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Location:
Perth
Registered:
August 2003
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3t-gteu plugs, tell me where they go
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Wed, 15 June 2005 09:53
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i know the center one goes to the efi computer but whre do the otherones go
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Registered:
November 2002
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Re: 3t-gteu plugs, tell me where they go
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Wed, 15 June 2005 11:15
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From memory the one on the right goes to the knock control computer and the LH plug looks like part of the original car loom, so its not really part of teh engien control.
Cya,
Simon
http://users.chariot.net.au/~stmezz/celica.htm
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Location:
Perth
Registered:
August 2003
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Re: 3t-gteu plugs, tell me where they go
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Wed, 15 June 2005 11:40
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cools, have you got a picture of the knock computer? it there one plug or two that goes into it?
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Registered:
November 2002
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Re: 3t-gteu plugs, tell me where they go
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Thu, 16 June 2005 12:34
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There is only one plug for the knock control (the one in the RHS side of your pic).
Check my site, all you need to know about the 3T GTE is there including a full wiring diagram.
Also check my rebuild, I have some pics there.
Got me thinking too, I reckon there might be 2 plugs for the main ECU. I have to check, either way check my site and you will know.
Cya,
Simon
http://users.chariot.net.au/~stmezz/celica.htm
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Location:
Perth
Registered:
August 2003
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Re: 3t-gteu plugs, tell me where they go
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Thu, 16 June 2005 13:10
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there is two plugs for the efi computer but only the center plug (12 pin) connects to it. What is the 18 pin connection of the efi go to?
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Location:
Hobart
Registered:
July 2004
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Re: 3t-gteu plugs, tell me where they go
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Sun, 19 June 2005 12:46
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the knock computer plug is only one green plug which im guessing you dont have on your harness you need 2 plugs into the EFI computer, u have the male ends which are meant to plug into another harness' female ends then in the second harness which im guessing you dont have theres a knock computer plug and all the wiring that goes to the coils and distributor, i had the same problem when i got my engine but i got an extra harness which was already set up for an engine conversion into a old toyota with the computer i brought (thanks CLG). send me some pics of the harness you have and i can help you out and see what you need to do as i had the same problem.
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Location:
Perth
Registered:
August 2003
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Re: 3t-gteu plugs, tell me where they go
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Sun, 19 June 2005 17:50
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sweet, thanks i'll get hold of a camera today and upload the image 
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Location:
Perth
Registered:
August 2003
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Re: 3t-gteu plugs, tell me where they go
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Wed, 22 June 2005 17:05
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ok heres what i got atm, any help?
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Registered:
November 2002
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Re: 3t-gteu plugs, tell me where they go
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Wed, 22 June 2005 22:54
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Looks like you have the main engine wiring, eg injectors, cold start injector, AFM connection and a few other things. Missing is one of the ECU plugs and teh knock control plug. I was wrong before, the plug should be green and does look very similar to that yellow plug.
Best advice is to check the wiring diagrams on my site. All you need is there. Its under "3T GTE info".
To get it to work you must have the AFM, twin coils, ignitor pack and preferably the pressure switches. There are 3 stock but you only need 2, one for fuel enrichment and the other to cut the knock control when the engine is under vacuum conditions. The third one was a fuel cut, but its crap and should be earthed as it simply cut fuel, which isn't what you want when under boost.
the engine will work without the knock control unit, but obviously its better to have it. The knock sensor is under the intake plenum, near the oil filter.
Hope this hepls,
Simon
http://users.chariot.net.au/~stmezz/celica.htm
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Location:
Hobart
Registered:
July 2004
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Re: 3t-gteu plugs, tell me where they go
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Thu, 23 June 2005 08:05
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i still think you are missing some of the connectors to the dizzy and coils which are green round ones. And i dont think you have an oxygen sensor connector and maybe some other shit, this is identical to the wiring harness i am throwing away, if you are missing these connectons you will need to get a wiring diagram and open up the harness and trace each wire back until you find ones that go to the parts you are missing (o2 sensor etc) and then link them back some how. maybe you could put a post up for an old wiring harness that someone has used in a conversion to a celica or something and buy that, when some people do conversions they get rid of alot of wiring but it looks as if someone has just brought say a half cut corona from japan and just copied and transfered every pice of wiring to their own car and then when they have taken it out later on just unpluged it half way to get it out and then sold it but without all the shit u need. well thats what happend to me and i just got another harness that was already set up. if you need an expert CLG on these forums is a wizz at these things.
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: 3t-gteu plugs, tell me where they go
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Thu, 23 June 2005 10:16
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I haven't read the whole thread sorry - tired, but the only "computer" plug you have there is the centre one. The other two plugs are loom plugs that contain wires for both the fuel computer and dash also. you need another fuel computer plug the same colour and style as the centre one, and a knock control computer plug that is green too.
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