Protege L4-1839cc 1.8L DOHC (1990)
Throttle Body: Description and Operation
Throttle Body
The throttle body regulates the amount of air allowed into the engine depending on the drivers demand for power. The farther the throttle is opened the
more air and fuel is allowed into the cylinders and the more torque and horsepower is produced. The throttle body consists of a single throttle valve in
the housing (unlike other models that use a primary and secondary throttle valve).