The car struggles to start: This is a very obvious sign. Ignition coils provide the charge for the spark plugs, and when an ignition coil fails, the spark plug won't be able to start the combustion process. Som
in worse case scenario the wheel can lock up while driving or even fall off. Therefore a bad wheel bearing must be replaced as soon as possible when symptoms first appear.
. The large terminal goes to the battery: it's the 14.2 volt output terminal. Another terminal "turns the alternator on", or provides a sensing voltage for the regulator: it generally gets 12 volts from the "ignition switch on" circuit. The third terminal usually goes to the "alt" or ...
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