should be on the intake runners, but everyone should have a manual for their vehicle, and a professional shop manual should be available at the library in the reference section--you can make copies of the necessary information...good luck :)
The intake air temperature (IAT) is located inside the intake housing close to the air filter.
The air intake temperature sensor is on the intake housing between the filter and the throttle body.
It is located under the intake manifold between the engine and the firewall.
The idle air control valve on a 1990 Ford Escort is located on the intake manifold. An idle air control valves function is to control the amount of air that is allowed to enter the engine so the idle can stabilize.
under the intake manifold on the 2.0 twin cam,you can see it from the driver side under the intake
The 2002 Ford Escort zx2 does have an air intake air temperature sensor. The sensor is at the top of the engine on the drivers side.
On my 1998 zx2 it is located on the intake tube after the mass airflow sensor. It points to the front of the car and has two wires coming out of it.
temperature sensor for this car is located on a heater hose on the drivers side near the battery and under the black air intake tube
On the air intake.
The spi Split Port Induction intake manifold will have to be replaced.
the iac valve (idle air control) is located on top of the intake manifold ,right before the throttle body.
This sound like a bad temperature sending unit mainly located on the intake manifold sometimes by the thermostat housing ,it has one wire plug.