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Throttle Body

  1. Before installing idle air control valve, measure distance between tip of valve pintle and mounting surface. Distance should not exceed 1 1/8" (28 mm).
  2. To adjust, exert firm pressure on pintle while moving pintle from side to side until distance is correct.
    NOTE: On 7.4L engines, the Idle Air Control (IAC) valve pintle diameter is 12 mm rather than 10 mm. Ensure replacement IAC valve pintle taper is correct.
  3. Invert throttle body assembly and place on clean, flat surface. Install IAC valve and gasket. On 7.4L engine, tighten IAC valve screws to 28 INCH lbs. (3 N.m). Tighten threaded IAC valve to 13 ft. lbs. (18 N.m).
  4. Place throttle body on holding fixture. Install throttle position sensor. Use Loctite on throttle position sensor attaching screws.
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