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First use a digital volt meter to check the voltage at the battery with the engine not running. You should read 12.6 volts DC if the battery is fully charged, 12.4 at 75% charge, 12.2 at 50% charge, 12.0 at 25% charge, anything less and the battery is, for all intents and purposes, dead. If it does not have enough charge to start the engine fully charge it with a battery charger. If it will not take a charge it is defective. Once charged start the engine. You should read 13.5 to 15.5 volts at the battery with the engine running. If you read less than 13.5 volts the alternator is suspect and more than likely defective. Or you can just drive the car to your nearest auto parts store where most will check the system for free.
What else can I help you with?
How do you tell if the alternator is outon a 1999 kia spehia?
A quick way to tell if there might be a problem with an alternator is to remove the positive side battery cable from the battery while the vehicle is idling. If the engine dies, odds are there is an alternator problem.
Battery light was on and checked to see if it was the alternator and the alternator was bad have not fixed the alternator and now the battery light has not come back on what could be the problem?
There is no problem...the problem was the alternator. You have fixed the problem.
How do you tell if your alternator is bad in your 1996 dodge neon?
you could pull off your positive battery cable if it stalls out then you alternator is the problem
How do you repair the problem if car battery is not charging properly?
take the car to a repair shop and have them put a battery tester on it. it may be the alternator or the battery the tester will tell
How do you tell if it's the alternator or battery?
Have a shop load test the battery.
How do you tell if it's the alternator or the starter that is bad?
Test the battery with a digital voltmeter. You should get a reading of 12.6 V if the battery is fully charged. If the battery is fully charged then you know the alternator is functioning properly and your problem is more than likely a defective starter.
Car battery wont charge?
If you can get the vehicle to your local auto parts store, at no cost they can test the charging system and tell you what the problem is, be it a bad battery or alternator or what ever.
How can you tell if you your problem is the alternator or the battery on a 1993 Ford Tempo?
to make a quick check -- start car - disconnect the positive cable at the battery as it is running - if car stalls the alternator is bad if it stays running the battery is probably too weak to hold a charge. (daddmac)
What is the problem when your change the alternator and its still not charging the battery?
Obviously check the battery. Anyway, if the alternator, battery, and wires connecting them are good the voltage regulator is next on the list.
Can a battery with to many cold cranking amps burn up an alternator in a 2001 vw bug?
"Big" Battery Damage Alternator?No, it should not damage the alternator. If this has happened it's probable that the problem is somewhere in the wiring circuit connected to the battery and alternator.
What is wrong with the battery if it wont stay charged with a new alternator on a Chrysler 5Th avenue?
Your alternator is probably rebuilt and not really new. I have had this problem several times and I have bought a new battery and alternator. The alternator keeps your battery charged and powers your electrical system, so even when driving you can lose all power in the car from the alternator draining your battery. Take the battery and alternator to an auto store and they will test both for free. Ask them about the difference in a rebuilt alternator and a brand new one. This is a very common problem.
How do you tell if you alternator or battery is the problem?
Charge the battery overnight and have it load tested at a parts store...its free. Or carefully remove the positive (red)cable while the engine is running. If it quits then its your altenator.
