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Home › Mazda › 1985 › RX-7 GSL, Standard › Repair and Diagnosis › Engine Performance › System › Air Injection System - CARBURETED › Component Testing › Port Air Solenoid Valve

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 Figure . 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 50 MPH. At speeds below 50 MPH, reading should be below 2 volts. At speed above 50 MPH, voltage should be approximately 2 volts.
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