Question for those that put a OBD2 SOHC engine into a EG civic?
04-17-2003, 08:58 AM
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Question for those that put a OBD2 SOHC engine into a EG civic?
What IACV did you use? All OBD2 SOCH engine uses a 3 wire IACV while the OBD1 uses a 2 wire IACV. How did you guys manage to get around this? What ECU are you guys running? Thanks.
EDIT: I will be running everything OBD1 (ECU, harness). Only thing that will be OBD2 is the engine itself.
Modified by eg-six at 10:21 AM 4/17/2003
EDIT: I will be running everything OBD1 (ECU, harness). Only thing that will be OBD2 is the engine itself.
Modified by eg-six at 10:21 AM 4/17/2003
04-17-2003, 09:10 AM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (Spade)
But i will be using a OBD1 ECU.....how will running more wires help?
04-17-2003, 09:13 AM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (eg-six)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eg-six »</TD></TR><TR><TD CLASS="quote">But i will be using a OBD1 ECU.....how will running more wires help? </TD></TR></TABLE>
See u didn't tell me that. Looking into it.
See u didn't tell me that. Looking into it.
04-17-2003, 09:14 AM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (Spade)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spade »</TD></TR><TR><TD CLASS="quote">
See u didn't tell me that. Looking into it.</TD></TR></TABLE>
Sorry.....my bad!
Thanks for looking....pretty stumped about this one. Would like to solve this before taking the motor out.
See u didn't tell me that. Looking into it.</TD></TR></TABLE>
Sorry.....my bad!
Thanks for looking....pretty stumped about this one. Would like to solve this before taking the motor out.
04-17-2003, 09:16 AM
#6
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (eg-six)
I agree.....it's always nice to knwo what your getting into before you get into it.
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04-17-2003, 09:21 AM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (purek9hybrid)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by purek9hybrid »</TD></TR><TR><TD CLASS="quote">So I take it your going to run an OBDI wiring harness??</TD></TR></TABLE>
Yes, OBD1 engine harness and ECU.
Yes, OBD1 engine harness and ECU.
04-17-2003, 09:52 AM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (tonesdef)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tonesdef »</TD></TR><TR><TD CLASS="quote">why don't you just stick with a obd1 engine. Why make things harder for your self. 
</TD></TR></TABLE>
Please, if you have nothing to say, keep them to yourself. If you look at my sig, you will know why i am doing this!
</TD></TR></TABLE>Please, if you have nothing to say, keep them to yourself. If you look at my sig, you will know why i am doing this!
04-17-2003, 10:45 AM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (Spade)
i have a 95 civic. i threw in a 96 civic dx (d16y7) engine in b/c my d15 crapped out. anywho. i used MY dx harness (obd1) and everything plugged in, only thing was that i used my old intake manifold. the Y7 has that weird looking one, so i used my "ex/si" looking one.... just a thought... if u have a Y8... all i can say is... uhh make something happen man. sorry.... hope i was of some help.
04-17-2003, 11:09 AM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (Spade)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spade »</TD></TR><TR><TD CLASS="quote">OBD2 auto IACVs use 3 wires
OBD2 Manual IAVCs use 2 wires.</TD></TR></TABLE>
Which wire is the extra wire for Auto?
OBD2 Manual IAVCs use 2 wires.</TD></TR></TABLE>
Which wire is the extra wire for Auto?
04-17-2003, 11:10 AM
#15
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (eg-six)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eg-six »</TD></TR><TR><TD CLASS="quote">
Which wire is the extra wire for Auto? </TD></TR></TABLE>
Still researching that. Going to look at my own ECU wiring during lunch.
Will be able to answer in about an hour/hour and a half.
Which wire is the extra wire for Auto? </TD></TR></TABLE>
Still researching that. Going to look at my own ECU wiring during lunch.
Will be able to answer in about an hour/hour and a half.
04-17-2003, 11:12 AM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (Spade)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spade »</TD></TR><TR><TD CLASS="quote">
Still researching that. Going to look at my own ECU wiring during lunch.
Will be able to answer in about an hour/hour and a half.</TD></TR></TABLE>
Thanks man! Try to get me the colour of wire if you can. Here, have a
on me! 
Thanks again.
Still researching that. Going to look at my own ECU wiring during lunch.
Will be able to answer in about an hour/hour and a half.</TD></TR></TABLE>
Thanks man! Try to get me the colour of wire if you can. Here, have a
on me! Thanks again.
04-17-2003, 12:33 PM
#17
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (eg-six)
Okay. 3 wire IACVs have a Orange, Yellow/Black and Black/Blue.
2 wires have a Black/Blue and Yellow/Black.
