Is 16 volts too high?
For some alternators, it’s normal to see as low as 13 volts. For some, a constant 13.6 volts is an indication of a problem. For others, it’s normal to see as high as 16 volts for long stretches. Still, it’s perfectly normal for others to see the alternator not charge at all intermittently.
What would cause the check charging system?
Battery problems – Your battery/check charging system light could be coming on because your battery is low and needs replacing. Drive belt troubles – A failed drive belt prohibits the alternator from doing its job and can cause the warning light to come on.
What sound does an alternator make when going bad?
If you’re hearing a grinding sound in your car, this could indicate that the alternator is going bad. The grinding sound may be caused by a worn-out bearing. Your car can also make a whining sound when the voltage regulator is sending signals to the alternator to charge more than is necessary.
Why is my car voltage high?
Why is my Car Battery Voltage Too High? There are a few reasons that can cause your battery to have a high voltage. Your battery could have a loose connection. Loose connections disrupt the flow of electricity so your battery can either be improperly charged or improperly discharged.
Should my alternator put out 15 volts?
Your SUV’s charging system (alternator and related components) needs to do two things – charge the battery and supply power for all vehicle needs while driving. Higher than 15 volts indicates a fault in the charging system’s voltage regulator or related circuits.
What causes charging system failure?
Its failure is most commonly related to the normal wear and tear of the commutator which is the component responsible for current flow. The causes of failure may also include installation errors. The alternator may also break down because of perfectly normal wear and tear of its parts.
What does it mean when my car says service battery charging system?
The alternator creates electrical power to run accessories and recharge the battery. If this warning lamp lights up while the engine is running, it means that there is a problem in the charging system, usually that the battery has gone bad or the alternator has stopped working.
How can I test my alternator?
More videos on YouTube
- Get a multimeter.
- Set your multimeter to DCV (DC Volts) above 15.
- Make sure your alternator’s positive and negative terminals are clean.
- Put the multimeter’s black cable to the negative terminal and the red cable to the positive terminal.
- Look for an ideal alternator reading of around 12.6.