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2 new alternator battery well discharge while engine is running eventualy engine well shut down 0n 1990 GMC Safary?
Wiki User
∙ 16y ago
If you know the alternator is good and wired correctly then take a hard look at the voltage regulator. If the voltage regulator is built into the alternator then look carefully at the battery cables. I would bet your problem is the battery. If it is out of warranty just replace it. A trip to your local Auto Parts store where they can check the entire system, is in order.
If you know the alternator is good and wired correctly then take a hard look at the voltage regulator. If the voltage regulator is built into the alternator then look carefully at the battery cables. I would bet your problem is the battery. If it is out of warranty just replace it. A trip to your local Auto Parts store where they can check the entire system, is in order.
Wiki User
∙ 16y ago
Wiki User
∙ 16y agoIf you know the alternator is good and wired correctly then take a hard look at the voltage regulator. If the voltage regulator is built into the alternator then look carefully at the battery cables. I would bet your problem is the battery. If it is out of warranty just replace it. A trip to your local Auto Parts store where they can check the entire system, is in order.
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Do car batteries recharge as their used?
No, they discharge. The alternator recharges the battery when the engine is running.
Why is your 1988 Chevrolet truck with a 305 engine running of the battery only and not the alternator?
If it is running on the battery only then that means the alternator is not charging the battery.
What would make a car discharge besides the battery and alternator?
All of a vehicle's electicity using devices drain/discharge the battery, but during the time the engine is running, the alternaror is supposed to keep the battery recharged. If the engine IS running, but the alternator is NOT providing enough current to recharge the battery then ALL of the electricity using devices discharge the battery. Some of the "onboard" computers draw some slight amount of power even when the ignition switch is off, but they do not use enough power by themselves to significantly discharge the vehicle battery. Any electricity using device which SHOULD be turned off when the ignition is off, BUT... which due to some fault [such as a "stuck" relay for example] that keeps that device still turned on when the engine is not running and the key is off will also discharge the battery. Or, just leaving the ignition switch on without the engine running, or the headlights or parking lights on, or sound equipment left on will contribute to discharge of a vehicle's battery.
What can make a car battery die when running?
It sounds like the alternator is bad. If the alternator is bad the battery will not hold charge when running
Is there a way to determine whether it is your battery or alternator that needs to be fixed in a 2001 Bonneville?
If you can get your vehicle started you can then un hook the battery while it is running and if your vehicle stays running then your alternator is good. If it stalls and dies as soon as you unhook the battery then the alternator is not good.If you can get your vehicle started you can then un hook the battery while it is running and if your vehicle stays running then your alternator is good. If it stalls and dies as soon as you unhook the battery then the alternator is not good.
Your battery light is on in your 806 is it a new alternator or battery?
its the alternator if the car is running with a battery light on. but check fuses first
Could alternator drain battery when car is not running?
If the alternator is installed incorrectly, yes, it can drain the battery.
Will your alternator recharge your battery if you let it sit for a while?
If the engine is running and the alternator is good. If the engine is not running, no.
Why does battery die when your truck is running?
Your alternator is not recharging the battery and is defective.
Can running a new alternator on a half charged battery cause damage to either the battery new alternator voltage regulator etc?
Not likely, but running the engine with a dead battery can damage some alternators. Always fully charge the battery when installing an alternator.
Does an alternator charge a battery while the car is not running?
No , just when the engine is running
Why is the car battery charging at 14 volts running and 13.5 not running?
your alternator charges the battery while the car is running. The alternator actually puts out a higher voltage than 14 volts while it is running, but it is reduced by a voltage regulator (most of which are already built into the alternator housing), to prevent damage and premature death of the vehicles battery. While your car is not running, the alternator is not charging the battery, and the 13.5 volt reading you get is just the measurement of the voltage the battery is holding at that given point.
