I have a LS/vtec in my 98 hb.just put it in last weekend,so everything is NEW.when turn the car on it idles fine and with no problem at all,runs strong.but when I'm driving at around 3K rpms n I throw it neutral to slow down for a the traffic light or something the rpms drop real LOW n sometimes it stalls.I've checked everything that I think can cause it ,but its still doing it.the car idles at 800rpms,fuel pressure is set at 38psi.if that helps.any input would appreciated.thanks

 

what exactly am do I check with the set screw?the car idles like normal.help

 

Help .how do I set the set screw???

 

could be a bad IAC but idle when first staring would be rough also...?

maybe its not working properly when your moving, maybe take it off and clean it out with some brakleen or something