Where is ERG valve in 1994 buick century 3300 v6?
The ERG (Exhaust Gas Recirculation) valve on a 1994 Buick Century 3.3L V6 is located on the intake manifold. It's not easily visible without some disassembly. You'll likely need to remove some components of the intake system to see it clearly. A detailed diagram in a repair manual for that specific year and engine is highly recommended to locate it precisely.