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With the car or truck running disconnect only the positive side of the battery ... if it stays running that means the alternator is good if it dies then it needs replacing

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15y ago

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What causes the battery light to stay on and whining noise near the alternator?

Alternator is defective and needs replacing.


Why alternator charging low and battery dead after a while running?

If the alternator is not producing 13.5 to 15.5 volts it is defective and needs replacing.


1994 Nissan Altima battery wont stay charged?

Maybe your alternator needs replacing.


Why does myCar battery starts for about 3 days then goes dead?

Alternator is weak and needs replacing. Drive belt on alternator can also be slipping due to being loose. Check the alternator output at the battery with the engine running. It should read from 13.5-16 volts DC. Any less and it needs replacing.


If a vehicle idles up and down and the lights dim with the idle and when it is in gear the battery light comes on would that be an alternator problem?

Alternator needs replacing.


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there a little box on the back of your alternator called a regulator it needs replacing get it from your local scrappy


How can you tell if the catalytic converter needs replacing?

tap on it and if it rattles ,its done


How do you replace the alternator on a 1998 Volvo S70?

were should i satart when replacing the alternator in a Volvo s70 1998 were should i satart when replacing the alternator in a Volvo s70 1998


2000 Chevrolet truck replacing alternator s10 rebilt alternator?

Disconnect the battery. Remove the air inlet tube. On some s10s, there is a bracket above the alternator that needs to be removed. Take off the serpentine belt. Remove the alternator wiring, then the bolts. Remove the alternator and install the new one.


Why if you play music or not your battery always down even if im driving when you switch off the car its down?

Can be the battery is defective and needs replacing or the alternator is weak and needs replacing. Have your charging system checked. Most auto parts stores will do this for free.


Why would a vehicle have low revs?

elecronics need fixing or alternator need replacing elecronics need fixing or alternator need replacing


Why does your battery gauge run low?

my gauge reads 10 volts drive half mile it go to 8 Alternator is defective and needs replacing.

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