Where on a 1997 Dodge Ram 318 5.2L is the driver side upper oxygen sensor located?
On a 1997 Dodge Ram 1500 with the 5.2L V8 engine, the driver's side (left) upper oxygen sensor is located on the exhaust manifold, near the front of the engine, on the driver's side cylinder head. It's usually close to the #1 or #6 cylinder. You'll need to look carefully at the exhaust manifold to locate it; it's a threaded sensor with a wire harness connected to it. Consult a repair manual or online diagrams for a precise visual reference if needed. The exact position might vary slightly between trucks.