Look along the air intake passage front to throtle body; I'm sure it's there somewhere. Many parts houses on the internet have component locators, try NAPA or Autozone, Shucks....many local libraries have on line resources for auto repair. You might find a component locator there as well. Go buy a Haynes Auto Repair manual for your car.
it's on the intake manifold.
on the intake manifold on the driverside.
antifreeze coming from back of intake on 1993 gmc sierra
installed on the air cleaner
on the front of the intake on left side when standing in front of truck.
on the air filter box
The engine coolant temperature sensor and coolant temperature gauge sender are located on the passenger's side of the engine, under the intake manifold.
where is the temperature sensor 1993 BMW 318i
http://www.ncttora.com/fsm/1993/engine/92volumeai.pdf
its in the intake manifold
driver side or passenher side of the head and also in top of the intake by the water neck
its called the MAS mass airflow sensor, and its right after your intake. its a big black peice with a plug on it that is part of your intake