The alternator is a crucial component of your vehicle’s electrical system. It keeps your battery charged, powers your car’s electronics, and provides the energy to start your engine. Without a properly functioning alternator, your vehicle would run out of juice quickly. Unfortunately, alternators can fail or wear down over time, and that’s when you’ll need to consider alternator repair or replacement. We’ll cover everything you need to know about alternator repair and replacement, including common signs of trouble, how to diagnose the problem and your options for repair and replacement.
Signs of Alternator Trouble
The alternator is responsible for recharging your car’s battery, which means that if it’s not working correctly, you might experience issues with your car’s electrical system. Signs of alternator trouble can include dimming headlights, a dead battery, or a check engine light that comes on. Some other signs to watch out for are flickering or dimming dashboard lights, noises from your engine-especially when you rev-and a burning smell from your alternator.
Diagnosing the Problem
If your alternator fails, the first step is to perform a quick visual inspection. Look for signs of wear or damage, such as frayed wires or broken connections. If everything looks normal, you’ll need to use a multimeter to test the voltage output of your alternator while the engine is running. If your alternator works correctly, you should see a voltage output between 13.5 and 14.5 volts. If you’re getting a lot of inconsistency or below the optimal range, you’ll want to have your alternator professionally inspected.
Repairing vs. Replacing Your Alternator
Depending on how severe the problem is, you can repair your alternator instead of replacing it entirely. Common issues that can be fixed with repair include a worn-out drive belt or damaged bearings. However, more severe problems, such as a damaged stator or armature, will require complete replacement. Fortunately, replacement alternators are widely available, and many auto repair shops can handle the replacement process.
Choosing the Right Replacement Alternator
If your current alternator needs to be replaced entirely, you’ll need to select the correct replacement unit. Your best bet is always to go with a new alternator, as refurbished or rebuilt units may not be as reliable and come with a much shorter warranty. You should also ensure the replacement alternator is the correct size and has the same output rating as your current unit.
Your vehicle’s alternator plays a critical role in keeping everything running smoothly. Don’t ignore the warning signs, and take your vehicle to a trusted auto repair shop for a professional inspection if you suspect something isn’t quite right. Your alternator should keep you powered and on the road for years with proper care and attention.