Engine Swap from 318i to 320i

[caymanjoe]

Guy's I have recently swapped my 320i engine m50 and trans ( Japan Spec)and placed it into a 318i also Japan Spec. car I had, the issues I'm having now is that the trans does not want to shift, I used all the engine and trans wiring harness and also the shift from the 320i and put it in the 318i car, everything seemed like it was plug and play, but it doesn't want to shift on it's own. The trans from the 320i was rebuilt and worked fine, up untill a guy on a CBR 900 RR cliped the entire side from the front fender to the rear fender at around 85mph. I was told that the 318i wiring is different than the 320i, besides the obvious one is 4 and the other is 6 cycl. Is the fuse box wiring also that much different that it would effect the electronic shifting of the trans?, Also the trans found in the 320i jap spec. seem to be a nissan trans, ( RE5R01A) and the 318i was a GM Trans.Any info on trans wiring harnesses for the 320i or any swap info would helpful.

 

[sesat88]

check ECU... must be 320 too...
check sensor and solenoid connx to tranny
check all wiring....

remember all innards must be from 320 else won't work.