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Auxiliary Air Valve

WARNING: This page is about a different car, the 1990 Daihatsu Rocky and 1990 Daihatsu Charade. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect air cleaner hose from throttle body. Start engine. Note location of auxiliary valve. See Fig 1 .
  2. Place finger over auxiliary valve when coolant temperature is less than 137°F (75°C). Ensure engine speed drops. Repeat procedure with coolant temperature greater than 146°F (80°C). Engine speed should not change. Replace throttle body if auxiliary air valve fails to operate correctly.
Fig 1: Checking Auxiliary Air Valve Operation
G90B16585Courtesy of DAIHATSU MOTOR CO., LTD.
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