I have a 1992 accord that has a hunting idle but also has CEL codes 43 and 01. I have cleaned the IACV, FICV and throttle body, but hunting idle issue remains. No issues with starting though

. Purge air from the cooling system, by opening the bleeder bolt and filling the radiator with coolant until it comes out the hole.

. Fast Idle Thermo Valve--remove cover and ensure valve seat is tight.

OK.. bleed the coolant system.while I was at UT replace all hoses,thermostat, coolant temp sensor and cooling fan sensor and fuel filter. Hunting idle is gone but when the car warms up the idle runs up to about 2500 rpms whereas when its first started its at 1000 rpms