Okay S2K members, I need some assistance. I swapped engines on my S2000 after my first engine blew with a turbo setup and decided to go back to stock. I installed a low mileage 2002 s2000 engine in my car and the ordeal was a little complicated due to the car being setup for a turbo. Well now the engine is in and everything works great except for the car surges at idle. I do not have a air pump or ac pump because the car did not have one when I bought it. I've installed the block off plate where the secondary air solenoid was and blocked off the little tube that went to it from the Intake. Should I need to remove anything else? I've cleaned the IAC and also check my pcv valve. One more thing worth mentioning is there is a sensor that I don't know where it goes as it was plugged into the intercooler piping that went into the intake manifold. Any help is appreciated!

Bill

 

Check for vacuum leaks?