When an alternator is going bad, the battery drains quickly. If the alternator is going or has gone bad, in most cases the vehicle can be driven for a short distance and for a short period of time, allowing you to make it to a service station or automotive parts store for a replacement alternator.Click to see full answer. Consequently, how far can a car run with a bad alternator?25 miles should be fine. Theoretically, on an older car, you can drive forever once the engine is running, you’ll just be without any electrical amenities in the vehicle. Newer cars are much more reliant on the battery/charging system, and many won’t even stay running with a dead battery.Secondly, what are the symptoms of a bad alternator? 6 Symptoms of a Failing Alternator The indicator light. Headlights are dim or flickering. Other electrical failures. Strange noises. Car stalls or has difficulty starting. Battery dies. Similarly one may ask, what happens when alternator goes out while driving? If the problem is a bad alternator, your car will slowly lose power. You’ll be driving down the road, your lights will dim, and you’ll lose power and die. Once the alternator stops working, so do all of the electrical systems required to keep a car going. Other problems can also cause a car to not start.How long does an alternator last? about seven years
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