ok so I'm very very new to working on cars with an ecu. so here goes my issue.

i bought a 2000 civic hatchback (d16y7) car i believe it to be obd2b (someone told me) and i have put in a 1996 coupe d16y8 (obd2a) i used the wiring harness from the d16y7. and the ecu. but it will only crank over now. no fuel pump buzz..

the stock ecu for the d16y7 has 3 plug ins, 2 are off the engine harness and one plugs in from the harness that goes to the fuse panel under the hood then back under the dash.

the d16y8 has 3 ecu plugs but there all off the engine.. does this mean i need to change the fuse panel and all the dash wiring as well?

i bought this car cheap half swapped after being told it just needed to drop in plug in and drive away... "its my reliable car"

please give me some info thanks a lot for your help.

 

bump

 

you need a obd2a to obd2b conversion harness

 

thank you for your response. that will solve the issue of the wire that needs to go into the dash then?...

Thanks for your reply over the holidays, i was worryed no one would see this!

 

you need an obd2b to obd2a conversion harness. that will fix your ecu plug issue.

you still have to do a 3 wire to 2 wire iacv conversion, knock sensor, and vtec solenoid.

 

so you get the 2b to 2a conversion and run the stock 2 b wires? how do yo unwire up the iacv and stuff? also in order to get the vtec to work you need to get a vtec ecu right. theres not something inside you can do to engage it is there?

 

What all did you have to do I'm in the same boat I have a 1999 hatch DX it has a 98 ex motor engine harness and ecu. the fuel pump is wired to ignition car is just a hack job I just got it and I'm trying to do it rite so what all did you do to make your conversion work thank u I'm lost