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Originally Posted by sv51macross
-What is the electronic component the coolant passes through right next to the secondary fuel rail?
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Non-turbo, right?
Most likely the ACV cluster - it's for emissions.
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-Why is the coolant routed up to the throttle body? AWS?
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Yes, it's the cold start system.
Through the use of a wax pellet (that melts), it bumps up idle speed by propping the throttle plates more open than normal at idle.
-Ted