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Update

Those readings are still ok when symptom occurs. I rest my case with the alternator. Could be the ignition module instead. IIRC the module is incorporated together with ignition coil for Reginas (whereas Bosch uses separate module). That could mean swapping the coil with known good part.


Isn't there an alternator "exciter circuit" within the cluster that can go bad and mimic such issues?
-> Yes. But not in your case I think. If exciter circuit fails your voltages won't be that good.

Amarin.






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