5mge wiring issues...

[sticky667]

well apparently from what i've read, there are 2 versions of the 5mge. my 86 took a dump so i bought a donor car which was a late 84, early 85. swapped everything over and went to hook everything up when i noticed one of the main plugs near the intake manifold didn't match up near the fuse box.

i'm still stuck in the stone age without a digi cam so i'll try to explain as best as possible...

it is a large yellow round plug with about 4 wires. 2 black/red 1 black/yellow that loops itself in the same plug to have 2 different contact points, and 1 black/white.

i think that's it.. this is all from memory since i'm not with the car at the moment.

the donor engine which is '1 gen' has a smaller yellow plug coming from the main wire harness near the intake manifold with only 2 black/red wires. .

am i going to have to remove the engine harness from the original or is there a way around this???

thanks for the help!

edit:: this is in an mx73 ...

[jonra23]

You will probably get best results by using the sensors and actuators that were on your original motor as they will plug straight into loom and be 100% compatible with the ECU that is in the car.

regards
jon

[sticky667]

are there any major differences with the 2 different engines?

[CrUZida]

Use your existing (original) loom.
Swap over any sensors to the new engine from the old engine that don't work with the old loom.

[CrUZida]

Oh, just remembered

You might not have a place to put the knock sensor on the new block.
So you'll get a check engine light when ever you drive.

If you have the full loom and ecu from the new engine, use all that (thats if you don't have a place for the knock sensor).
Just cut and solder plugs.