Where is the engine coolant temperature switch on a 1997 Oldsmobile achieva?

The Engine Coolant Temperature (ECT) sensor on a 1997 Oldsmobile Achieva is typically located on the cylinder head, near the thermostat housing. However, the exact location can vary slightly depending on the engine (2.2L or 3.1L).

To be certain:

1. Consult your owner's manual: This is the best resource for the exact location of the ECT sensor.

2. Check a repair manual (Haynes or Chilton): These manuals have diagrams showing the sensor's location for your specific engine.

3. Look online: Search for "1997 Oldsmobile Achieva ECT sensor location [2.2L or 3.1L engine]" including your specific engine size. Images found on forums or repair sites can be helpful.

The sensor itself is usually a single-wire or two-wire sensor and is fairly small. It will be screwed into the cylinder head. Be careful when locating it as other sensors might be in the vicinity.

Important Note: Before attempting any work on your car, disconnect the negative battery terminal to prevent electrical shocks or damage.