View Full Version : Wiring Problem Part 2

April 27th, 2005, 11:44 PM
I finally narrowed down my problem. 1 of 2 things (or both)

1. is I got a bad ECU.
If there's anyone who's got a 90 mkIII i could test my ECU on?
With in the general vicinity of course.


2. I got a short in my wiring. From my coil pack to my ignitor module. Some where in there is the problem. Any suggestions?

April 28th, 2005, 12:05 AM
If you still think it is a problem with wiring, get out the diagram in the trsm, and an ohm meter. I don't have the pinouts with me, they are in the shop from where I did mine, but you'll figure it out. Just check everything at both ends. It took me weeks to find out my ECU was the problem.

April 29th, 2005, 07:21 AM
I'm saying this because I found one frayed wire by my ignitor. Also, I haven't had a chance to test my ECU on some elses car to see if it's the ECU. So, if anyone with a 90 supra in the Westchester area wann get together with a bunch of other Supra-Heads let me know.....

April 29th, 2005, 07:42 AM
I'd say your crusty wiring is the more likely candidate. Off the top of my head I don't remember hearing about any tccs failures.

April 29th, 2005, 11:17 AM
:werd: im under the impression that our computers RARELY fail. and if it is throwing out codes and what not, that is a further indication that the computer is not at fault.

April 29th, 2005, 12:38 PM
I can't even get thge ECU to throw codes. Does the car have to be running to throw codes?

April 29th, 2005, 01:57 PM
Mine wasnt throwing codes.

My ECU wasnt gettin the AFM signal, turns out there were some old, crapped out wires. I suggest you fix em, tape em up or something, then try it. I'm willin to bet thats it. Damn old wires.

April 29th, 2005, 02:18 PM
any 89+ ecu should work...
Actually, I've got a spare, now that I think of it.

April 29th, 2005, 07:43 PM
Sonex- I think you should just put a match in the gas tank. Problem solved J/k :crazy1:

May 1st, 2005, 08:39 AM
:evil5: So when are you going to fix the ride? :evil5:

May 4th, 2005, 08:14 AM
Last night car was running. Running but with little power. Timing is retarded. Have a small leak by the injectors.
The problem was the wires by the CPS and my TPS is a little off.
I order the gromets for the injectors top and bottom
They should be in tomorow.
Gotta find myself a streetside mechanic

May 4th, 2005, 09:40 AM

May 4th, 2005, 12:52 PM
:bigun2: I think you should still let me fix it my way :bigun2:

May 4th, 2005, 10:02 PM
I would have considerd it, but i ran out of rags and a lighter yesterday.

May 5th, 2005, 03:46 AM