Hi , Is there any web sites that have a good list of what ECU’s can be used on any XJ40’s. I know that there is specific ones for different countries and different emissions . There’s different color stickers and build date codes on them , can anyone explain what they equate to ? I"m in Australia , so what would the codes be for a car here , Just in case anyone knows what would be good for my cay , 1989 4.0 xj40 ,( an early 4 litre with the 90 dash ) . This is driving me batty , trying to find some answers . Thanks in advance .
Mark …
Could be a sticky wicket mate. Here’s a discussion on the very subject …
https://www.jaguarforums.com/forum/xj-xj6-xjr6-x300-26/ecu-compatibility-74622/
They mention cloning your old ECU’s info onto another model … interesting.
Thanks Groove , may have to look into a clone , maybe .
Mark …
What happened to your original ECU ?
Do you have the original ECU part number ?