- 4- and 6-cylinder in-line HFM engines;
- V6 Motronic ME 2.0 engines;
- 4.2 L Motronic ME 1.0 V8 engines;
- V8 5.0L HFM engines.
Pic. 5.36. Elements of the HFM electronic control system: 1 - ignition coil of the 2nd and 3rd cylinders; 2 - nozzle; 3 - ignition coil of the 1st and 4th cylinders; 4 – an executive body of adjustment of idling; 5 - intake air temperature sensor; 6 - knock sensor; 7 - crankshaft position sensor; 8 - camshaft position sensor; 9 - Hall sensor; 10 - coolant temperature sensor
On gasoline engines equipped with an injection system, the air-fuel mixture entering the combustion chamber has an exact dosage depending on operating conditions, which ensures low fuel consumption, unlike carburetor engines. Due to fuel metering and the use of an adjustable catalytic converter, the content of harmful substances in the exhaust gases is reduced. Self-diagnostics of the control system with memory, provides quick troubleshooting by reading fault codes. Electronic control unit (ECU) engine determines the optimum fuel injection timing and quantity. The ECU is in constant communication with other electronic devices in the vehicle, such as the automatic transmission control unit. Elements of the engine management system shown in fig. 5.36, retain their performance throughout the entire life of the vehicle and do not require additional maintenance.
Work on the diagnosis and repair of the engine management system requires special tools, so they should be carried out in car repair shops.