Where is the temperature sending unit located 1988 454 Chevy engine?

The temperature sending unit on a 1988 454 Chevy engine is typically located on the cylinder head, near the thermostat housing. There are sometimes two: one for the gauge and one for the computer (if equipped with electronic fuel injection).

However, the exact location can vary slightly depending on the specific engine configuration and whether it's a TBI (Throttle Body Injection) or carbureted system. To be certain, you should:

* Consult a repair manual: A Chilton's or Haynes manual specific to your 1988 vehicle with the 454 will show the exact location with a diagram. This is the best and most reliable method.

* Look at your engine: The sending unit is usually a small, cylindrical device with one or two wires attached. It's usually threaded into the engine block or cylinder head. Look closely near the thermostat housing.

* Trace the wires: If you can find the wire going to your temperature gauge, you can trace it back to the sending unit.

Remember to be cautious when working around hot engine components. Let the engine cool completely before attempting to locate or replace the sending unit.