93 impreza coolant temperature sensor location

[remcow]

Hi All
My daughter's car's check engine light recently came on and the next
morning it became hard starting. Once it runs, it seems to run fine.
Checking by mating the two black diagnostics plugs, the ECU flashes
code 21, which - according to all posts - is the coolant temperature
sensor.

I did find that the left fan connector was off (probably due to
'service' having done). Replugged it, but the condition still exists.
The fans also immediately come on.

Could anyone tell me where this sensor is located?

Thanks!
Remco

 

[remcow]

Hello again
After some looking around, it seems like this sensor is located on the
intake manifold, near where the coolant enters the engine - is that
right? I see two sensors: one with one connection, one with two
connections.

I take it that it must be the two wire sensor? This reads around 1K at
70 degrees F. If that is the sensor, is that about right?

Thanks in advance for any light you might shed on this.

Remco