my jdm b16 in my 89 crx with the regular ecu ....the check engine light is on and the led beeps 3 times stops then 4 times stops then 5 times stops then goes back to 3 times stops 4 times stops...etc....can anyone please help

 

Yes they are codes 3 4 and 5

3-> MAP sensor electrical problem

4-> Crank Position Sensor

5-> MAP sensor - mechanical problem

Did this just all of the sudden pop up or did it happen right after you swapped the engine? Also try to obtain a factory service manual for your car which will have ways of troubleshooting these error codes.

 

the check engine light has been on just the first time i checked it...