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Coolant Thermo Valve (Man. Trans. & Turbo)

  1. Remove coolant thermo valve from engine. Immerse coolant thermo valve in water.
  2. Heat water gradually and observe the temperature. Below approximately 140°F (60°C), air should pass from top vacuum line to bottom vacuum line. Above approximately 140°F (60°C), air should pass from top vacuum line to orifice on top of thermo valve.
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