i dropped a b18a1 into my 90 base model hatch. had to switch wiring from dpfi-mpfi. i stayed OBD0 w/ everything, doner harness was from a 90 integra. i used a remanufactured OBD0 integra ls dizzy and an OBD0 pr4 5 speed integra ls ecu. everything works as it should (minus the motor running terribly) but it is throwing a code 4 which is for the crankshaft position sensor. It idles up and down between 1900 and 2200 and when driving/reving it WILL NOT go past 3000. when it hits 3000 it sputters (as though it were hitting rev limiter). its come to my attention that other people have had the same problem but i cant get anything on how it was solved. i DESPERATELY need some help with this. ive tried switching out dizzy's to a 91 civic si but the code still came up and it still ran the same. i tried switching ecu's to one of 3 pr4 ecus that i have and the problem was still there. please someone help me with this, the motor has been rebuilt and i dont want to mess anything up and i want to break it in properly. thanks..

 

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