90 Prelude SI Surging Problem

Thanks for the quick response to my question. I bled the cooling system once the car was running again. I did change the intake gasket when I installed the new cylinder head. Also cleaned the intake up well. I do have a spare idle air control valve from the old intake and will try that to see if that takes care of the problem. I'll let you know what happens once I change the iacv.

Hello Bruce, I changed the eacv on my lude today and it didn't solve the problem. May be due to not having enough coolent in the system at the time. I then changed the fast idle valve and air boost valve. I cleaned all the valves before replacing them. That brought my idle down, once warmed up a little, and the surging started again at a lower rpm. I gave the motor time to get hot so the thermostat would open and than topped the cooling system off with anti freeze. The surging stopped and now I have my normal idle and it's smooth. Not sure which piece solved the problem but so far so good. I'll know better tomorrow when I run it. I just hope the doors don't fall off next. I also changed the power rack about two months ago and the motor surged until I topped off the power steering fluid. Guess the ecu on these cars are finiky.
Again, thanks for all your help.

Hello Bruce, I have to update this post in the event another Honda owner has the same problem that I had. My lude started to surge again so I double checked the cooling system to make sure I didn't have any air trapped. It seems I didn't purge the cooling system well enough the first time I did it. There was a lot of trapped air in the system. Once it was purged everything worked perfect. The idle dropped down and there is no more surging.
Thanks again for your help.