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If the alternator is not charging the battery, then it will eventually go dead
If the voltage regulator (in the alternator) is defective it will eventually kill the battery Check the alternator with a voltmeter
A fully charged battery (without engine running) should read approx. 12.8 volts With engine running should read 13.8-14.2 volts
What else can I help you with?
What is the problem with my dodge Ram 1500 if it will crank but won't run?
Low battery (bad battery or alternator) or bad starter, most likely.
How do you wire alternator to a battery to test alternator?
run it and then disconnect the negative wire from the battery if alternator dies its bad.
Will battery idiot light come on if battery is low but alternator is ok?
No. If the alternator is working fine, the battery power is not used.
Why does the battery voltage gauge on my 1991 Ford F150 run low?
alternator probably needs replacing not charging battery or bat is dead and not taking charge
Can you eliminate alternator from car?
you need the alternator to charge the battery with no alternator when the battery drops to about 10 volts car will not run at all.
Does the motor charge the battery when you run the engine?
No, the alternator recharges the battery. Of course the alternator is turned by the engine.
Would a bad alternator make a vehicle run rough?
Alternator versus Engine Performance IssuesIn and of itself, a "bad" alternator will not effect the engine performance.That said, IF the alternator is not properly charging the battery, and the BATTERY capacity gets low enough, then the very low power can result in very low spark production at the spark plugs, which will fail to dependably ignite the fuel, AND THEN result in "rough," or no running.So, a "bad" battery itself does not cause rough running, but can lead to battery depletion which can.
HOW MANY AMPS WILL A AUTO ALTERNATOR INVERT TO 120 VOLTS AC?
The inverter isn't run off the alternator... it's run off the battery. The alternator simply recharges the battery.
How long will your car run with a dead alternator?
It will run until the battery is too low to support the engine systems, could be 10 minutes or several hours.
Will battery lose power if alternator is bad?
Yes, the job of the alternator is to recharge the battery and run all the electronics when the car is in use. If the alternator is defective and not putting out the required voltage to keep the battery charged it will soon run down.
What do car batteries run?
-- Answer -- The battery in a car runs ALL the electrical systems in that car. The alternator only charges the battery. If you run a car without the battery in place you will ruin the alternator. Phil
How long can you run your car with out a alternator belt?
Until the battery gets low enough that it will no longer provide enough spark to excite for combustion.
