1982 Mazda RX-7 GSL, Automatic TransFACTORY OEM SERVICE PROCEDURE

No. 1 Anti-AFTERBURN Valve

  1. Warm engine to normal operating temperature and ensure engine operates smoothly at idle. Stop engine. Disconnect air pump-to-air control hose at air pump.
  2. Disconnect electrical connectors from relief solenoid valve (Blue color dot) and switching solenoid valve (Gray color dot). Start engine and run at idle. Place finger over air pump-to-air control hose.
  3. Air should not be drawn in and idle speed should not change. Disconnect vacuum hose "A"; speed should return to normal idle. If valve does not respond as outlined, replace No. 1 anti-afterburn valve.
    Fig 1: Testing No. 1 Anti-Afterburn Valve
    G09323260Courtesy of MAZDA MOTORS CORP.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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