Home
If a car's engine light went on battery dropped to 0 and now the car is dead is it the alternator or does it need a new battery?
Wiki User
Answered 2015-07-15 19:20:08
Hey Greg==It can be both. Try charging the battery first. If it won't take a charge replace the battery then take it to Auto zzone who will check the alternator for free. GoodluckJoe
Your Answer
Still Have Questions?
Related Questions
Would alternator connectors cause a battery light to be on?
yes if one of the wires was getting an earth from the alternator cover or rubbing off the engine the battery light is really an alternator light warning you that the alternator is not charging the battery
Does 1999 mercury mystique have an alternator warning light?
There is a battery light above the engine temperature gauge
Why does the battery light come on the battery and alternator have been checked and are good It's a 2000 dodge intrepid?
The battery light comes on when the alternator is either over or under charging. If the alternator tested good you have a wiring or computer problem. The engine computer is the voltage regulator.
Could a bad battery turn the check engine light?
A bad battery will not turn on a check engine light. A bad alternator however will. Have your vehicle checked and see if the alternator is putting out at least 13.5 volts and if so there may be another issue causing the light .
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
Can a motorbike light be run with no battery?
only if the engine is running and the alternator is in perfect working condition!
When your alternator goes bad will that cause your engine light to come on?
It can but the Battery light should be on. Check with a digital multimeter what the voltage is at the battery, If its 13-14 volts with the car running the alternator is probably o/k
How do you clear the battery warning light on dash after you have changed the battery?
Check to see if the alternator is working Connect a voltmeter to battery: Without engine running reading should be about 12.8 With engine running reading should be 13.8-14.2 If not bad alternator
Why would battery light go on in a 2005 caravan while driving?
Usually when the battery light comes on its the Alternator, or a bad wire from Alternator to battery, but id check Alternator first.
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.
Please explain the charging circuit in automobile. 1. How does the charging light comes on when ignition switch is turned on 2. How charging light comes on when alternator is not or less charging?
When the ignition is turned on, battery voltage passes down the wire to the alternator to 'excite' the alternator when the engine starts. When the engine starts and the alternator generates a voltage, the light is extinguised by the charging voltage cancelling out the battery voltage coming down the wire. If and when the alternator completetly fails the the light will come back on as there is no sancelling voltage. if the alternator produces a voltage lower than the voltage from the ignition switch then the battery light will glow.
Battery light on 94 Saturn won't turn off?
That is typically caused by a faulty alternator. Have the alternator tested; the light is indicating that the alternator is not providing a charge to the battery.
1999 Ford Expedition battery light on?
The battery light indicates the system is not charging. Have the charging system checked. If the alternator is not charging, the engine will quit running and leave you stranded.
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.
Battery light comes on and goes off while driving?
You possibly have a loose alternator belt or the alternator is weak. Check the voltage at the battery with the engine running. It should be 13.5 ? 16 volts. Any less and the alternator is weak and needs replacing. Also make sure the connections at the battery are clean and tight.
Why does your battery light stay on?
The alternator may not be recharging the battery .
Your battery light is on but your car has a new battery?
The the alternator is defective.
What would cause battery light to stay on in a 1998 ford taurus. I have had the alternator checked and was told it was good.I have replaced the battery and still battery light stays on?
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. The alternator should have 2 connections.
Why does the battery light come on a 1996 Ford Exployer after changing the battery and having the alternator checked?
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.
Why is the Battery light stuck on in my 1996 ford contour battery seems to be fine along with 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.
Why has the battery light come on after changing the battery alternator and starter motor?
Is it charging, if not have you checked wiring to alternator.
Why does battery light stay on in 1993 400 SC Lexus?
Likely the battery or alternator, but probably the alternator
Why would the battery light be dim?
It could mean weak batteries. If it gets better on starting and rev the engine, it is the battery otherwise it could be your alternator.
Why does the alternator light stay on?
Alternator not charging battery sufficiently? Check with a voltmeter: A fully charged battery should read approx. 12.8 volts without engine running. With engine running should read approx. 13.8-14.2 volts
What can cause a battery light to come on when the battery and alternator both test good on a 1992 SC 400?
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.
Still have questions?
