Hi Liam, thanks for your reply.
I've rebuilt/repaired a few alternators from simple stuff like changing the diodes upto changing the slip rings and bearings. As you say, it's a good quality Bosch unit and although the rings have wear they're acceptable.
The car's done 6k kms since the regulator was changed and even now the alternator will charge if the engine is started from cold. What I don't understand is why the alternator systematically won't charge upon restart, as tested at least 3 times by myself.
I see that there's a red/black control wire going from the alternator to the item 4/46A:33 (engine control module). Does anyone know what signals/parameters are monitored by the ECU for this connection. For example temperature?
My assumption is that charging is governed by this red/black wire?
Any help greatly appreciated
Many thanks
Mike
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