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Home >> Mazda >> 1983 >> RX-7 GSL, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Deceleration Control System >> Component Testing >> Coasting/Shutter Valve
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Coasting/Shutter Valve

  1. Warm engine to normal operating temperature. Stop engine. Disconnect air cleaner-to-coasting valve hose at air cleaner. Start engine and run at idle. Place finger over disconnected hose; air should not be drawn into hose.
  2. Disconnect electrical connector from shutter solenoid valve (Yellow dot). Air should be drawn into disconnected hose and idle should fluctuate.
  3. At the same time, the coasting valve rod should be pulled into coasting valve about .4" (10mm), opening shutter valve. Replace coasting/shutter valve if it does not respond as outlined.
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