Ok let's see if I can clear this up
I have a

99 civic body with the ecu.

98 civic engine with harness

Now what do I need or do to make it work ?

Ps can I just by a harness converter so I can use the 98 harness with the 99 ecu

Hopefully this clears it up thanks

 

You don't need a harness(unless obd1 engine obd2 era car) but what engine are we talking about. 96 up is obd2 so you'll be fine in that sense.

 

Assuming they are both the same engines (D16y7) you shouldn't need anything. If memory serves, the 96-99 ECU's are the same. It's been awhile since I've done a straight motor swap in a Civic using the same engine.

 

no a jumper harness will not work. your 98 engine harness will not plug into your 99 dash harness. I'm thinking you could just get a 99 harness and plug it into the 98 engine. that way it'll plug into the dash harness and the ecu.

taking that it's the stock motor for the car

 

He hasn't said what the shell is DX(with a d16y7) or is it an si(w/b16)

 

assuming its not an Si. cause I don't think he'd put a y7 or y8 into an Si shell

 

True, he did not. I just assumed he was swapping the same model engine from one to the other.

 

Not a si and the car is a obd2b and the engine is a obd2a it's a d16 that's all I know

 

And the 99 has no badge on it so I don't know the sub model

 

it's most likley a d-series then. unless an Si(you siad no) it's got a D16

 

Well the engine is a 1.6 from a civic dx hb so isn't it a d16?

 

Do you still have the engine out of the 99? The engine code will be stamped right on it.

 

No just the shell

 

ya it's d16 you'r right looks like this right

 

Yes. A DX hatch has a D16y7. But since we don't know what model the 99 shell is, it could make a difference. Assuming you're in the USA, if it's a 99 DX it would have also had a D16Y7 but if it's an EX (si in Canada) it would have had a y8 and if it's an si (SiR in Canada) it would have had a B16. Both the y8 and B16 are vtec engines and would require you to change the ECU as well as harnesses, etc. even the tranny, axles, etc if it's an si shell.

 

Ya bud just like that

 

I'm from canada.the 99 has pw doors pw windows pw mirrors

 

and if you want to know exactly WHAT d16 it is look where i circled in red on you'r engine.

 

Thanks bud I will try and see what it is

 

okay the motor is a d16y7

is the 99 shell a hatchback? coupe? sedan? if coupe or sedan. does it have a sunroof?

 

Sedan no sunroof

 

okay then the shell is either a dx or an lx. either way the original motor was a d16y7. same one you have now.

get a 99 d16y7 harness. you'll be good to go

 

DX sedan it is. Same engine from one to the other. As the other guy said its just the dash harness that isn't compatable. It's been awhile so I'll take his word for it.

 

Ok so 99 harness it is then. I will look if I can see what d16 it is hopefully it's a d16y7

 

Well guy's thanks a lot for the help felling a little better about the swap now lol