Have some problem after swap.
Engine: 5 gen 1999y. lude H22A5
ECU: 1992y. JDM P13 OBD-1
Wiring: 1993 Del Sol SOHC VTEC OBD-1
O2 sensor: H22A5 original

Problem in code 41 oxygen sensor heating. When test the fuel mix at at low rews it's seems like too lean. Test all wiring. + and - poles in wiring of O2 sensor are OK. Have 100% corect conection to ECU. Change O2 sensors and the same 41 code.

As I know JDM 1992 ECU working with 345cc injectors, we heve original engine 290 cc injectors and there is del sol original fuel pump. Fuel presure regulator is stock too, from H22A5.

Appreciate all information.

Thanks.

 

You prob have a fault in the wiring for the O2 sensor heater then, if you've replaced the sensor and it still threw the code. Did you reset the ECU after replacing the sensor?

 

Like LudeyKrus said check your wiring.

Also, Put the 345cc. The ECU can only trim the pulse with (injectors) so much, so it will lean.

 

Thank's!