leckey73

I have a 97 honda civic Dx auto and I have a 94 Ls engine with auto tranny and the complete engine harness and computer. I am lost as to what harness to use, the one that came off of the 97 DX or the 94 LS harness with the ECU . On the 97 civic the ecu harness is connected to the engine harnees it is not like the 94 integra where it unplugs from the strut tower and leaves the ecu harness pluged up to the ecu Also the 97 is obdII and the 94 integra is obdI. I think? somebody please help me!!!

slambedcivic

ive gotta 96 LS swap in my 92 CX. i didnt change the harnesses at all. just ran the proper computer to my car. which was obd1. in your car itll be obd2

2lua

try to use your stock harness, but you have to find an obd2 ecu, or buy an obd2 to obd1 conversion. this choice with be wiser. otherwise, you will have a hard time with the obd1 harness.

slambedcivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2lua &raquo;</TD></TR><TR><TD CLASS="quote">try to use your stock harness, but you have to find an obd2 ecu, or buy an obd2 to obd1 conversion. this choice with be wiser. otherwise, you will have a hard time with the obd1 harness. </TD></TR></TABLE>

how so? mine plugged right in, and its running fine and has been for over a month now. im running a 96 LS in a 92 Civic. with and OBD1 ecu... i changed NOTHING. just the ecu

97civicdx

Your 92 civic is obd1, 96 and up civics are obd2. Different ballgame..... And the 6th gen civics dont have the plugs on the inner fender like the 5th gen civics.

freakin_eLRoD

use your obd2 harness. I did a 95 ls swap in my 96 ex civic and I used my stock obd2 harness and an obd2-obd1 jumper harness with an obd1 p75. You will have to rewire your iacv (since you have a dx) and katman on this board has a pin out of how to do it.

slambedcivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97civicdx &raquo;</TD></TR><TR><TD CLASS="quote">Your 92 civic is obd1, 96 and up civics are obd2. Different ballgame..... And the 6th gen civics dont have the plugs on the inner fender like the 5th gen civics.</TD></TR></TABLE>
so the LS swap isnt a direct bolt in in the 96+ civics?

freakin_eLRoD

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slambedcivic &raquo;</TD></TR><TR><TD CLASS="quote">
so the LS swap isnt a direct bolt in in the 96+ civics? </TD></TR></TABLE>

as long as you have the 99-00 si rear tranny bracket, and upper driver side bracket, it wil be a direct bolt in.

slambedcivic

then why cant you plug it in as well, and run the obd2 ecu?

leckey73

as long as you have the 99-00 si rear tranny bracket, and upper driver side bracket, it wil be a direct bolt in.

Does that rear mount bracket apply to an automatic transmission also?

freakin_eLRoD

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slambedcivic &raquo;</TD></TR><TR><TD CLASS="quote">then why cant you plug it in as well, and run the obd2 ecu?</TD></TR></TABLE>

You can plug in an obd2 ecu but heres where you run into problems. 96-up motors have a crank fluctuation sensor and a secondary o2 sensor, while obd1 motors do not. If you were to run an obd2 ecu on and obd1 motor without those sensors hooked up, you'll be in limp mode. I'm sure the car will run, but it'll probably run like ***.

slambedcivic

i see, thank you for the patience and explaining it. most people would just give up and call me a moron.