How to get your alternator running smoothly and silently

Alternators can be scary things. They play a crucial role in keeping your car going, and if they fail, can leave you stranded. More, as complex and intricate electrical units, they are not the sort of thing many would rush to disassemble should something need to be repaired. So why did I have mine open on the kitchen table the other night?

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Give your pulleys a new lease on life

The belt that drives the accessories on the front of your engine is routed around a number of pulleys. Some of these are attached to things like the alternator and power steering pump, and there is also a pulley on the belt tensioner. You may find that your car has a separate pulley, called the idler pulley, that solely functions to route the belt a particular way.

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