00WhiteEKy

I have a 95 usdm motor, and a 99 jdm. Is there any parts that I should trade before I drop the 99 jdm motor into my car?? the 95 motor blows smoke, internals junk. But the jdm is in good condition. WHich ECU should I run?? ANd is either tranny better or worse??? Let me know what I should do.

R_yd

if you're using the 95 harness, check: distributor, alternator, injectors. stay obd1

00WhiteEKy

All I have is the 99 gsr harness. My 95 gsr didn't come with a harness. Can I still run the obd-1 ecu with the obd-2 harness?

ndogg

for your JDM engine, you will need a USDM obd2 engine harness. the JDM one won't work on a USDM car. you must also use an obd1 ecu so use your 95 USDM one. if you don't want to buy a new harness, you can modify and use your stock obd1 engine harness but you will need to steal the conectors out of your obd1 gsr engine for the distributor, injectors, and alternator.

out

Katman

here's what you do.
1) Stick with a US GSR ecu....if that's what you have now. the JDM P72 ecu sucks big cameltoe.

2) if you ultimately go with the 99 JDM GSR motor, of course you should know it's an OBD2 engine....meaning it has OBD2 injectors, distributor, 2 02 sensors, and square plug at the alternator and a few extra sensors....which your 95/OBD1 GSR engine does not have. So, what you do is pick up a US 96-01 INTEGRA engine harness.....(you cant use a 96-01 civic harness because it's a 1-piece design that goes all the way to the ecu, unlike EG/DC engine harnesses, where it breaks off at the passenger side shock tower). The 96-01 integra harness will plug n' play onto your EG chassis harness, with about 2 plugs being left unplugged/dormant, which your OBD1/GSR ecu will not look for.

You won't have to rewire anything either.....i think....

slooowDX

96 and up USDM GSR wire harness on the 99 JDM GSR into the EG plug and play, as far as VTEC goes, i think you still have to add wires for that

Katman

nah I don't think he does, since he has a 95 GSR engine in his civ already.

00WhiteEKy

Yes. I have a 99 integra harness. Came with the 99 motor. And its usdm, becasuse its not for a right hand car. But when I ran my 95 gsr motor in my car, the check engine light was on a lot, and i know there is something stupid with the knock sensor. I think I have to wire that yet. But what you saying for me to do is use the 99 gsr harness, and run the obd-1 ecu?? will it through codes? since there are extra sensors, and an extra O2 seonsor, will the obd-1 ecu like that?

00WhiteEKy

oh yeah, and my civic is a VX, so vtec isn't a problem. the vtec wires are there. But I still don't know about the wiring going from the passengers side of the car, to the ecu. I know engine harness is fine, and ecu is fine, but the wiring running into the car is the problem. And im stupid with car wiring.

Katman

Well, you need to wire up the KS then, doofus! that's why you get a check engine light, because something important that the ecu is looking for is ether disconected or not wired up. Either wire it up or get the ecu reprogrammed with the KS disabled --shamelss plug-- I offer ecu reprogramming services by the way ....

Now, if you stick with the 99 GSR engine harness and all of the OBD2 engine ignition parts and injectors, etc; It will work just the same as if you had the OBD1/95 GSR engine harness in your car. When your reuse the OBD1/P72 GSR ecu in your car w/the 99 GSR engine + harness, the OBD1/P72 ecu will NOT throw codes for any of the extra OBD2 parts....because an OBD1 ecu doesn't look for those extra OBD2 sensors, since it's OBD1...

00WhiteEKy

OK. But i have a problem. on the passenger side of the car, there are the 4 plugs. 2 big ones, 1 medium plug, and a smaller plug. the medium plugs don't fit. they are different. my stock harness has 6 wires on that plug, and the gsr harness has 3 wires. What should I do with that?
and would you trade my 95 p72 ecu with one of your reprogrmmed ecu's?? I know you can reprogram a p28 to run my gsr motor, and my p72 is worth more. Let me know what you think.

slooowDX

i used to have a VX and i had the same problem, i just modified my stock wire harness to work w/ the GSR motor, the only way your goong to get the GSR harness to work is replace your whole interior wireharness w/ one from a GSR, at least thats what i was told, much easier to just extend wires on the stock harness


[Modified by slooowDX, 1:09 PM 8/9/2002]

00WhiteEKy

it runs now with the gsr harness with my stock interior harness and im running a obd-1 p72 ecu. How hard would it be to get the interior harness and change that, becasue I sold my stock VX harnes along with the old motor. (that harness was **** anyway) If any one knows if its easy to change the interior, let me know. And if anyone is selling the interior harness. thanx

R_yd

i wouldnt mess w/ the interior wires; it could get messy (?). you said its running now? is that w/o the passenger wires?
i would check the wires and see if the colors are the same and just do some splicing/soldering so you dont have to buy a new harness

00WhiteEKy

yes. it runs now. but 1 plug on the passenger side isn't hooked up. and I know that I don't have wires for the knock sensor in the interior wiring. But yeah, it idels great, but i payed a good price on the motor and i don't want it to go to hell cause of some wiring. know what I mean. once the check engine light goes away, ill be happy, maybe electrical tape over the c.e.l. and then pretend i don't already know that its on. hahaha. I wish someone around my area knew a lot about this kind of stuff. But oh well. theres always a first for everything for me.