Quote:
Originally Posted by Neo187H
Its a system designed the warm up the intake air charge in order to get the car up to operating temperature quicker for emissions testing.
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Really? That doesn't make intuitive sense to me. Intake air temperature isn't going to have a big effect on engine oil/coolant temperature to begin with I don't think... but that aside, the coolant won't start flowing through the throttle bodies until after the thermostat opens, at which point the engine is already warmed up. I could be wrong, but I'm pretty sure it's there to prevent the butterfly valve (throttle plate) in the throttle body from getting stuck (frozen) into place in very cold climates.