Wiring Harness Compatibility?

[MarcVIII]

I have a 97 GsT Spyder that has wiring harness issues as it won't start and all the electronics have been confirmed good. I have a 97 TSI AWD Atx parts car, my question is whether the harness is the same and would work?

I'm leaning on replacing the whole harness to piecing the faulty wires as I'm not too electrical savvy on cars and I do have this potential spare that I know worked when the car ran (blown motor as of now).

If you want the back story to my issue, here's the threads:

http://www.dsmtuners.com/forums/bolt-tech/329343-car-still-wont-start.html

http://www.dsmtuners.com/forums/pro...art-electrical-trouble-codes-p0340-p0105.html

 

[justinschmiidt]

If the engine Harness is from one 1997 4g63 Turbo car, to the next 1997 4g63 Turbo car, transmission is not a factor.
Yes it will work, .. But are you sure it isnt an ECU related problem?

 

[MarcVIII]

If the engine Harness is from one 1997 4g63 Turbo car, to the next 1997 4g63 Turbo car, transmission is not a factor.
Yes it will work, .. But are you sure it isnt an ECU related problem?

I bought a 2nd ECU thinking it was that as well. Same problem. The Master Mitsu Tech tried every electronic component and even short-pathing around the ignition cylinder and direct current and still nothing.

I'll start pulling the engine harness from my parts car.

 

[bigf4]

Good luck, i have gone down that road. It took me 2full days and alot of rewiring my old harness/eliminating wires i dont need.

 

[MarcVIII]

Supposedly I have frayed wires that have some damage from going through the fire wall and rubbing. I'm just getting this back from a Mitsu dealer. $300+ diagnosis and this was the last thing looked at. Good tech working on it, but its always the very last thing you look at after you've exhausted every possible electronic box or plug on there.

I may just replace the handful of wires, apply rubber undercoat around my apparent problematic firewall inlet, tape everything and wire loom them, and see if that rectifies it.

Something to do this weekend I guess. After that I think I'm selling this cause I picked up my dream car -a modded 95 Stealth RT Twinturbo AWD, already has 550hp. And I think having only ONE fun, summer only nice days car is practical.

This Eclipse has been WAY more solid a car than my 97 TSi AWD atx I had though. Even with this SNAFU.

I might try to find an atx FWD 2g Talon turbo to do an AWD swap on since I still have that car for parts. I'd like to stay AWD all season...

 

[MarcVIII]

So it seems a different ECU equals a different wiring harness. My parts Talon has different connectors that aren't on the Eclipse. They had different part number ECUs, heck even the casings looked different.

So I assume it would work, but I'd have to eliminate and piece together some parts from my old harness to make the parts harness possibly work. The atx Talon wiring harness has a few more connectors. Everything colorwise still matches up, just some extra wiring. My guess is trans probes, ABS system, etc.

I'm considering getting an ECU-matching main wiring harness.

 

[MarcVIII]

I changed the harness with a good one. I get fuel pump priming and relays are clicking. I'm not getting any spark. Progress at least...

I've asked previously and was suggested to change the ignition control module and the automatic shut down relay. I tried changing the ignition control module, but am unsure where the automatic shut down relay is located.

Changed out ECUs as well.

The other possibility is my camshaft and crankshaft sensor are out of sync. How can I check/test that?