Okay i have a problem. i swapped my d16y7 out of my 99 civic. in its place i put a Z6. My problem is that the engine starts but idles rough after it warms up. It aslo misfires. I have done the following:

ckp bypass trick
3 wire iacv to 2 wire iacv
bled the coolant
checked spark plugs and wires


I think that maybe i didnt connect all the vacuum lines right. As for the misfireing, im going to check my timing. Could someone who has done this swap please post pics of where all the vac lines are connected. all suggestions are apreciated. thanx in advance

 

If a vacuum line was not connected, then the idle speed would be high. Are the plug wires and fuel injector connectors plugged in the right order?

I think you should inspect the cap and rotor, and the mechanical and ignition timing.

Is the CEL ON?

 

yes the plug wires are pluged in right. ( number one bieng closest to crank pulley ) as for the injector plugs i am not sure. as for the distributor it was recently rebuilt. and the cel is on .

 

What are the codes?

 

they were p1509 idle air control valve circuit fault 2, and the first o2 sensor. i replaced the o2 sensor.

 

Others should be able to tell you whether you need a different ECU.

Your IACV wiring seems to be wrong as indicated by the code.

Did replacing the O2 sensor fix the code?

Here's the plug wire order in the distributor cap:

 

OK ALL THE SPARK PLUGS WIRES PLUGED IN CORRECTLY. AND THE O2 SENSOR FIXED ONE CODE BUT I STILL THE P1509 CODE FOR THE IACV. I ALSO HAVE A P28 WITH A JUMPER HARNESS BUT WEN I CONNECT IT IT STARTS AND RUNS BUT DIES AFTER A FEW SECONDS. WHY WOULD IT DO THAT??? COME ON GUYS I NEED HELP!!!!

 

bump