1988 Mazda 929 AutomaticFACTORY OEM SERVICE PROCEDURE

Purge Solenoid No. 2

  1. Connect voltmeter between Blue/Yellow solenoid wire and ground. See Fig 1 . With engine temperature less than 158°F (70°C), start engine and note voltage. Voltage should be 12 volts.
    Fig 1: Checking Purge Solenoid No. 2
    G94847Courtesy of MAZDA MOTORS CORP.
  2. Warm engine to normal operating temperature. With engine RPM less than 1500, voltage should be 12 volts. During acceleration with engine RPM greater than 1500, voltage should be less than 2.5 volts. Any time except acceleration, with engine RPM is greater than 1500, voltage should be 12 volts.
  3. Disconnect vacuum hose from solenoid. Blow through port B. Ensure air exhausts through air filter. See Figure .
  4. Disconnect 2 wire connector from solenoid. Connect 12 volts to one terminal and ground the other terminal of solenoid. Blow air though port B. Ensure air exhausts through port A.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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