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Home >> Subaru >> 2021 >> WRX STI >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (2.5L) >> Throttle Body >> Removal
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Throttle Body: Removal

  1. Disconnect the ground cable from battery.
  2. Lift up the vehicle.
  3. Remove the under cover. Refer to EXTERIOR/INTERIOR TRIM>FRONT UNDER COVER>REMOVAL .
  4. Drain approximately 3.0 L (3.2 US qt, 2.6 Imp qt) of coolant. Refer to COOLING(STI)>ENGINE COOLANT>REPLACEMENT>DRAINING OF ENGINE COOLANT .
  5. Remove the intercooler. Refer to INTAKE (INDUCTION) (STI)>INTERCOOLER>REMOVAL .
  6. Disconnect the connector (A) from the throttle position sensor, and the connector (B) from the manifold pressure sensor.
    G08538625Courtesy of SUBARU OF AMERICA, INC.
  7. Disconnect the engine coolant hose from throttle body.
    G08538626Courtesy of SUBARU OF AMERICA, INC.
  8. Remove the throttle body from the intake manifold.
    G08538627Courtesy of SUBARU OF AMERICA, INC.
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