Intake air temperature sensor
This sensor is built into the intake duct and measures the temperature of the intake air. At the same time, its internal resistance changes, the value of which is converted in the EEC-IV device into an appropriate signal for preparing the fuel mixture.
Coolant temperature sensor
A sensor similar to the intake air temperature sensor is screwed into the intake manifold under the CFI assembly.
Vacuum sensor
The vacuum sensor is mounted behind the CFI assembly on the front wall and connected via a vacuum hose to the intake manifold. The transmitter has its own electronic pressure element which transmits a frequency signal to the EEC-IV.
Speed sensor
The speed sensor is installed on the connection of the tachometer drive shaft. 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 installed on the engine block and registers knocking during the combustion of fuel in each cylinder. The EEC-IV device regulates the ignition timing in such a way as to prevent pre-ignition when the fuel mixture is compressed in the cylinders.
Lambda probe
The lambda probe is mounted on the front exhaust pipe and is electrically heated to reach operating temperature after a cold start. The voltage signal that occurs in the lambda probe when the oxygen content changes is used by the EEC-IV device, together with the signal parameters from other sensors, to prepare the fuel mixture.
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