Mazda 1984 RX7 Spezifikationen PDF herunterladen (Seite 10)

AIR INJECTION SYSTEM - CARBURETEDArticle Text (p. 6)

1984 Mazda RX7For iluvmyrx7.com

Fig. 6: Testing Heat Hazard Sensor

PORT AIR SOLENOID VALVE

1) Warm up engine and run at idle speed. Connect a tachometer

to engine. Disconnect the connector from the throttle sensor and

connect a jumper wire to "A" and "C" terminals of the connector. See

Fig. 3. Connect a voltmeter to the port air solenoid terminal and

ground.

2) Increase engine speed and watch voltmeter. With engine

speed below 3000 RPM, voltage should be below 2 volts. With engine

speed between 3000-4000 RPM, voltage should be about 12 volts. At

above 4000 RPM, voltage should be below 2 volts.

3) Disconnect the jumper wire from "A" and "C". Position the

vehicle securely on a rolling load tester. Increase the vehicle speed

to to 50 MPH. At speeds below 50 MPH, reading should be below 2 volts.

At speed above 50 MPH, voltage should be approximately 2 volts.

CATALYST THERMO SENSOR

Disconnect the connector for the catalyst thermo sensor and

check for continuity. Sensor is no good if there is no continuity.

END OF ARTICLE

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Mazda 1984 RX7 Spezifikationen Seite 10