But remember that the light doesn't always mean there is a bad part; the light may be triggered by a sensor giving a wrong message. Please see and for more information on vehicle charging systems and charging. Either go to a different mechanic or take it to Autozone. I suggest you get the specific gravity checked. In any case, the alternator is not generally designed to charge a battery from scratch, but just to keep it charged during normal use. At that point, the vehicle will shut off and service will be required. Should the alternator assuming that its working be able to power the car indefinitely as long as it is running? Troubleshooting for Unusual Charging System Voltage Drops.
I could just get a new battery from Canadian Tire while I get the alternator from there, but I'm just wondering if there was a way to save a few bucks on this. This maximum-load, minimum-speed condition is where the wear happens. It will leave your battery undercharged which causes sulfation. Make sure the tensioner pulley turns freely and without noise. A car alternator uses an electromagnet called a field winding to produce a magnetic field which rotates to generate power in the stator windings.
Sometimes these neighborhood mechanics tries to take customers for a ride. To learn more about the signs of a failing alternator, or to schedule an appointment, they can be reached at from their website; they can be reached at. If the light illuminates only intermittently, it usually indicates worn-out or bad carbon brushes in the alternator. Though I highly doubt it, could there be a chance that this is just battery failure and the alternator may still be ok? I have purchased several in my lifetime that I've had to take back to the parts house and have them checked. Sign In All good advice. When one or more diodes go bad, the alternator can cause all kinds of problems. If you disconnect the negative battery cable and then lightly touch it to the negative post and see a fairly large spark you know something is on.
I cant seem to understand this - is it possible for the alternator to somehow die because the battery was drained? Car stalls or has difficulty starting. And tested the battery with the car running and the battery stays around 13. Once the light turns off, you've found the problem connector or wire. Battery doesn't draw anything from alternator. Something is feeding power to the circuit, possibly a bad ground. Simply running a battery down, assuming the battery is in good shape before that, shouldn't hurt it.
It is also possible that there is a… If you have checked the battery and made sure that the new alternator is working, the only other possibility is that something is staying on when the ignition is off. Replace, the battery; your alternator and starter will both be subjected to higher stress if the battery is low. If all that turns out okay, check the battery. Always use a battery charger to recharge your battery. If the problem is not taken care of on time, it can ruin your battery.
Boss - this is a wrong theory. Constant running at full output simply overheats them and the rectifiers fail. At any rate, the draw will be less than charging current of a fresh but discharged battery, so it'll be well within the design limits of the alternator. Then by spinning the rotor a moving magnetic field is created. How Does an Alternator Work? Both work very well, but I don't know why the battery immediately dies after switching the key.
Once that happens, the alternator will no longer charge the battery. If not, its output is too low. Thanks , I would be more than happy to learn what I do not know, or correct my knowledge. Trying to avoid spending too much for a part that wasnt the problem. But it came on right after i changed the alternator.
Look for damage to the cable and the terminal itself that may prevent proper electrical current flow. After about 10 min it was dead. Sign In In Reply To Battery and alternator depend on each other and can harm or kill each other. Conversion Tracking Pixels We may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service. If the battery is flat, then more current means less charging time, and vice versa. Basically anything electronic that you use in your car. Technically speaking, an alternator is a generator, and most people can readily grasp that concept.