My bet is the immobilizer. You could have lost the program when the battery was out of the car. You will know if it has lost the program if the key illumination on the dash when the key is in the ignition II position is not lit up. Try placing the fob right next to the push button start then press and see if she fires up. The battery in the fob might be dead, and that procedure is a fail safe way of starting the vehicle when that small little battery dies.
You can try this too.
https://forum.ih8mud.com/threads/efi-relay-bypass-kit-immobilizer-fix-for-uzj100-lx470.952811/
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Last edited by mattdavis11; 10-16-2020 at 05:47 PM..
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