Hey guys i have a dilemma here. I recently bought a 1996 civic ex with a 1998 gsr b18c motor. motor was running but had a rod knock so i swapped out the GSR motor for a d16y7 with y8 head. Heres the problem. The d16y7/y8 would idle on the P72-013 (gsr ecu) but would choke out if i gas it. The motor is running too rich. When i swap the ecu with a p2e-a01 (d16y7 ecu) It doesnt start at all. Ive checked all the wiring. What could it be?

 

I dont think you can run a y7 ecu on a vtec motor. The iacv wiring is all different. You will have to convert that back to the configurations of a non vtec motor. I would suggest buying a obd1 p28 ecu with a conversion harness and running that.. I went from a h2b motor to a d16y8 and Im using a stock obd1 p28 ecu. Its runs great wit no check engine lights or emissions to think about for right now

 

http://www.phearable.net/tech/wiring/wiring.96-98_2.jpg

 

thanks just the answer i was looking for. So If i get the p2p ecu which is the OBD2a d16y8 ecu then it should start? I didnt know there was a difference between vtec and non vtec ecu except the vtec part of course...

 

Yes it will start!

Wait read the IACV FIX EXPLAINED part on the website: http://www.phearable.net/tech/wiring/wiring.96-98_2.jpg

Also check your battery to see if its drained or anything.. does it even crank?

*I know that non vtec ecus for B series motors can be used on a vtec B motor but I'm not sure if its the same for single cams.

 

yes motor cranks. I can start it with the p72 ecu but not with the non vtec p2e ecu.

 

You should try it then. If not by this week I can borrow my friends y7 ecu and try it on my car to see if it works. But that might be 3 days later

 

ok Ill look around for a p2p vtec ecu and let you know how it goes. thanks!

 

You're going to have to figure out what to do with the intake air temp sensor and the CKF sensor is a different plug as well.

 

all the plugs are plugged in right.

 

Hey Raidacaipo Can you test out your friends ECU and see if it will start? i dont want to buy the ecu and find out that it wasnt it. Thanks In advance!

 

Yeah Ill try and do it tomorrow if my friend comes over. If not tomorrow then on Friday

 

if you run a p2p which is the for the y8 it's going to look for a knock sensor, also there is obd2a 96-98 and obd2b 99-00 so you'll need an obd2a ecu. Also make sure the rubber oil plug is removed on the y7 block because if you don't vtec will not work, Bauley's mini-me write up explains this.

 

thanks! the knock snsor is already plugged in.