If the car won't start, jump it off. While it is running, remove the positive cable from the battery. If the car dies, then your alternator is bad. If it keeps running then you may have a bad battery.
How to Tell If Your Car Alternator Is Bad Check related link below…
Unhook ur positive terminal on battery while car is running if car turns off while doing this u got a bad alternator
Check for a bad fusable link at alternator
no if the car doesnt start check the battery and the alternator and the starter.
Start the car and disconnect the negative battery cable. If the car dies, the alternator is typically bad... but, to be on the safe side, take it to your local parts store, like Autozone. they test them for free, and will leave no mistake about it.
Most parts suppliers like O'reily's or Autozone will check it either on the car or off. Quick way to check is with the car running, remove the positive cable from the battery. If the car dies, the alternator is bad.
Could be the alternator is going bad and check the charge level of the battery. Check all the fluids of the vehicle. But mainly it could be alternator to check that start the car and then disconnect the negative wire from the battery if car dies then alternator is bad if its going then it could be something else.
Turn car on remove positive battery terminal if car turns off alternator is bad
Apparently the alternator is bad or the battery is shot, take the car to autozone and get a free charging system check.
check the alternator for most cars the alternator is wat powers the car the battery is for accesories... a quick check for alternator wit out having to disemble it tunr on ur car disconnect the postitive cable on the battery if car stays on then the alternator is good and the actual battery itself might be bad
Typically you know your alternator is out when you have to jump start your car numerous times. A way you can test it is by turning on your car and while it's running discount the + terminal. If the car turns off then your alternator is bad. If the car remains in then alternator is good and possible bad battery. Hope this helps
Why do you want to unhook your battery??? If the alternator is good the car will continue to run, if it dies then you have a bad alternator this is why you would want to unhook the battery cable to check and see if you have a bad alternator