[NWSub]

My 99 been acting funny in that the idle is staying about 800-900 rpm are idle. used to be lower than that. I have done the checks for vacuum leaks and other trouble shooting. Now i am thinking it might be the coolant sensor acting up.

So how do I check if its working right?

 

[Osei]

The leftmost of the 2 pin connector is #1.
With ignition switch in the on position voltage sb more than 4, but less than 10V.
With the switch in the off position, resistance from pin 2 to ground sb more than 5 ohms..
ref to fsm:
www.main.experiencetherave.com - /subaru_manual_scans/

Hope this helps.

O.