I got a b16 civic and i just cleaned out the intake manifold and cleaned the IACV and replaced the thermostat. Now my idle rises up to about 1.75k revs and falls back down to 1k and then rises back up. I did a lil research and supposedly i need to check my radiator hoses for air pockets or possibly clean my FITV. Anything else that it could be(other then those stated and other then vacuum leaks)?? reps for help