jd 8200 computer problem

ILern

New User
have an ecu issue with 1995 8200 (so technically it is not quite an antique yet)that john deere does not seem to be able to resolve. Bosch ecu is bad thus cannot operate electronically controlled injector pump. JD does not service that ecu any longer and provides an updated ecu that apparently does not want to work in my tractor. Been working on this for over a month. Fortunately the tractor is not needed until spring. Have less problems finding parts for +50 year old Deere's. Anybody out there had a similar experience or have a solution?
 
Have you checked with a factory-authorized Bosch fuel injection shop to see if they have any advice/insight into this?
 
Did you install the "new' ECU/ECM or did the dealership??? It is common to have to update the rest of the programs in the other modules to make the one "new" one work.

Check with Ag Express. I have had them work on just about any other electronic tractor part.

I have also installed a used ECU/ECM on that age of tractor.

Truthfully the units rarely fail. I might have changed one or two in the last twenty years.
 
Had the tractor been "chipped"or a tuner program installed? I have run into some trucks that had been "tuned" and wouldn't recognize the new ecu due to previously installed programs leaving some residual bits and bytes floating around in other systems on the truck. Required a trip to the dealer and cleared everything and reflashed all of the vehicles systems. Just a thought....
 
As MSM said, has a chip been used that is embedded. I know of a pickup with a Spartan that took some juggling to get to work.

Would a yard ecm work or be to expensive if it failed.
 
What part of the tractor does it not wont to work with. Basicly the only parts (controller wise) is intering the wright info into the controller and it must match the rest of the the controllers.
 
That was the problem. The new ecu was not programmed. Worked as should after tech programmed it, least he says it did. I have not been out to try it yet. Also said that this is the first one that they have seen fail.. Lucky me. About a $3k failure all told.
 

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