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Home >> Mazda >> 1986 >> RX-7 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Air Injection System >> System Testing >> Air Induction System >> Coolant Thermo Valve (Auto. Trans.)

Coolant Thermo Valve (Auto. Trans.)

  1. Remove coolant thermo valve from engine. Immerse coolant thermo valve in water.
  2. Heat water gradually and observe the temperature. Below approximately 154°F (68°C), air should pass from middle vacuum line to bottom vacuum line. Above approximately 154°F (68°C), air should pass from middle vacuum line to top vacuum line.