How to know if a Subaru alternator is bad?
If your Subaru's electrical system is acting up, it could be a sign that the alternator is failing. The alternator is responsible for charging the battery and powering the vehicle's electrical components while the engine is running. Knowing the signs of a bad alternator can help you diagnose and address the issue before it leaves you stranded.
Signs of a Bad Subaru Alternator
- Battery not charging: If your battery isn't holding a charge or the dashboard battery light is on, it could indicate a problem with the alternator.
- Dimming headlights: Alternator issues can cause the headlights to dim when the engine is idling or revved up.
- Electrical issues: Problems with the alternator may lead to flickering dashboard lights, issues with the radio, or other electrical malfunctions.
- Unusual noises: A bad alternator may make whining, grinding, or squealing noises.li>
If you notice any of these symptoms, it's important to have your Subaru's alternator tested as soon as possible to avoid further damage to the electrical system or battery.
Testing the Alternator
To determine if the alternator is the root cause of the problem, you'll need to perform a few tests. You can use a multimeter to check the alternator's voltage output while the engine is running. The voltage should be between 13.5 and 14.5 volts. If the reading is outside of this range, it could indicate a failing alternator.>
Another way to test the alternator is to disconnect the battery while the engine is running. If the engine stalls or the electrical system shuts off, it's a sign that the alternator is not properly charging the battery.p>
If the tests confirm that the alternator is faulty, it's best to have it replaced by a professional mechanic to ensure the electrical system is properly restored.
How can I test if my alternator is bad?
Warning Lights: Look for the battery or alternator warning light on your dashboard. Dimming or Flickering Lights: If your headlights or dashboard lights dim or flicker, it could indicate an alternator issue. Electrical Failures: Malfunctions in electrical systems (radio, power windows) may suggest a failing alternator.
Can AutoZone test an alternator?
ALTERNATOR TESTING
Testing will ensure you identify a power issue correctly. How to get your alternator tested: Just visit a nearby AutoZone. We'll test the alternator while it's still in the vehicle.
How do I know if my Subaru alternator is bad?
Weak Or Flickering Headlights
Any problem that involves electrical components like lights, audio equipment or climate controls could ultimately be traced to a bad alternator. One of the most common you'll see first is headlights that are dim and may even flicker or fade as you drive.
How does a vehicle act when the alternator is going out?
“If your alternator is going bad, you might see the voltage meter on your dashboard start to drop, or your car might start to vibrate while you're driving,” According to Matthew Hart. The vibrations are typically caused by misfires within the spark plug caused by a lack of current from the alternator.
How do I know if I need a new alternator or battery?
One of the most obvious signs is if the car dies after a jump start. The alternator should provide enough current to keep the vehicle running even with a bad battery. If it doesn't, then your alternator needs to be examined.
What are the first signs of an alternator going bad?
Some warning signs of a failing alternator include:
- 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.
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.
How much does it cost to replace an alternator?
Alternators can average anywhere from $100 to $350 depending on make and model. Most vehicles will have an average cost between $350-400 for the total job of an alternator replacement if no other parts need to be replaced. If the serpentine belt is included in the process, add another $20 to $50 to your bill.
Will AutoZone test my alternator?
Getting your alternator tested at AutoZone is simple and hassle-free. An AutoZoner can test your alternator while its still in your vehicle, saving you the hassle of removing it and re-installing it if it's still good. Or, if you have the alternator out of your vehicle already, we can test it on the bench instead.
Can you jumpstart a car with a bad alternator?
Yes, you can jump start a vehicle with a bad alternator, but it is not a long-term solution. Jump starting a vehicle with a bad alternator will temporarily provide the necessary power to start the engine, but the alternator is responsible for recharging the battery and powering the vehicle's electrical system.
