My 92 honda accord surges at idle it is steady, rev up, cut out, rev up, cut out

any vacuum leaks?idle air control valve ever been removed and cleaned?bad to get carbon build-up on worm gear inside it?fast idle air valve ever been cleaned/adjusted?when was last good tune up?plugs,wires,cap,rotor,pcv valve,air filter? REPLY BACK FOR IMPORTANT INFO.

This is a common problem on this car. First cause to check is air in the cooling system, or low coolant. Next on the checklist is the IAC. It's better to replace it, because trying to clean it often makes the problem worse. Next is the Fast Idle Valve. The beehive valve inside can loosen, and you have to spin/screw it back down with two flat head screwdrivers. Not too tight, just snug, and then back it off slightly.