Originally Posted by
ScottCommutes
If I recall correctly, 50% of automotive starters and alternators that are exchanged for rebuilds turn out to function correctly. Lots of pros are evidently throwing parts at cars to see what sticks. For bad and sometimes good, the practice is widespread.
Sounds like they failed to check voltage drop on the connectors before condemning the parts, I wonder if simply removing/replacing the "bad" parts would have had the same effect as fitting new. It seems many "mechanics" are sorely lacking in diagnostic skills, and should stick to doing oil changes. Having said that, it's next to impossible to diagnose some bike noises ...