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Yes it does. The alternator will only produce voltage if it has a battery supply. The battery power is used to create a magnetic field in the alternator. Spinning the magnetic field induces an electric field in the stator windings. Then the alternator can produce power to recharge the battery and maintain the electrical supply to the engine and ancilliary circuits.Take away the battery, no electrics, engine dies.
Plus, it can also cause an electrical spike that could damage the computer.
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How do i know if it is the battery or the alternator?
Remove the Negative (black) battery terminal while the vehicle is running and if the vehicle dies then it's the alternator, if it stays running then it's the battery. Although this method isn't guaranteed it's usually accurate. DO NOT REMOVE THE POSITIVE terminal (red) from the battery while it's running. It could cause a spark and make the battery explode. Another way is to drive to Autozone or Advanced Auto and ask them to test it. They'll do it for free.
How do you tell if the alternator is gone in a 2000 E-250?
Start the vehicle.. and disconnect the positive terminal of your battery.. if the engine dies.. your alternater needs attention.
Why won't a 1991 Ford Tempo battery hold charge?
put a dwell tester on it and possibly add water to it by prying off the top small compartment and add it there . then if the battery isn't the problem disconnect the positive battery terminal from the battery and if the car dies it is your alternator
How to know if the alternator is out in a 1993 Pontiac sun bird?
An old quick trick is to remove the positive terminal from the battery while the car is running. If the car dies or runs very rough the odds are it's the alternator. A lot of auto stores will test the whole charging system for free.
What if your 18.5 hp dlt 3000 lawn tractor will not charge new battery?
Battery cables loose or corroded which is not likely with a new battery but check the ground connection and the connection at the starter. Charge the battery with a battery charger and then start the mower. Disconnect the positive battery terminal and if the engine dies the problem is with the charging system. Check all the wiring coming from the alternator located under the flywheel. If nothing is wrong then you will have to remove the flywheel and find out what is defective. Can be a diode has failed or the alternator is defective.
How do you tell if the alternator is outon a 1999 kia spehia?
A quick way to tell if there might be a problem with an alternator is to remove the positive side battery cable from the battery while the vehicle is idling. If the engine dies, odds are there is an alternator problem.
How do you check if my alternator is bad or my batter is bad in my car?
If the car won't start, jump it off. While it is running, remove the positive cable from the battery. If the car dies, then your alternator is bad. If it keeps running then you may have a bad battery.
How do you reboot a car computer?
Disconnect the negative terminal of the battery Leave it disconnected for an hour. (The amount of time it takes to replace the battery). Reconnect the negative terminal of the battery. This works because a transient (voltage spike, noise) is generated when the terminal is reconnected. This is not necessary when the battery is replaced because the negative terminal is normally the last connected. However, when a car's battery dies in storage for example and is recharged with disconnecting the battery, the car might not start because the computer is not running.
Dash Lights Going on and off Headlights dim when driving along.?
I'd check your alternator. Disconnecting the positive terminal while the engine is running will tell you. If the engine dies when you disconnect the battery, it's your alternator. If it keeps running it's something else, like your battery. I had the same problem.
When you connect the positive to the negative and the negative to the positive does the battery dies?
If you connect the positive and the negative end of a battery directly with a cable, (1) you'll get dangerously high currents, and (2) the battery will quickly run out of energy. The battery itself might also get damaged, due to the high currents.
How do you check the charging system on a Lincoln LS?
with the car running disconnect the negative terminal from the battery if engine dies alternator is no good
Do loose battery cables cause car to go dead?
No, the alternator takes over for the battery once the car has been cranked. Try this, start the car; remove the positive cable from the battery; if the car dies, then you have a faulty alternator. Of course it makes sense to make sure the battery cables are tight at all times.
