Oh buggerit... messed up the immobiliser

Any ideas please "Elsie" is immobilised . She came with one fob which would unlock the doors and turn off the alarm etc but would only lock and alarm sometimes. Tried resetting and it improved it slightly but still not as it should be.



So this morning whilst taking out heater resistor pack and ducting to fix thought I would remove the black box under the heater and swap it for the oen off the Blue VVC donor which has two working fobs. Yep doors unock and lock but of course engine would fire but not continue to run.



Ahh thought I swap engine ECU and that's what I did and not it's completely immobilised even with original boxes re-fitted.



So what do I do now? :crying:

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