the problem is the engine stalls randomly. then i g2 let it sit for a few minutes til i can start it back up agen. when its cold the idle kinda jumps up or down sometimes then it will stall....
the engine is obd2 jdm b18c.. which was put on 3 days ago. we just changed the igniter thinking its the problem coz there wasnt a spark b4. im still using the stock rad. but i dont notice the temp high enough to cause a stall.

 

There are two things that control the idle wich are notorious for going bad. One is the Idle Air Control Valve, wich usually causes low idle when warm; and the Fast Idle Control Valve, wich raises the idle to 1500 when cold. I would check those first.

 

are those enough 2 stall the engine tho? when its cold it idles alrights then it would just just drop down instantly and stall. but it stalls no matter what the temp is .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tEaM-IneRtia &raquo;</TD></TR><TR><TD CLASS="quote">are those enough 2 stall the engine tho? when its cold it idles alrights then it would just just drop down instantly and stall. but it stalls no matter what the temp is .</TD></TR></TABLE>

Yes they are. If the revs drop quick, and either of those valves can't react quickly enough, your car can stall. But if it's fine when it's cold, and stalls / idles badly afterwards, it's most likely the IACV. Either way, do not adjust your idle screw until you find you the cause of the problem.

 

Iac valve ,fuel ????,Igniter

 

thanx 4 da info. i figured it out. loose wiring going 2 the dizzy,