How many volts should a Subaru alternator put out?
As a car owner, it's essential to understand the various components of your vehicle, especially when it comes to the electrical system. One crucial part of this system is the alternator, which plays a vital role in keeping your car running smoothly. In this article, we will explore how many volts a Subaru alternator should typically produce and why this is important for your vehicle's performance.
What is an Alternator?
The alternator is a key component of your vehicle's charging system. It converts mechanical energy from the engine into electrical energy, which powers the electrical systems of the car and charges the battery. A properly functioning alternator ensures that your vehicle has the necessary power to operate everything from the headlights to the radio.
Voltage Output of a Subaru Alternator
For most Subaru models, the alternator should produce between 13.5 to 14.5 volts when the engine is running. This range is crucial for maintaining the battery's charge and ensuring that all electrical components function correctly. If the voltage output falls below this range, it may indicate a problem with the alternator or the charging system.
Signs of Alternator Issues
It's important to be aware of the signs that may indicate your alternator is not functioning properly. Here are some common symptoms:
- Dim or Flickering Lights: If your headlights or dashboard lights are dimming or flickering, it could be a sign of alternator failure.
- Battery Warning Light: A warning light on your dashboard may indicate that the alternator is not charging the battery effectively.
- Electrical Issues: Problems with power windows, radio, or other electrical components can signal alternator problems.
- Strange Noises: A failing alternator may produce grinding or whining noises due to worn bearings.
Conclusion
Understanding the voltage output of your Subaru's alternator is essential for maintaining your vehicle's health. Regular checks and awareness of the signs of alternator issues can help you avoid more significant problems down the road. If you suspect your alternator is not performing as it should, it's advisable to consult a professional mechanic to diagnose and resolve the issue promptly.
Frequently Asked Questions
What is the maximum car alternator output voltage?
14.5 volts
The alternator in an automobile produces a minimum of 13 volts. The maximum voltage production should be 14.5 volts. The alternator generally lasts about 100,000 miles. After this time, the alternator can start to malfunction and make growling noises in the engine.
How many amps is a Subaru alternator?
130 Amp
(130 Amp) Alternator For Subaru Crosstrek (2.0L) 2018 2019 2020 2021.
At what voltage is an alternator bad?
If the noted value is excessively high (greater than 15V), it may indicate that the alternator's voltage regulator has gone bad. If the reading is lower than 13V: The engine idle speed may be inadequate for the alternator to produce sufficient voltage.
What is the best way to check if your alternator is bad?
Voltage Testing
With the engine off, you should get a reading around 12 volts. Now start the engine – the voltage reading should increase to between 13.5-15 volts. If it stays around 12 volts, that indicates your alternator is not charging properly.
What is the output voltage of a Subaru alternator?
Also, make sure that the connection of the alternator output wire is tight and not corroded. During charging (with the alternator at full output), you should see no less than about 13.8 volts across the terminals (+ and ground) of the battery, and no more than about 14.2 volts.
How to tell if a Subaru alternator is bad?
How to Tell When Your Subaru Needs an Alternator Repair
- Electrical Power Falters.
- Battery Fails to Recharge.
- Engine Losses Power.
- Dashboard Warns You.
What are the signs of a bad alternator?
How Do You Know if a Car Alternator is Bad?
- Trouble starting your car.
- Frequent stalling.
- Whining or screeching noise after the vehicle starts.
- Dim or overly bright lights.
- Smell of burning rubber or wires.
- Dead battery.
- Battery dashboard warning light is on.
What if my alternator is putting out too much voltage?
An overcharging alternator is typically caused by a defective or malfunctioning voltage regulator or transistor, and can result in flickering lights, a battery dashboard warning light, reduced lifespan of bulbs, blown fuses and relays, and a bulging battery.
How many volts should a alternator kick out?
Output voltage should be around 14 volts (13.8 to 14.5 depending upon the application) with the engine running. If you check the voltage at the battery under the same parameters, you should not have more than a half volt drop between your result at the alternator and the result at the battery.
How long do Subaru alternators last?
How Long Do Subaru Alternators Last? Subaru alternators typically last around seven years or more, often exceeding 100,000 miles.
