Contents: Intake air temperature sensor ↳ Coolant temperature sensor ↳ Vacuum sensor ↳ Speed sensor ↳ Knock sensor ↳ Lambda probe ↳
Intake air temperature sensor
This sensor is built into the intake duct and measures the temperature of the intake air. In doing so, its internal resistance changes, the value of which is converted in the EEC-IV device into a corresponding signal for preparing the fuel mixture.
Coolant temperature sensor
The sensor is similar to the intake air temperature sensor and is screwed into the intake manifold under the CFI unit.
Vacuum sensor
The vacuum sensor is mounted behind the CFI unit on the front wall and is connected via a vacuum hose to the intake manifold. The sensor has its own electronic pressure element, which transmits a signal of a certain frequency to the EEC-IV device.
Speed sensor
The speed sensor is mounted on the tachometer drive shaft connection. It creates an alternating voltage, the frequency of which is proportional to the number of revolutions of the tachometer shaft.
Knock sensor
The knock sensor is mounted on the engine cylinder block and registers detonation during fuel combustion in each cylinder. The EEC-IV device regulates the ignition timing in such a way as to prevent premature ignition during compression of the fuel mixture in the cylinders.
Lambda probe
The lambda probe is installed on the exhaust pipe and is electrically heated to achieve operating temperature after a cold start. The voltage signal generated in the lambda probe when the oxygen content changes is used by the EEC-IV device together with the parameters of signals from other sensors to prepare the fuel mixture.