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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 492 (SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM BP, BP WITH TC))ENGINE CONTROL SYSTEM OPERATION INSPECTIONVARIABLE VALVE TIMING SYSTEM OPERATION INSPECTIONWHEN IDLING CANNOT BE CONTINUED
1999 Mazda 626 ES, 2.5 D, Standard

When idling cannot be continued

1999 Mazda 626 ES, 2.5 D, StandardSECTION When idling cannot be continued
WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the OCV (oil control valve) and verify that the spool valve is at maximum retard position.
    • If the spool valve is stuck in advance direction, replace the OCV (oil control valve).
  2. Connect the OCV (oil control valve) connector.
  3. Turn the ignition switch on.
  4. Verify that the spool valve is at maximum retard position.
    • If the spool valve is stuck in advance direction, inspect for the following.
      • Short circuit in harnesses or connectors between the OCV (oil control valve) and the PCM.
  5. Inspect the VVT (variable valve timing) actuator.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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.