I have been working on a 2002 discovery forever and it will throw a code for one thing and then I fix that and then another code comes up. I know its not bad sensors or bad wiring and now I feel its an ECU issue. I took the truck to the local dealer and they had it for over a month and did not even call me or touch it so I got it back and started working on it again.

So where I am at now is I have another 2002 that is wrecked but runs like a champ. I would like to swap out the ECU and see if that takes carer of the issues with my other truck. That being said is there any problems with swapping out one ecu to another truck?

 

i "believe" you will have better luck if you change the ECU,BCM & dash from the spare truck,
i think they are all linked.

 

Don't forget the remotes if you can get them.