When I bought my 92 prelude si it had a motor swap done to it.Same motor though.H23.The car idles at about 1500 rpms when it is cold and when it starts to warm up after about 5 mins. the idle will jump between 1000 rpms and 2500 rpms.The radiator was cracked so I replace that and the thermostat and then bled all of the air out of the radiator.It still runs the same.I was told to check and see if my idle control valve was bad.Does anyone else lnow what it could be?Can anyone help me on this?I want to get my car running normal again.Thanks for any help.

 

http://www.92lude.com

try that mod....