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Where is the idle air control valve on a 92 buick lesabre?

The Idle Air Control (IAC) valve on a 1992 Buick LeSabre is located on the throttle body. The throttle body itself is usually found on the intake manifold, near the engine's front. It's a small, usually cylindrical valve with electrical connectors. However, *precisely* locating it requires visual inspection. A repair manual specific to that year and model would give you the best pictures and instructions.