Hi everyone, this is my first post in here, my car is 90 accord exi CB, there is a problem in my car , is about the REV, when i start the engine , whenever cold or hot, the rev will move around - 1000rpm to 2500rmp,never stop, i've change the THROTTLE BODY and IDLE sensor already, some said i need a new fuel filter? do u guys got any more idea for me? thx a lot