dkobryant

Is there an idle air control valve on 2006 GS300? I can't find a diagram anywhere, and I'm wondering if it's possible to clean this, along with the throttle body.

Othic

Idle speed is controlled by the throttle body.

dkobryant

Thanks Othic, do you know whether the ISC is inside of the throttle body? And does it serve the same function as an engine temperature sensor? Is it an external sensor that measures engine coolant temperature? Thanks for any help,

Othic

The throttle body itself is responsible for controlling the amount of air that's gets into the engine at idle. There are no sensors on the throttle body other than the throttle position sensor. The temp sensors are elsewhere on the engine.