Mono-Motronic injection system Audi 100 C4, petrol
Basic elements
Control unit It is located in the front passenger footwell area in front of the heating duct and receives information from the following units via a multi-pin...
Control unit It is located in the front passenger footwell area in front of the heating duct and receives information from the following units via a multi-pin...
Mono-Motronic Operating Procedure
Cold engine starting: The control unit receives information about the engine temperature from the coolant temperature sensor. The colder the engine, the longer...
Cold engine starting: The control unit receives information about the engine temperature from the coolant temperature sensor. The colder the engine, the longer...
Malfunctions and self-diagnosis
The Mono-Motronic injection system control unit can recognize and store in memory some of the faults that occur during engine operation. If the fault does not...
The Mono-Motronic injection system control unit can recognize and store in memory some of the faults that occur during engine operation. If the fault does not...
Do-it-yourself repair
Unfortunately, many injection system checks cannot be performed at home due to the lack of necessary testing devices. However, there is still a certain scope...
Unfortunately, many injection system checks cannot be performed at home due to the lack of necessary testing devices. However, there is still a certain scope...
Visual inspection
A leak in the intake system area allows access to unaccounted air, i.e. air that is not taken into account in the calculations of the control unit and...
A leak in the intake system area allows access to unaccounted air, i.e. air that is not taken into account in the calculations of the control unit and...
Checking individual elements
The following paragraphs describe the procedure for checking the components of the injection system, which can be carried out at home. Checking the throttle...
The following paragraphs describe the procedure for checking the components of the injection system, which can be carried out at home. Checking the throttle...
Idle mode check and exhaust gas analysis
With the Mono-Motronic injection system, adjustment work is unnecessary because there is nothing else to adjust in this system. The control unit adjusts the...
With the Mono-Motronic injection system, adjustment work is unnecessary because there is nothing else to adjust in this system. The control unit adjusts the...
Checking the catalytic converter and lambda probe
TO #8 This test is carried out in the workshop as part of the annual exhaust gas toxicity test. The CO content is measured both at the catalytic converter...
TO #8 This test is carried out in the workshop as part of the annual exhaust gas toxicity test. The CO content is measured both at the catalytic converter...
Cable-operated gas throttle
The connecting cable between the accelerator pedal and the injection system is very sensitive to longitudinal bending. When working in the engine compartment,...
The connecting cable between the accelerator pedal and the injection system is very sensitive to longitudinal bending. When working in the engine compartment,...
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