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Psychowrath
08-16-2013, 12:41 PM
Auto to manual
Hello all I have a 1990 gt manual and have decided to purchase a 1992 gt auto with a more sound body now I know I have everything needed for the swap I was just wandering if anyone has done something similar and if so any tips? The 1992 is a convertible were the 1990 is a notchback I'm willing to completely strip the 1990 in order to make this project work now my biggest question I have is what kind of wiring issues will I run into the Pedal and installation is no issue as I have completed this before is there any real difference between the 1990 and 1992
Will this be a simple cut a hole and unbolt then rebolt procedure using my 90 as I have discovered all plugs in the ninty are present even if it doesn't have the feature so would the harness be the same? I know it's very close to the same out of a 93 manual I'm just not so sure as to the auto part never owned an auto myself therefore never seen the auto harness

thanks for any help

METDeath
08-16-2013, 01:52 PM
The ECUs are different between cars (completely different plugs), also with the convertible there is some additional wiring for the rear window motors, and possibly the sound system if it has 8 speakers vs the normal 4 or 6.

Psychowrath
08-16-2013, 02:02 PM
Hmm is there a way to splice engine bay to body?

Psychowrath
08-16-2013, 02:13 PM
Hmm is there a way to splice engine bay to body? Is there any way around it as I've heard of it being done

Psychowrath
08-16-2013, 02:34 PM
What about using the computer out of a 93 five speed convert?

Psychowrath
08-16-2013, 02:46 PM
Or the entire engine bay side of the harness with it as I have this at my disposal as well

Doowstados
08-18-2013, 07:26 AM
I don't know anything about the ECU issues but if you have questions related to anything else related to this swap I can help, I finished it a few months ago.

fussellbug
08-18-2013, 01:08 PM
The auto ECU will work fine with the manual transmission. You will have to do some wiring which is explained in this sticky'd post:
http://www.celicatech.com/forums/showthread.php?51724-Auto-to-Manual-Transmission-Swap-How-To&highlight=auto+to+manual

You can find another write-up for the auto to manual swap here:
http://www.toyotacelicaonline.com/atomconv1.htm

Doowstados
08-18-2013, 02:47 PM
The auto ECU will work fine with the manual transmission. You will have to do some wiring which is explained in this sticky'd post:
http://www.celicatech.com/forums/showthread.php?51724-Auto-to-Manual-Transmission-Swap-How-To&highlight=auto+to+manual

You can find another write-up for the auto to manual swap here:
http://www.toyotacelicaonline.com/atomconv1.htm

I figured this was the case, he shouldn't need to mess with the body harness at all, and the engine harness should be the same for that section at least.

The wiring is really simple and most of it isn't necessary (clutch safety for example, just always have your foot on the clutch when you start the car).

Flux
09-07-2013, 09:28 PM
Use the ecu you have in the car already.
I did my auto to 5sp swap and used my auto ecu, still runs great and no codes.
There is a big grey plug with 2 wires on the passenger side tucked behind the strut tower, one of those wires, I believe the black with white strip needs to go into the empty slot on the plug.
This will make the car only start when the clutch is pressed in.

Other than that, you'll just need to run new trans lines, install the clutch pedal and master, run your hardline to the slave cyl, swap over your 5sp trans mount, get your clutch and flywheel on your engine and bolt it back up.