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Home >> Mazda >> 1995 >> RX-7 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Computerized Engine Controls >> Fuel Temperature Sensor
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Fuel Temperature Sensor

  1. Remove circuit opening relay. Start engine and allow system to fuel pressure to bleed down. Install circuit opening relay. Remove upper intake manifold. Remove fuel temperature sensor from fuel rail.
  2. Place sensor and thermometer in container of water. Connect ohmmeter to sensor terminals. Heat water. Note resistance at specified temperatures. See FUEL TEMPERATURE SENSOR RESISTANCE  table. Replace sensor as necessary.
FUEL TEMPERATURE SENSOR RESISTANCE

Temperature Ohms
68°F (20°C) 2200-2700
176°F (80°C) 290-350