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Infiniti G20 Alternator

Catching the Culprits behind Infiniti G20 Alternator Problems

No music, no lights, and no sound-a dead vehicle. This is exactly how your Infiniti would be without the power of a properly functioning alternator. As the lifeline of your car's battery and electrical components, your Infiniti G20 alternator must always be in good condition. If it fails or malfunctions, your battery, radio, light assembly, and virtually all electrical devices in your vehicle will die as well. To prevent your battery from discharging and losing power completely, it is important to diagnose and troubleshoot alternator problems right away. Failing to do so will result in shortage or loss of electrical supply, high repair costs, and possibly even more pocket-draining replacement expenses. Here's a guide to help you catch the culprits behind common alternator problems:

Overheated alternator

If your alternator's overheating, the first thing you should check is its built-in fan. This part provides the necessary amount of air to prevent your alternator from overheating. If the temperature of your alternator goes beyond normal or spikes up excessively, its wiring and components will be destroyed completely. Overheating will also cause your alternator to go kaput, especially after a long and hot day on the road. To prevent overheating problems, check the alternator fan for damage and have it replaced if necessary. If the fan seems to be functioning properly, then next on your list should be the alternator's grounds and wire connectors. Inspect them for looseness and damage. Loose connectors and grounds can place a heavy draw on your alternator that results in overheating, so tighten and secure the wires accordingly. Also, damaged connectors and grounds must be replaced right away.

Low electrical output

A malfunctioning alternator will typically produce low electrical output, but the problem may also lie in a faulty, loose, or slipping belt. Since this belt drives the alternator and allows it to turn at the required rate, any damage or defect on this part will cause loss of charging power. To prevent this problem, perform a visual inspection on the alternator belt regularly to see if it's cracked, worn out, broken, loose, or slipping. Adjust the belt's tension properly to prevent it from slipping or becoming loose. You should also replace the belt right away if it's already damaged beyond repair.

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  • Preventing Power Loss: Caring for Your Infiniti G20 Alternator 27 February 2013

    A well-maintained alternator is one of the prerequisites of a properly working vehicle. If this part fails to operate at some point, the life of your battery and electrical components will start to dwindle until they're down to zero power output. As your vehicle's primary source of electricity, it is important to keep your alternator in tiptop condition. The life of your Infiniti G20 alternator may last for at least 40,000 miles, but you can extend it well beyond 100,000 miles with proper care and maintenance. Here are a few tips in maintaining your alternator:


    Clean the alternator's components regularly.


    Cleaning the components of your alternator, like the belt, case, rotor, slip rings, and brushes, is one of the ways you can maintain its good condition. Over time, dust may gather on the alternator belt, causing it to function less effectively. Also, dirt may build up inside the alternator and cause its internal components to wear out. When this happens, your alternator may perform poorly, putting the life of your battery and electrical components on the line. To keep the alternator free from dirt and dust, clean its components regularly using a dry cloth. Make sure the fabric is soft and non-abrasive to prevent the parts from getting damaged. Spinning the rotor and using fine polishing cloth on the slip rings is also effective in removing dirt. Electrical contact transfer grease may be applied on the alternator's end frame casting to prevent overheating.


    Check the alternator belt for damage or looseness.


    Checking the belt regularly is another way to maintain the good performance and condition of your alternator. If the belt fails or slips, your alternator will get the full blast of its defect. A belt that is too loose or too tight will prevent your alternator from turning properly, resulting in poor performance and low power output. To prevent your alternator from malfunctioning and your battery from discharging, always perform visual inspections on the belt to check for signs of cracking, glazing, or slipping. Also, make sure the belt's tension is adjusted properly. Consult your owner's manual for the belt's correct tension level. A cracked and severely worn alternator belt should be replaced immediately.