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Home >> Mazda >> 1980 >> RX-7 S, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Deceleration Control System >> Testing >> Power Valve Solenoid
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Power Valve Solenoid

  1. Warm engine to normal operating temperature and stop engine. Disconnect coupler from solenoid and connect voltmeter to light green/blue wire of wiring harness. On all Auto. Trans. and Calif. Man. Trans. models, disconnect vacuum switch coupler.
  2. On all models, start engine with choke knob fully pulled and push choke knob back completely. Increase engine speed from 2000 RPM and check to ensure current stops flowing to terminal when engine speed exceeds 4200-5000 RPM.
  3. Increase engine speed to 2000 RPM with throttle. Note that current stops flowing to terminal after 1 1/2-2 minutes after starting engine.
  4. On all Auto. Trans. and Calif. Man. Trans. models, isolate vacuum switch from system and perform test procedures given in steps  2) through 5  ) of EGR solenoid valve test. See "Mazda Rotary Engine Exhaust Gas Recirculation System" article in this section. 
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