I have a 1995 accord ex obd1 f22b1 model with the motor replaced with a 2001 accord ex f23a1 motor that has around 90k. It has codes for my tps,map,egr valve. It has a surging idle and 1k to 2k it's is very sluggish at times, it idles very high on start up.i changed my map sensor but code still on for it. I bled all the air out from radiator and still nothing. Very stuck at this point I need some opinions.

 

Which ecu are you running the f23 on?

 

As far as the surging idle check you idel air control valve they usually go bad especially if its been sitting

 

Check the IACV is not sticking/jammed. If reusing the B1 intake, check the FITV is clean/adjusted(check the FAQ at the top of the forum). Otherwise you probably have a vacuum leak(false air) somewhere. Use TB cleaner around gaskets/joints to locate air leaks.
Verify all your vacuum hoses are connected correctly and not leaking.
Verify fasteners are tight/snug.
Verify no air leak around injector O-rings.
Verify all the grounds are properly attached clean and tight. I would suspect this with the various sensor codes.
Verify proper signal voltage to/from the sensors, backprobe and look for constant 5V reference from ECU, continuity for grounds, and signal voltages.

 

I am using the stock ECU from the f22b1 , intake, fuel rail. I'm sure the stock f22b1 ecu can run a f23a1 if I recall. When I turn on the car it revs high for a little Goes down and suddenly shoots up again. I also noticed my climate controls don't work but when I press a setting I hear the flap move. Still need some help with the 4K rpm issues its like a rev limiter right when vtec would kick in