i have a 1997 accord 2.2L. its not v-tec 4- cylinder . i have custom intake and muffler.
wen i first start my car at a cold start up the idle is at 1. but when it warms-up and i put it in drive and it drops below 500, sometimes 250rpm. it also shakes. when it is at 250rpm, and i press on the gass it dosnt really stall. so is there a way to raise the idle? thx in advance

 

Welcome!
Search for instruction on setting the "BASE" idle. I've posted them a few times around here (maybe in Gen.Tech).