LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1994 >> Forward Control 4.3 Z, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Engine Controls - Remove/Install/Overhaul) >> Fuel System (Gasoline) >> Idle Air Control (IAC) Motor >> Installation

Idle Air Control (IAC) Motor: Installation

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Yukon, 1994 GMC Suburban, 1994 GMC Pickup, 1994 GMC Cab & Chassis, and 1994 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect gasket or "O" ring for damage. Replace if necessary. Measure distance from IAC contact flange to tip of pintle. Distance should not exceed 1 1/8" (28 mm). If valve is extended too far, damage to valve will result during installation.
  2. To set IAC pintle length on new IAC, use finger pressure to slowly retract pintle. Lubricate NEW "O" ring with ATF and install NEW gasket. Install IAC motor on throttle body. Tighten IAC valve to specification. See TORQUE SPECIFICATIONS .
    CAUTION: DO NOT  extend or retract pintle if IAC has been in service, or damage to worm gear will result.
  3. Connect electrical lead to IAC motor and install air cleaner. Start engine and allow it to reach normal operating temperature. Drive vehicle. It may be necessary to reset idle speed. To reset, disconnect battery cable for 10 seconds and reconnect. Cycle ignition on with engine off for 5 seconds. Turn ignition off for 10 seconds and restart vehicle. Proper idle will be initialized.
scientia non olet · About LEMON Manuals