Where is the number 4 engine coil in a 2001 Lincoln ls v6?

The 2001 Lincoln LS V6 engine uses a single coil-on-plug (COP) ignition system. This means each spark plug has its own ignition coil directly mounted on top of it. There isn't a "number 4 engine coil" in the traditional sense of multiple coils for several cylinders.

To find the coil for cylinder 4, you'll need to locate cylinder 4 on the engine itself (often marked on the valve covers or intake manifold) and the ignition coil will be directly above it. Consult a repair manual or online diagrams for the precise cylinder numbering for your engine's orientation.