Can you fix an alternator by yourself?
Replacing an alternator can cost you several hundred bucks at the local repair shop, but it’s one of the simplest repairs you can do at home. With a few tools and about an hour you can swap it out yourself — and keep your dough in your pocket where it belongs.
What happens when you replace the alternator in your car?
Average rating from 5,281 customers who received a Alternator Replacement. The alternator is one of those parts that, when it malfunctions, can leave you high and dry by the side of the road. This essential component of your vehicle’s systems turns mechanical energy into electrical energy, which in turn, powers electrical systems in the car.
How to know if you are getting a good alternator?
How to make sure you’re getting a good quality alternator: Check the part number: The required information for getting the correct part can usually be located on the alternator itself. If not, call a dealership with your VIN and they will tell you exactly which one you need.
Where do I find the part number for my alternator?
Check the part number: The required information for getting the correct part can usually be located on the alternator itself. If not, call a dealership with your VIN and they will tell you exactly which one you need.
What to do if your alternator makes a squealing sound?
If there is a problem with the bearings you may hear a squealing sound coming from the front of the car, which becomes louder with more electrical accessories using power at the same time. Turn the radio on and rev the engine. Tune your radio to a low number on the AM band with no music.
What should the voltage be to replace an alternator?
Reconnect the negative battery terminal. Attach the voltmeter to the battery and start the vehicle. Check for proper voltage, indicated by the alternator output read between 13.1 to 16.5 volts. If everything checks out, your alternator replacement job is complete.
How can I tell if my alternator is in high gear?
Start the vehicle and rev the engine to 2,000 RPM. This will draw power on your battery, which should cause your voltage regulator to kick the alternator into high gear. Keep the engine running and retest the battery with the voltmeter. When you read the voltmeter this time, the voltage should go up to at least 13.
What happens when an alternator fails on a car?
The headlights draw power from the battery, just as ignition, audio, starter motor and everything else. If the alternator fails or doesn’t deliver enough power all of these will continue to draw from the battery until it is empty. The battery won’t recharge (properly) anymore, however.
What does it mean when alternator reading stays the same?
If the reading stays the same or drops, that means the alternator isn’t charging and you may need a new one. If the reading is more than 2 volts higher, that could mean that your alternator is overcharging. Either way, take your car to an auto repair shop to find out what’s wrong.