Its location on a 1990 Chevy Lumina depends slightly on the engine type (2.5L, 3.1L, or a V6). However, it's generally found near the crankshaft, usually on the engine block itself, somewhere near the bellhousing (where the transmission connects to the engine). It might be on the passenger side or the driver's side, depending on the specific engine and transmission combination.
To pinpoint it exactly:
* Consult a repair manual specific to your Lumina's year, engine, and model. A Haynes or Chilton manual will have diagrams showing its location.
* Look for a small sensor with a single wire or a couple of wires plugged into it. It often has a connector that's easily accessible.
* The sensor may be mounted in a bracket or directly to the engine block.
* You'll likely need to look underneath the vehicle for better access, though in some cases, it might be partially visible from the top after removing some components.
Without knowing your exact engine, I can't give a more precise location. Using a repair manual is your best bet for accurate identification and access.
