located...
Electronic accelerator pedal
The Audi A4 models are equipped with an electronic accelerator pedal. The throttle valve is no longer actuated via a cable. There is no mechanical connection...
The Audi A4 models are equipped with an electronic accelerator pedal. The throttle valve is no longer actuated via a cable. There is no mechanical connection...
Fuel injection system — design description
In principle, there are two types of fuel injection systems: fuel injection using a single injector for all cylinders and a multi-point injection system, the...
In principle, there are two types of fuel injection systems: fuel injection using a single injector for all cylinders and a multi-point injection system, the...
Operating principle of the electronic engine management system
During a cold start, the throttle control increases the amount of air admitted. The control unit receives information from the coolant temperature sensor about...
During a cold start, the throttle control increases the amount of air admitted. The control unit receives information from the coolant temperature sensor about...
Fuel injection system parts
Electric fuel pump delivers fuel through distribution pipe (fuel distributor) to the valve injectors. Pressure regulator maintains constant pressure in the...
Electric fuel pump delivers fuel through distribution pipe (fuel distributor) to the valve injectors. Pressure regulator maintains constant pressure in the...
Direct injection of gasoline
In the summer of 2001, direct fuel injection was successfully implemented for the Audi A4 with a 2.0-liter petrol engine. Only by using direct fuel injection...
In the summer of 2001, direct fuel injection was successfully implemented for the Audi A4 with a 2.0-liter petrol engine. Only by using direct fuel injection...
What to do if the injection system malfunctions
As mentioned above, in the case of an electronic engine control device, the possibilities for independent actions are quite limited. You cannot even set the...
As mentioned above, in the case of an electronic engine control device, the possibilities for independent actions are quite limited. You cannot even set the...
Fuel injection system programming
When the battery or the plug of the control unit is disconnected, all parameters that are determined during the self-learning of the system are erased. These...
When the battery or the plug of the control unit is disconnected, all parameters that are determined during the self-learning of the system are erased. These...
Visual inspection of the injection system
If you suspect that the engine and control unit are not working as they should, first check the following parts for cracks and leaks: Brake booster vacuum...
If you suspect that the engine and control unit are not working as they should, first check the following parts for cracks and leaks: Brake booster vacuum...
Removal valve injectors
In order to check and, if necessary, replace the injectors, it is necessary to remove the fuel distributor together with the injectors. The injectors are...
In order to check and, if necessary, replace the injectors, it is necessary to remove the fuel distributor together with the injectors. The injectors are...
Fuel distributor — design description
Fuel distributors in different engines are designed approximately the same, they are attached to the intake gas pipeline with a variable length of the tract....
Fuel distributors in different engines are designed approximately the same, they are attached to the intake gas pipeline with a variable length of the tract....
Checking the valve injectors
Below is a description of how to test the injectors using proprietary special tools and equipment. The measuring cup and auxiliary measuring devices, wire,...
Below is a description of how to test the injectors using proprietary special tools and equipment. The measuring cup and auxiliary measuring devices, wire,...
Checking the tightness of the injectors
1. Using the wires included in the VAG 1594 A measuring kit, short-circuit contacts 1 and 65 (1 and 80 in ALT and ALZ engines). In this case, one end of the...
1. Using the wires included in the VAG 1594 A measuring kit, short-circuit contacts 1 and 65 (1 and 80 in ALT and ALZ engines). In this case, one end of the...
The amount of fuel injected and the shape of the jet
1. Insert the injector to be tested into the measuring cup from the VAG 1602 fuel injection quantity tester kit (or similar vessel). Nozzle in a beaker 2....
1. Insert the injector to be tested into the measuring cup from the VAG 1602 fuel injection quantity tester kit (or similar vessel). Nozzle in a beaker 2....
Throttle control repair
1. Removal: Remove the storage box on the driver's side. 2. Disconnect the six-pin connector 3. 3. Remove screws 2 and 4 (only three screws) and remove the...
1. Removal: Remove the storage box on the driver's side. 2. Disconnect the six-pin connector 3. 3. Remove screws 2 and 4 (only three screws) and remove the...
Air filter — design description
To burn fuel, the engine needs clean air. Dirt and dust particles on the cylinder running surface could cause engine damage in a short time. Therefore, the...
To burn fuel, the engine needs clean air. Dirt and dust particles on the cylinder running surface could cause engine damage in a short time. Therefore, the...
Replacing the air filter cartridge (ASN engines)
Filter element ( here it is shown on the example of the 3.0 l ASN engine ) should be changed at least once a year, after two years replacement is mandatory....
Filter element ( here it is shown on the example of the 3.0 l ASN engine ) should be changed at least once a year, after two years replacement is mandatory....
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Similar sections of other Audi car models:
Power unit: Injection system (gasoline) Audi 80 B3 (1986-1991)
Power unit: Power system (injector) Audi 100 C3 (1982-1990)
Power unit: Fuel injection system Audi A3 Type 8L (1996-2003)
Power unit: Injection system (gasoline) Audi A6 C5 Allroad (1999-2005)
Engine 1.4 l (diesel): Fuel injection system Audi A2 (1999-2005)
Power unit: Injection system (gasoline) Audi 80 B3 (1986-1991)
Power unit: Power system (injector) Audi 100 C3 (1982-1990)
Power unit: Fuel injection system Audi A3 Type 8L (1996-2003)
Power unit: Injection system (gasoline) Audi A6 C5 Allroad (1999-2005)
Engine 1.4 l (diesel): Fuel injection system Audi A2 (1999-2005)
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