On a Ford 2.3L engine, freeze plugs (also known as expansion plugs) are typically located on the engine block. You can find them on the sides of the block, usually near the cylinder head area, and sometimes at the rear of the engine. Their purpose is to prevent damage from freezing coolant by allowing expansion if the coolant freezes. If you need to replace them, ensure the engine is cool and drained of coolant for safety.
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