fast idle control valve its on the bottom of the throttle body take it off and just run coolant lines to the idle control valve which is on the back of the intake manifold and just cap up the bottom of the throttle body i got a piece of metal and drilled holes in it at the same location as fast idle control valve bolts were and capped it off supposedly this will also give you maybe 1 hp because then hot coolant isnt gon through the throttle body which = lower intake temps and it fixed my car