Yeah, throw expensive parts at it.

Don't even think of hooking up a voltmeter you can read while you're driving and the problem occurs. Never do any real diagnosis. Don't ever consider a subassembly like a voltage regulator or brushes. Never check the diodes in the alternator. Don't even check the continuity of all the electrical connections in the charging circuit.

Just spend $ in big chunks.

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Norm in NJ
Next oil change at 230,000miles