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It's easy to distinguish if your car has a damage alternator or battery. The first thing you do is to start your car using your old battery then, once the engine is running then remove the cable from your battery, if the car still running that means the alternator is still charging but is it enough? so you have to measure the current that is being generated by the alternator using a multi tester. If the reading from the tester can reach 13 to 14 volts then your alternator is still good. If not then the carbon brush of the alternator might need to be replace or the IC.
If your car battery is already leaking then it possible that the plates are already damage, or if you have tried to charge your battery but the power is easily drained then it needs to be replace. i hope this can help ......... deep
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∙ 14y ago
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How do you know if you need a new alternator?
see this link How_can_you_tell_if_it's_your_battery_or_alternator_that's_bad
How do you know when you need an alternator?
A new battery or one that tested good is in the vehicle and the car is still losing power. the alternator is what charges the battery while the vehicle is operating.
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.
How do you know you need to replace your alternator?
Check the voltage at the battery with engine running. It should read 13.5 to 15.5 volts. Any less and the alternator is suspect.
Where is the alternator fuse on a 1997 expedition?
I have a 1997 ford expedition that the alternator is not charging the battery. Had the alternator tested and it was good the battery is new. Cant find the fuse for the alternator does anyone know where it is?
How do you know when the alternator is going bad?
When your battery does not get charge.
Will a van start if you need a new alternator?
As long as the battery is fully charged it will start no matter the condition of the alternator. Eventually the battery will run down if the alternator is not keeping it charged.
Do you need a new battery after installing a new alternator?
Only if the old battery is defective
Alternator indicator light in dash 2003 Mitsubishi Galant?
Don't know this cars specifics, but usually, if the alternator light is on in your dash (the battery symbol) it means that your alternator is not charging your battery or that your battery cannot hold a charge.
Do you need a new battery if you replace your alternator?
Generally, no. If you ran the car after the alternator died (which runs down the battery), you may need to trickle-charge the battery for a half-hour or so to bring it back up to a full charge, but most of the time the battery will not need to be replaced.
What is battery volts high?
Alternator is sending to much volts to battery. Suppose to turn itself off when battery gets to around 13 volts. May need new alternator.
I have a 1995 f 150 alternator is good but the battery will not charge what do i need to do?
Charge and load test battery- it may be not able to take a charge and need to be replaced You may a have blown fuseable link preventing alternator from charging battery
