Most of the online BGB are down.

Well, my harness came in today. Came from a 97, but it was cut at some point. I gotta figure out what part was cut.

I got it running today, but it was running really rough with the rpms jumping. Im guessing that is more an issue with the distro that the ECU. Now the fun begins gonna try to identify all the conncections on the wire harness before I proceed. I will update with some pictures.

This post has been edited by m2736185: Mar 3, 2012 - 10:45 AM

I got the harness today, but there is a nice piece of the sections that was cut. Ill see if I can get a pic

This post has been edited by m2736185: Mar 4, 2012 - 1:26 PM

Holy crap that b!tch is jury rigged... anyway... all i was gonna say is... JT2AT vin code is Celica ST. J for japan... T for toyota... 2 for vehicle type... A for engine type (A for celica ST... S for celica GT)... T for chassis/model. This is universal for most Toyota models originating prior to 1996.

I cannot shed any light onto the the wiring harness problem, but if you are still using that 4age ecu, that would be the FIRST thing I would change. my .02$

Yes, the ECU is going to be changed, but it wont do any good until I can make sense of this wiring.

I wish the previous owner would have left the 4age in there.

Anyways I think the reason I dont see a few of the connectors is...the harness has been cut. I have been unable to locate the MAP sensor, o2 sensor, sensor on tranny and a few others. Here is a pic if anyone can identify this part.

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that big bundle of wires with the white plastic clip on it looks like the harness bundle for the Diagnostics port.

I think you might be right. I just looked at my GT and it has a similar plastic clip that splits into the diagnositc port....and the igniter...i might need that.

This post has been edited by m2736185: Mar 4, 2012 - 2:05 PM

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there is a pic of it in my profile. mine is a 97 st

So I wish that was just the diagnostic port, but the wires for the igniter is also in that bundle and the 2 wires to the left are for the MAP sensor.

Anyways the harness i bought is also missing the battery cables so I have to splice in my own. I noticed there are 2 wires running to the 100 amp fuse in the fuse block. One is white and one is black. I am guessing one of these go to the battery and then there is another cable somewhere that goes to the starter and alternator?

She Lives!

I put in the new ECU for the 7A, fresh gas, checked the pressure of the gas (26-34 PSI). With the help of starter fluid and a few tries until the battery was almost dead it started up. Runs 100x better with the 7A ecu. I guess the previous owners that had the blacktop in there left the exhaust the had on there. Its super loud it make the 7a feel like its faster than my 5s.

Only scary part was after I ran the car for a test drive around the block...I took the key out of the ignition and you would think the car would turn off right? Nope, I ran over to the battery and unhooked the battery cables and still nothing. I was about to pull the cables from the dizzy but it finally turned off.

Still gotta put in the new harness
Figure out why the fuel pump doesnt turn on without my jumping it.

This post has been edited by m2736185: Mar 18, 2012 - 2:28 PM

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GRATS!!!!!

and as to the pump.. do tell!!!

i thought i had posted earlier. that ECU is for a corolla or MR2 with a 4A-GE in it. no wonder you were having so many problems. looks to me like someone thought they could get more power by using that ECU. who knows???

Yes, who knows why the ingition doesnt turn it off, but I am going to install the new harness and corss my fingers that it solves all the problems.

BTW it could just be the exhuast making me feel like I am going faster than I am, but it feels faster than my 5s.

Smaay: They had a blacktop swap in the car. It took me a whole to figure out, but it makes sense why they have the ae111 ecu and an external blacktop coil mounted next to the igniter.

The oil is the dirtiest oil I have ever seen and I think it may have been contaminated with gasoline. I bet its the same oil thats been in the engine since it was swapped out of whatever car it came from.


I still need to pick up a map sensor, igniter connector and diagnostic port from the junkyard then I can start the rewiring.

It doesnt seem too difficult. I hope I dont end up eating those words.