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will obd2 engine harness work on obd1 engine?

Old 10-11-2002, 09:37 AM
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Default will obd2 engine harness work on obd1 engine?

Ok

I have a 95 gsr. Putting in a 95 jdm gsr engine with cut harness. I have a obd2 engine harness (was sold to me as obd1 from some ***** online )

So can I just solder the dist,injectors,alt ,plugs on the obd2 harness without throwing codes?

I know the easiest thing is to just find a obd1 harness plug it in and go, but VERY hard to find in my area, van BC.

Please help!!!

Oh yeah, lost password not a newb

Old 10-11-2002, 09:47 AM
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Default Re: will obd2 engine harness work on obd1 engine? (lost password)

ya you can.

just need to relocate some pin-outs of the gsr ecu if you are using the obd1 p72 such has IAB's, o2 (i think), and everything you mentioned above.
Old 10-11-2002, 09:57 AM
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Default Re: will obd2 engine harness work on obd1 engine? (poison)

Thanks for the fast reply.

Yeah, im using a obd1 p72.

Everything is obd1 except the damn engine harness.

Any links for a how too?

I have the helms for my 95 but thats it.




[Modified by lost password, 7:00 PM 10/11/2002]
Old 10-11-2002, 12:26 PM
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Default Re: will obd2 engine harness work on obd1 engine? (lost password)

here ya go

http://tech2.hybridgarage.com/ecu.php?ecutype=p72_obd1

that is the p72 obd1 pinouts. you can match with colors of wires and pin outs and such to match them up.

there isn't much work, but a few wires need to be changed.
Old 10-11-2002, 12:56 PM
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Default Re: will obd2 engine harness work on obd1 engine? (poison)

thanks

Still not quite following you though. As far as the whole ecu pinout thing.

The dist wires are diff colors too. I've been looking for an obd1 dist to obd2 harness schematic or at least a obd2 dist schematic to cross reference with my helms..........................

ok did some research on the hybrid board. Got the dist ,alt, inj thing handled I think.

I just need someone to help me out on the pinout swapping thing im a little confused


[Modified by lost password, 11:31 PM 10/11/2002]


[Modified by lost password, 1:56 AM 10/12/2002]
Old 10-12-2002, 10:09 AM
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Default Re: will obd2 engine harness work on obd1 engine? (lost password)

hmm.

so what is it exactly ya need? the obd1 or obd2 pinouts/colors of the dist?
Old 10-13-2002, 09:33 AM
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Default Re: will obd2 engine harness work on obd1 engine? (poison)

buy my obd-1 engine harness email me at raymmo@comcast.net
Old 10-14-2002, 11:55 AM
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Default Re: will obd2 engine harness work on obd1 engine? (poison)

I need to know the dist wiring and what the obd2 pinouts are. So I can figure out what to change.

Also are you sure this will work?

thanks for all your help by the way
Old 10-14-2002, 12:33 PM
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Default Re: will obd2 engine harness work on obd1 engine? (lost password)

I need to know the dist wiring and what the obd2 pinouts are. So I can figure out what to change.

Also are you sure this will work?

thanks for all your help by the way
yes it'll work.

you can easily do it yourself
Old 10-14-2002, 01:05 PM
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Default Re: will obd2 engine harness work on obd1 engine? (poison)

any idea where to find out how to rewire dist to obd2 harness? Wires are diff colors.

Old 10-16-2002, 03:45 PM
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Default Re: will obd2 engine harness work on obd1 engine? (poison)

ok got all the plugs swaped over. Still cant find the obd2 wire schematic anywhere.
I ordered the 96+ supplement for my helms but I need the info now.

One of the plugs on the passenger side shocktower wont plug into the obd2 harness. The car side obd1 plug has 2 wires yel/blk and red (Evap purge solenoid maybe?). The engine harness plug has 3 wires diff colors.

If someone has the obd2 helms and can give me the obd2 wire colors/pinouts for the engine harness that would be perfect.


[Modified by lost password, 12:46 AM 10/17/2002]


[Modified by lost password, 1:05 AM 10/17/2002]


[Modified by lost password, 5:56 AM 10/17/2002]
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