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It doesn't actually drain the battery, but without a working alternator to recharge the battery it will only discharge as the car is operated.
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Why do the electronics on your Saturn SL2 shut off and then immediately on when you are driving?
bad connection from the battery or alternator
Why does your battery keep going flat in your corsa?
There are two common reasons for this. The first is that your generator(alternator) is not charging properly. The second is that your battery is going bad and not holding charge. If it is driving okay once it is jump started then your generator is probabably good and the battery needs to be replaced. I am betting the battery is going bad bc of a bad cell in it. Replace it and I bet it will be fine. A battery can fail with no warning whatsoever. It is more common that one might think. Hope this helps. Good luck.
Will the magnetic pull disappear when alternator is bad?
The way to test an alternator is to take it out and take it to a parts store, most will test it for free. If you want to test your alternator yourself you will need a volt meter. Start the car and have someone rev the motor to 2000 rpms and put your volt meter across the battery terminals ( pos to pos, neg to neg ). You should read 13.5 to 14 volts. If the reading is higher the voltage regulator is bad. If the reading is lower your alternator is not charging the battery sufficiently.
LT 1018 Cub Cadet will not crank at all and the battery is fine?
You either have a bad battery, or your alternator is bad. What is the age of the battery? Most last about two years. I would put a trickle charger on the battery for 24 hours, then see if your battery has charged. If not the battery is bad, and need replacement. If it does, you need to replace the alternator. When I had to have my Cub worked on, the local John Deere dealer did the work. They should be able to help. Jason Check this sight for how to test charging system: http://bit.ly/15nV9m dbost
Why do some batteries don't recharge?
I would first have the alternater tested to be sure that it's good. If it is then make sure you're getting voltage to it when you hook it up on your car. If you take jumper cables off and it dies you're not getting voltage to the alternator. You could have a bad battery and if you're alternator is working right the car would still stay running even if you take jumper cables off. Check all wiring going to alternator thats more than likely your problem also check your grounds and ground wire to the alternator. I had the same type of problem. It was a bad fusible link. I just ran a wire to the 10 mm bolt on the back of the alt. to the battery. This wire has to be thick though. And I would definelty put a battery charger on the battery. Also check all grounds to the motor.
Will a bad alternator drain a battery?
Yes
If you have a good alternator in your car why would it still lose power?
Bad battery, Parasitic drain.
87 Monte Carlo alternator is good still wont charge battery?
If the alternator is good then the battery is bad.
Why is the battery light on in your 1994 Chevy Corsica?
possible battery drain, either bad wiring or alternator issue.
Why would the headlights drain the battery on a 1996 Lexus with a new alternator?
The new alternator is bad happens all the time.
Why does your van seem to have an electrical drain if not driven for a day or so?
most likely it is a bad alternator or a bad battery.
Your 1997 ford ranger battery light is low and the battery keeps dying is it the alternator?
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt. If the battery and alt test ok than check the connections to the alternator and battery. You may also have a battery drain (something that is staying on and killing the battery)
Why wont your battery light go off when you changed your alternator and battery in your 99 mercury cougar?
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt. If the battery and alt test ok than check the connections to the alternator and battery. You may also have a battery drain (something that is staying on and killing the battery)
What would cause a large drain of a battery of 1998 ford escort?
Your alternator could be bad.
Why does may battery drain to car while driving?
Bad alternator or corroded or loose cables.
What causes battery drain in Honda rancher?
The main cause of battery drains is a bad electrical system. The electrical system is normally powered by the alternator and once the alternator goes bad the battery has a hard time holding a charge,
The battery charge light comes on and eventually your battery dies Then Replace the alternator and within a few days the light comes on again What could prevent a good alternator from charging the bat?
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt. If the battery and alt test ok than check the connections to the alt. You may also have a battery drain (something that is staying on and killing the battery)
