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View Full Version : DDT won't com. with ECM??


yuioutta
05-16-2008, 02:16 PM
Can't seem to get the DDT to communicate with the ECM. Engine is a 96 Merc 260 with an A49 box but the chip inside says A31. Not sure what has been done to this before. All I get on the DDT screen is No response from ECM. Ideas? Thanks!
Greg Moss
05-16-2008, 03:19 PM
ECM is burned out should be running full rich when you drive it.
Scott in MN
05-16-2008, 03:22 PM
Had a buddy with that issue and was told he needed a new box if he wanted to hook up to DDT. His box was still firing the injectors just wouldn't communicate.
Don't know exactly which box he had...
Maybe Brucato could fix yours.....He's a supporting vendor here....
yuioutta
05-16-2008, 03:23 PM
Well it is definitely rich, that is why I am trying to put on the DDT so I can lean it out. You think it is shot? That would suck! Thanks
Greg Moss
05-16-2008, 06:21 PM
They fail safe to full rich when they burn out.
Jay Smith
05-16-2008, 06:30 PM
I send my ECUs and injectors to Brucato for service and or repairs their batting 1000 on ALL my stuff so far.

I would'nt trust anybody else with my customer's equiptment.

my .02
chad202
05-17-2008, 01:47 AM
I have one for sale.
Jay Smith
05-17-2008, 07:00 AM
Me 2, New style Motorola if ya need it.

Jay
yuioutta
05-17-2008, 08:44 AM
Well thanks for all the input.

Which boxes are you guys selling? I thought mine was an A49 but the chip inside has a sticker on it that says A31. Also how many $

Thanks.
chad202
05-17-2008, 08:31 PM
I have an A36 rapair ecu. It'll plug right up and work great for ya.
yuioutta
05-18-2008, 11:08 PM
Ok, does anyone know if I replace the chip inside with say an A-48 from US1, will it become useable again?? Also, Chad, how much for your A-36 box? Thanks
yuioutta
05-18-2008, 11:09 PM
Or on second thought.... would I be better off just buying an ACU from Brucato? Thanks
chad202
05-18-2008, 11:13 PM
450.00 shipped.
oldstv
05-19-2008, 08:18 AM
Which ddt do you have? If it is the 4 button tester and is one of the newer wons it will not work on the older boxes. Mine won't read my A63.
yuioutta
05-20-2008, 12:08 AM
No the DDT I used had about 25 buttons and was borrowed from one of the local Merc dealers. There was no reason that it shouldn't work.

So I did the smartest thing that I could think of and took Jay's advice. I called Tony and Linda Brucato. I now have one of their ACU products on the way. Thanks for the advice Jay!! Thanks to all for the advice!
Shawn