my freind brought me his car and it has a high idle problem. I though it would be easy but its not throwing any codes.

when i crank it it starts up and bogs a bit than responds back and idle goes to 3200rpm, once its warmed it goes to about 2500rpm. the car never hits lower than 1k or 2k for a fact.
but i dont want to strat throwing parts at it so need some suggestions,

he said it was the map but i just changed it and nothing.

cars a 92 integra with b16a, it ran fine before for years until this

 

check for vacuume leaks, make sure the throttle cable is not binding the throttle, inspecthe the throttle body, adjust the ignition timing and adjust the idle with the screw

 

idle air control valve might be stuck?

 

checked all exept timing, prob last thing ill do lol