The 1990 Geo Tracker IAT sensor is located on the top of the transmission. The IAT sensor will be near the back of the transmission.
The IAT Sensor on a 1992 Geo Tracker is the Intake Air Temperature Sensor. Replacing the air filter might fix this problem.
The IAT ( Intake Air Temperature ) sensor is located on the back of the air cleaner housing.
Its on the Air box
on a 3 cyl.metro,the iat sensor is found on the air cleaner housing towards the rear of the assembly
The 1990 Chevrolet Corvette IAT sensor does have two wires. The sensor has a ground wire and a positive wire.
airbag sensor and iat sensor are not the same thing... wiki
connected to the air cleaner housing
On a 1990 Jeep Wrangler, the IAT sensor is located on the intake manifold. It is a gray, two-wire system situated on the front of the manifold.
The IAT sensor is mounted in the backside of the air cleaner housing for a 1.6 MFI (Multipoint fuel-injection) engine and for a TFI (Throttle body fuel-injection) enging it's located on the right hand side of the engine, mounted in the intake manifold below the throttle body.
rear of engine compartment near the bulkhead
I have heard it is located at the rear of the aircleaner assembly but it needs to be narrowed down from that vaque of answer.
on the air filter housing assy