Can a car alternator fail if the battery is dead?
Alternators can and will fail if they continue to run at full charge. If it is trying to charge a battery that is defective and won’t take a charge it will fail. You’re talking about trying to charge a defective battery, not a dead battery – there is a difference. Get your terminology streight before you accuse others of having their facts wrong.
What happens to an alternator if the battery is shot?
If the battery is shot it’s a risk, but of the battery is good and the lights were left on, it should recharge without incident to the alternator. I suspect that while the initial load on the alternator of any drained battery is high, a good battery will charge and the load to the alternator will go rapidly enough that there should be no damage.
Can a bad alternator Fry a new battery?
The flip side is that a defective alternator can fry a battery, also. So replacing a battery and having the new one go bad soon afterward might mean the alternator was bad to begin with. A depressingly large number of people don’t test the charging system after replacing a battery.
When did my Chevy Silverado battery go dead the third time?
The third time March 11 2011, the battery went dead the truck had to be pulled in to the dealer AGAIN and I had to pay 175.00 for the tow and the battery. The dealer claimed the battery was not covered under the warranty.
What causes a car battery to run out of power?
1 Your battery may have reached the end of its service life (often 4 or 5 years). 2 A parasitic drain is depleting battery power. 3 A problem in an electrical system is affecting battery power.
How to know if your car battery is leaking?
Test for Battery Leakage 1 Set your voltmeter to a low setting on the DCV voltage scale. 2 Connect the black meter lead to the negative battery terminal. 3 Touch the battery top at different places with the red meter lead. 4 If your meter registers even a small voltage at any point, your battery is leaking its charge. You need to clean the battery.
When is it safe to replace a car battery?
No battery should be replaced unless it has been tested to verify if it is GOOD or BAD. Advertisement By Larry Carley on
What happens if an alternator is charged at full charge?
An alternator that continues to run at full charge, trying to charge a defective battery, will fail. It can overheat and take out bearings, diodes and regulators. Get your facts straight before weighing in on something you know nothing about. Alternators can and will fail if they continue to run at full charge.
Can a weak battery destroy an alternator?
A weak battery can adversely affect your alternator in the long run. Imagine a scenario where your car broke down and won’t start. You have a busy day ahead of you but you’re a car guy and your vehicle is a priority to you.
Can having the wrong battery damage the alternator?
A weak battery cannot have any effect on alternator, but a poor or weak alternator can deteriorate the battery very quickly. A broken battery also has an effect on an alternator as it puts more pressure and stress on the alternator while working and sometimes destroy the alternator as well.
Would an alternator run down a battery?
An automotive alternator is a device that converts power from the engine into electricity, which is used to charge the car’s battery. In some cases, however, the alternator can actually drain the battery, causing significant problems. An alternator that’s not providing enough power can allow a battery to run down.
What causes an alternator to go bad?
Reasons an Alternator Would Go Bad Failing Diodes. An alternator is essentially composed of three smaller alternators that each supply varying levels of power. Defective Bearings. Alternators revolve on high-precision needle bearings that you generally cannot hear. Insufficient Field Voltage. An alternator must have a field voltage of 12 volts to produce electricity. Worn Belt.
What happens when the diodes in an alternator go bad?
Alternators use diodes to rectify alternating current produced by the alternator into direct current. When one or more diodes go bad, the alternator can cause all kinds of problems. AC voltage leak can cause your lights to dim and drain power from your battery, for example.
What does it mean when your alternator says your battery is dead?
Weak or Dead Battery The alternator has to replenish the car battery’s energy. When you always have a weak battery, it could also mean that your alternator is not adequately charging the battery as it should when the car is running. However, be careful to confirm that you don’t have a weak or dead battery before blaming the alternator.
Can a brand new car battery go dead?
A brand new battery will go dead quickly without proper charge from the alternator. The alternator and battery run hand-in-hand to keep your car going. READ 开车朋友必看: 除了WAZE以外，手机里必备的APP!
How long will a car battery last without an alternator?
Q: How long will a car battery last without an alternator? When you drive without a functioning alternator, your vehicle can only go for around Twenty-five miles before the battery is empty if you had a fully charged battery. Twenty-five miles translates to a maximum of approximately 30 minutes of driving.
What to do if your alternator goes bad?
If your car starts easily, but the warning light comes on straight away, it is most likely the alternator. Modern cars will automatically shut down non-essential equipment such as air conditioning, ABS, and even the airbags. This is to ensure as much power as possible goes into running the engine.