I take my vehicle to one my local nationwide auto parts stores [like Autozone, O'Reilly, etc.].
They have handheld, portable, test equipment with which they can test alternators, batteries, and electrical systems on my truck while in their parking lot.
In our area [SE Texas] these testing services are free.
Is it the correct alternator for your vehicle? What are you working on? If you add a little more detail to your question I'm sure it will be simple to answer but we don't even know what you're working on.
Car won't start... engine can turn over, no power.
Get a "multimeter" which is a device that measures many electrical currents and put the positive and negatives on the corisponding terminals of the alternator you should be getting a reading of 12 to 14 volts if this doesn't happen then your alternator is'nt working properly
Hi the tacho runs off the alternator & when it stops working it is normally a sign of a fault with the alternator so firstly i would check that the alternator is working corectly
How to Tell If Your Car Alternator Is Bad Check related link below…
The working principle of an alternator is like that of a small turbine. The alternator spins and a series of copper wires and graphite brushes inside the alternator produce electricity. That electricity is then transferred to the battery to keep it charged enough to run all of the electric parts on the vehicle.
Is the alternator actually working. It is possible to buy a new alternator that is defective.
Hello, There are many symptoms of a bad alternator that you should pay attention to: If your alternator is not working properly it might affect how the alternator belt is turning. An alternator that is not working properly will make an audible sound. Removing the alternator belt can confirm if noise is coming from the alternator. Another symptom is if anything electrical slows (windows, seats, etc) or the lights dim while you are driving. Yet another symptom is experiencing difficulties starting your car. This could be an issue with the battery, so make sure that you check the terminals and note the age of the battery. If your battery frequently discharges then this is another sign of a bad alternator. Hope this helps!
If the alternator is working properly then it should go off onec the engine has started. If it does not then you probably have afaulty alternator.
no, the light has nothing to do with the alternator working properly, the light is only to warn you that it isn't charging the battery properly.
your barrery will die eventually because alternator isn't creating power for the vehicle to run on
No. If the alternator is working fine, the battery power is not used.