On Manual OBDII ECU's the Black/Blue goes to A12 and the Yellow/Black goes to the main relay.
On Auto OBDII ECU's the Orange goes to A13, the Black/Blue goes to A14, and the Yellow/Black goes to the main relay.
The only difference is that Auto IACVs have a positive and a negative vaccum while Manuals only have positive.
2 wires have a Black/Blue and Yellow/Black.
On Manual OBDII ECU's the Black/Blue goes to A12 and the Yellow/Black goes to the main relay.
On Auto OBDII ECU's the Orange goes to A13, the Black/Blue goes to A14, and the Yellow/Black goes to the main relay.
The only difference is that Auto IACVs have a positive and a negative vaccum while Manuals only have positive.
04-17-2003, 12:51 PM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (Spade)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spade »</TD></TR><TR><TD CLASS="quote">Okay. 3 wire IACVs have a Orange, Yellow/Black and Black/Blue.
2 wires have a Black/Blue and Yellow/Black.
On Manual OBDII ECU's the Black/Blue goes to A12 and the Yellow/Black goes to the main relay.
On Auto OBDII ECU's the Orange goes to A13, the Black/Blue goes to A14, and the Yellow/Black goes to the main relay.
The only difference is that Auto IACVs have a positive and a negative vaccum while Manuals only have positive.</TD></TR></TABLE>
Thanks for the info man. But the problem still exist.....i only have one pin out on the OBD1 ECU (A9, IACV) where as a OBD2b ECU has a (B23) IACV, and a (B6) IACV P. I don't think you can run a OBD2 IACV via a OBD1 ECU.
Modified by eg-six at 2:06 PM 4/17/2003
2 wires have a Black/Blue and Yellow/Black.
On Manual OBDII ECU's the Black/Blue goes to A12 and the Yellow/Black goes to the main relay.
On Auto OBDII ECU's the Orange goes to A13, the Black/Blue goes to A14, and the Yellow/Black goes to the main relay.
The only difference is that Auto IACVs have a positive and a negative vaccum while Manuals only have positive.</TD></TR></TABLE>
Thanks for the info man. But the problem still exist.....i only have one pin out on the OBD1 ECU (A9, IACV) where as a OBD2b ECU has a (B23) IACV, and a (B6) IACV P. I don't think you can run a OBD2 IACV via a OBD1 ECU.
Modified by eg-six at 2:06 PM 4/17/2003
04-17-2003, 01:11 PM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (nerdsports)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nerdsports »</TD></TR><TR><TD CLASS="quote">i have a 95 civic. i threw in a 96 civic dx (d16y7) engine in b/c my d15 crapped out. anywho. i used MY dx harness (obd1) and everything plugged in, only thing was that i used my old intake manifold. the Y7 has that weird looking one, so i used my "ex/si" looking one.... just a thought... if u have a Y8... all i can say is... uhh make something happen man. sorry.... hope i was of some help.</TD></TR></TABLE>
Thanks for the info....alot of research has all pointed that i will need a OBD1 intake manifold in order for this thing to work....i guess the hunt is on. Thanks guys for all the help! Cheers!
Thanks for the info....alot of research has all pointed that i will need a OBD1 intake manifold in order for this thing to work....i guess the hunt is on. Thanks guys for all the help! Cheers!
04-17-2003, 02:53 PM
#21
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eg i was just wondering, is this a y8 obd2 engine you swapped in? Because if it is and its 3 wire, you have an engine from an auto as spade said. But all y7's have 3 wire also. So maybe a manual IM from a y8 would work for him?
04-17-2003, 03:08 PM
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Re: Question for those that put a OBD2 SOHC engine into a EG civic? (Spade)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spade »</TD></TR><TR><TD CLASS="quote">Just a Manual IACV and not an Automatic.
That's the difference.</TD></TR></TABLE>
Sorry....but i don't get what you are trying to say. But if you look at the ECU, there is actually a pin for IACV P which i don't have on the OBD1 ECU.
That's the difference.</TD></TR></TABLE>
Sorry....but i don't get what you are trying to say. But if you look at the ECU, there is actually a pin for IACV P which i don't have on the OBD1 ECU.
04-17-2003, 03:09 PM
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Re: (brooksto)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by brooksto »</TD></TR><TR><TD CLASS="quote">eg i was just wondering, is this a y8 obd2 engine you swapped in? Because if it is and its 3 wire, you have an engine from an auto as spade said. But all y7's have 3 wire also. So maybe a manual IM from a y8 would work for him?</TD></TR></TABLE>
I am doing a manual Y7 into a EG chassis hence i have 3 wires for the IACV where as the EG only has 2.
I am doing a manual Y7 into a EG chassis hence i have 3 wires for the IACV where as the EG only has 2.
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