

That’s why you should first look at the serpentine so you can rule out this option in your troubleshooting process. It’s not very expensive to replace the serpentine, but a common mistake that people make is to overlook the serpentine and directly source a replacement alternator which can be much more expensive. This means that if the belt is not working, there’s no voltage travelling from the alternator to the battery. The belt is also what is responsible for making a connection between the alternator and the battey. If that better describes your issue, check out our article here. Maybe the battery lights are on but the alternator isn’t charging. There are other things that can go wrong with your battery. We’ll get into a detailed description of each issue, how you can diagnose it and solve it on your own without spending a fortune at the parts store or calling a mechanic home. Here are some of the reasons why your battery gauge is fluctuating at idle Why does the battery gauge fluctuate at idle?

That’s why it’s a good idea to investigate and try to figure out the reason why the battery gauge is fluctuating whenever your car is idling. While this isn’t a problem in and of itself, it can be a signifier or a symptom of a larger issue. That’s when you realised that the needle is fluctuating when your vehicle is idling, though it’s steady when the car is driving. If you recently noticed that your car was jerking during ignition, you might have decided to take a moment to glance at your battery gauge on your dashboard. Usually, something has to go completely wrong with our vehicle before we take a look at the battery gauge. It powers many other components, and yet we don’t always keep the closest eye on it. The battery is one of the most important parts of your vehicle.
