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Yes, the alternator provides electrical energy to keep the battery charged. If the alternator isn't functioning, the battery will discharge and there will be insufficient electrical energy to operate the ignition and other electrical components. Understand that a battery is only an electrical STORAGE device. Electrical energy is produced by the alternator. The function of the battery is to provide electrical energy for NEXT time you want to start the engine. Once the engine is started, the alternator must take care of all electrical requirements of the vehicle as well as for providing enough additional electrical energy to replace electrical energy to the battery that was last used when the engine was started.
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Why is your 1988 Chevrolet truck with a 305 engine running of the battery only and not the alternator?
If it is running on the battery only then that means the alternator is not charging the battery.
How do you diagnose bad alternator?
Start the truck then disconnect the battery if it's still running the alternator is good
Why does battery die when your truck is running?
Your alternator is not recharging the battery and is defective.
How do you know that you need a new alternator 93 s10?
if your truck is running and you disconect the batery and the truck dies then its the alt
What would cause the wait to start light flash the truck not to hold a charge and the truck not to shift into OD 1992 Dodge Cummins?
alternator and od solonoid
How do you tell if the alternator needs replacing?
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
Egr 94 ford f 150 the truck is running and when you turn on the lights the truck dies immediately?
have the alternator tested or replaced
What will a new battery do for a truck?
As long as the alternator works and your charging system is correct, the new battery will start your truck and keep it running.
Why 1988 Dodge truck stopped running has new battery?
bad alternator ? its not charging the battery
What would cause the GEN light to come on on a 1997 Dodge Ram 2500 Cummins Diesel?
The Alternator is not putting out enough voltage. If you recently replaced the alternator with a "new" remanufactured alternator that one could be bad to your truck somewhere to get it tested.
What could cause the battery light to come on when driving and make a truck shut down and not start if it is not the battery?
Very likely an alternator problem; if the alt is not working soon the battery would be drained and the truck would shut off.
Will jump starting a dead truck battery drain a car battery?
If the donor vehicle is running and has a properly functioning alternator, no.
