i got a 94 dx civic coupe. i did a motor swap and put in a b18 out of a 98 integra. so the motor wiring harness is OBD2 but it pluged into my OBD1 wiring harness on my car and runs fine on an OBD1 ecu but throws a check engine light. the code cays its a 43 which is fuel supply system. i changed everything i could think of. i need to go through DEQ soon so any sugestions help!!!

 

code 43 can also be heated oxygen sensor circuit

 

Moved to proper Civic Forum