i've beenb looking for a thread that is a subject about this, but cant find one. My car is idleing at about 1750rpms when running warm. is it possibly a vacuum leak, trouble code( engine light is on) my boss said it might have to s do with the close loop cycle. that the computer is reading the sensor wrong. it thinks the car is still runnning cold so it raises the idle.

 

Please see your other thread.