clean2draccord

I'm going to be using a P28 w/ Uberdata setup with my turbo Accord. I've been hearing about a 2 wire IACV converion that will need to be done.

Has anyone attempted this? If you can give me some info that would be great. Write-ups, etc.

notoriousB?

stinker504

I've been looking for a write up for the longest time. People have told me there were adapter plates that can convert the 3 wire to 2 wires. It's been done and hopefully this thread will finally tell us how to do it.

notoriousB

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by clean2draccord &raquo;</TD></TR><TR><TD CLASS="quote">notoriousB?</TD></TR></TABLE>

lol! This conversion is part of the reason I chose to run the AEM EMS - I have to convert back to stock ECU to pass emissions and didn't want to screw around with misc. sensors every time.

From my reading (the wiring colors is for civics/tegs - the colors may not match on an F23, but I think they probably will):

<u>3 wire --&gt; 2 wire</u>
yel/blk --&gt; grn/blk
orange - left hanging
blk/blue --&gt; black

To avoid using an adapter plate (fabbing one up with the motor in the car will be a BITCH) you could obtain an F22 intake manifold & IACV and use that, it will bolt up to the F23 head no problem.

Then you just have to make sure that the 2 IACV wires are pinned through your adapter harness to the correct spot to match up with the P28 ECU's IACV inputs.

HTH -B

clean2draccord

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by notoriousB &raquo;</TD></TR><TR><TD CLASS="quote">

To avoid using an adapter plate (fabbing one up with the motor in the car will be a BITCH) you could obtain an F22 intake manifold & IACV and use that, it will bolt up to the F23 head no problem.

Then you just have to make sure that the 2 IACV wires are pinned through your adapter harness to the correct spot to match up with the P28 ECU's IACV inputs.

</TD></TR></TABLE>

What adapter plate?

notoriousB

the one you will need to fabricate to mount a 2-wire IACV on the back of your IM that accepts a 3-wire IACV. it doesn't just bolt up.

PrecisionH23a

So I have a wierd situation here.... I'm running into this problem but the f23a1 motor has a 2 wire IACV unlike the 3 wire on other 6th gens for some reason.

I ran the + wire straight to the obd1 IACV wire on the ecu side and grounded the - wire to the chassis. The motor seems to do a lot better since it will not rev from 1000-4000rpms but it still bounces from 1000-1600 and will throw the CEL unless I disable it in Hondata.

Any of you guys run into a 2 wire IACV on a '99 accord before?