How big of a fuse do I need for an alternator?
First using too small of a fuse or circuit breaker can cause many problems. In a 130amp 3G the fuse should be a minimum 160amps, preferable 180 or 200amps. As when the stock alternator is loaded way down, it can produce 160amps at about 12.8 volts. This varies from alternator to alternator and is much higher for high output alternators.
What happens when a fuse blows on an alternator?
Your alternator will typically stop working when the fuse for it has blown. The fuse might blow because of old age, and it might blow because of a power surge within your car. Either way, you’re going to have no choice to replace a fuse when you have an alternator fuse blown.
What happens if you have a bad alternator in your car?
The car won’t start at all. 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. If the problem is with your battery, then you’ll generally only have trouble starting your car since that’s the battery’s main function.
What causes an alternator to go over base voltage?
If you are getting more than 2 volts above base voltage, most likely your alternator is over-charging the battery or the battery is faulty. Other potential problems are a faulty voltage regulator or a problem in the charging system wiring.
What to do when your alternator fuse is blown?
Step 1: Purchase a new alternator fuse for your car. The first thing that you’ll want to do when you have an alternator fuse blown in your car is pick up a new alternator fuse for it. You might not have a wealth of experience when it comes to buying fuses for your car, but fortunately, it’s not difficult to find one.
How much does it cost to replace an alternator fuse?
Even if you have to replace a fuse when you have an alternator fuse blown, though, it still should be a relatively inexpensive job. Most auto repair shops will replace the alternator fuse in your car for under $100, depending on what type of car you have.
What should the fuse be on a 130amp 3G alternator?
In a 130amp 3G the fuse should be a minimum 160amps, preferable 180 or 200amps. As when the stock alternator is loaded way down, it can produce 160amps at about 12.8 volts. This varies from alternator to alternator and is much higher for high output alternators.
Why is my alternator not starting my car?
The alternator generates the energy that a car’s battery needs to do its job. And as we know, the battery is responsible for starting the car. So if you can’t start your car or it takes some doing, you know that something may be up with the alternator. The alternator also powers the electrical system in your car.