3as ecu uses a different pattern flywheel aswell and are not compatable to 5as ecu.Ok thanks. Maybe I do have some other issue. It just seems VERY strange that two days ago, I had the original 5AS and original engine ECU on the car, and it ran fine. Then I swap the 5AS for a 3AS and also the engine ECU from the 3AS car -- boom, doesn't work. So then I go back to my original setup, and the car won't de-immobilise, and won't work.
One other question, I take it the only immobilisation done by the immobiliser is the starter and not the fuel pump?, I actually hear the fuel pump whirr up when I turn the ignition on so I take it that's all good?
Thanks for the reg number offer, I'll PM you.
Hi, I appreciate this is an old post but I've literally just carried out this on my mini, I was wondering if you ever got to the bottom of it, what wiring changes do I need to make? Because it definitely didn't like the 3as alarm with the original 5as loom, thanks in advance, Luke.Hi
Does anyone know if the 3AS and 5AS Lucas units are pin compatible?
Specifically can I plug a 3AS (and matched engine ECU) into a loom that previously had a 5AS (and matched engine ECU), and expect it to work?