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Home >> Oldsmobile >> 1985 >> Calais Base, 2.5 U, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - Single Unit TBI >> Overhaul >> Reassembly >> Throttle Body

Throttle Body

Place throttle body on holding fixture. Install IAC assembly with new gasket. Tighten securely. Install TPS actuator lever by aligning flats on lever with flats on end of shaft. DO NOT  install TPS until assembly of throttle body is complete.

NOTE: Before installing IAC assembly, measure distance that valve extends from motor housing. Measuring from gasket mounting surface of housing to end of pintle, distance should not exceed 1 1/8" (28 mm). If not to specification, push pintle inward (ISC valve with collar on electrical connector) or compress pintle retaining spring toward IAC body while turning pintle inward with a clockwise motion (IAC valve without collar on connector). On IAC valves without collar, return spring to original position with straight portion of spring end aligned with flat surface under pintle head.
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