ECM swap? - JeepForum.com

 
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post #1 of 7 Old 02-27-2011, 08:02 PM Thread Starter
g4x4xgeoff
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1994 YJ Wrangler 
 
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ECM swap?

last step of my tf-999 to ax-15 swap, the ECM needs some attention.

I either need to trick it into thinking the automatic is still there, or replace it with a manual ECM.

what would you do? Keep the current ECM, and trick it (and how), or swap out a manual ECM (will it just snap into the harness?)


Quote:
Originally Posted by Hurley91 View Post
I could be drunk, high, raped and almost dead.... and I could still recognize it.


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post #2 of 7 Old 02-28-2011, 07:36 AM
Que89YJ
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Keep it and just ground the nuetral saftey switch. Its the same controller.
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post #3 of 7 Old 02-28-2011, 12:54 PM Thread Starter
g4x4xgeoff
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Quote:
Originally Posted by Que89YJ View Post
Keep it and just ground the nuetral saftey switch. Its the same controller.
Easy enough, are there any other concerns you can see, orhappen to know which wires off hand?

Quote:
Originally Posted by Hurley91 View Post
I could be drunk, high, raped and almost dead.... and I could still recognize it.


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post #4 of 7 Old 02-28-2011, 01:18 PM
Que89YJ
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Wire from Pin 30 of the ECU:
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post #5 of 7 Old 02-28-2011, 06:16 PM
Mark05059
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Quote:
Originally Posted by Que89YJ View Post
Wire from Pin 30 of the ECU:
I was looking for this yesterday

1998 ZJ 5.2 Auto

1989 Wrangler Black Bone Stock 2.5l 5spd
/l , [____],
|---L--[]lllllll[]-
()_) ()_)==O=)_)
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post #6 of 7 Old 03-01-2011, 10:41 AM
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
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Cut the wire from pin 30 near the ECU and run it to a good chasis ground near the ECU.

The spedo input is necessary for the ECU to function properly and for speed to work on the cluster. Here are 2 links for info:
http://www.jeepforum.com/forum/f12/4...ection-963222/
http://www.jeepforum.com/forum/f12/h...73/index2.html

The crank sensor should be located here:
http://www.jeepforum.com/forum/f12/r...o-fire-650259/

Im not sure what you got the AX 15 out of but the flywheel and the Crank sensor are very important. The fly wheel is like a tone wheel for the crank sensor. Every rotation send a specific sequence of pulses though the crank sensor to the ECU. The fly wheel must be from a 91-95 YJ or an equivelent XJ with the same engine. It will not start if it isnt! Also the location of the crank sensor is critical in setting the timing. It should be located here:
http://www.jeepforum.com/forum/f12/4...x-15-a-928285/
http://www.jeepforum.com/forum/f12/r...o-fire-650259/

Post back here to your thread if you have any more questions. I hope it helped.
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post #7 of 7 Old 03-01-2011, 01:55 PM Thread Starter
g4x4xgeoff
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Thanks man,

flywheel came out of a 94 4.0 so we're good on that aspect, got the cps ready to go in,

hopefully all goes well tonight!

Quote:
Originally Posted by Hurley91 View Post
I could be drunk, high, raped and almost dead.... and I could still recognize it.


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