When car is cold, it idles ok as soon as it warms up just a little....rough...stall. I cleaned the IAC,still the same. The car will at least idle when I unplug the IAC, it surges but at least it doesn't shut off. NO CODES are coming up!!!??? 98 Accord 2.3 VTEC

 

have you tried cleaning your egr valve. allows engine to surge when warm.

 

Also you might want to check the TPS, O2, and Timing.

 

ACMECH52, The EGR was the culprit, it was stuck open and causing misfire codes. Thank you!!

 

Nice going Doug!