Idle Air Passage Plug - GM - Thexton Mfg Co

The Thexton Mfg Co. 368 Idle Air Passage Plug is an essential diagnostic tool designed for precise idle adjustment on General Motors (GM) vehicles equipped with Throttle Body Injection (TBI) systems. This specialized plug allows professional technicians to effectively seal off the idle air passage, enabling accurate minimum idle adjustments by isolating the Idle Air Control Valve (IACV) circuit.

Key Features

• Precision Idle Adjustment: Specifically engineered to block the idle air passage, facilitating accurate minimum idle speed adjustments on TBI systems.
• TBI System Compatibility: Designed for use with GM Throttle Body Injection systems featuring an Idle Air Control Valve (IACV).
• Durable Construction: Made from soft, yet resilient plastic to ensure a secure seal without damaging throttle body components.
• User-Friendly Design: Features a convenient T-handle for easy insertion and removal, enhancing efficiency during diagnostic procedures.
• Cross-Fire Injection Ready: Two plugs are required when working with cross-fire injection systems, providing comprehensive coverage for specific GM applications.

Applications

This specialized plug is indispensable for mechanics and automotive technicians performing routine maintenance, diagnostics, or repairs on GM vehicles with TBI systems. It allows for the precise isolation and adjustment of the minimum idle speed, which is crucial for correct engine operation and emissions control. Use it when diagnosing rough idle conditions, after throttle body cleaning, or when replacing IACV components to ensure proper calibration.