on intake manifold
From what I understand looking on forums and such, is the IAT is integrated into the MAP sensor. It should be located on the top of the intake manifold.
A MAF sensor for a Subaru Impreza can cost anywhere from $70 - $150 depending on the type of Impreza you have.
Powertrain Control Module (PCM)
The speed sensor on a 98 Impreza is on the gear box. it is on the driver's side under the bulkhead.
i belive it is on the firewall but dont quote me.
It is on the back left side of the intake, just above the valve cover.
Try changing the fuel filter and the map sensor.
It uses a MAP sensor.It uses a MAP sensor.
The fuel temperature sensor is located inside of the tank in the Subaru Impreza. This is the case for the cars that were made in the 1990's, at least.
built in with MAF sensor
a map sensor is a manifold absolute pressure sensor.