I have a JDM H22 in my 93 accord and out of no where the idle started surging. A week later it threw a check engine light. The code was for the CTS ( coolant temp. sensor ) so i changed it out ( the one under the distributor cap ) and it still gives me the same code. i have tested the IAC valve and check all vacuum lines, along with the TPS sensor and i have check the ECU! i cant find any leaks on the intake manifold but i plugged up the 2 holes on the inside of the throttle body and the idle smoothed back out! any help out there? or anyone have similar problems?