1995 Buick lesabre initially when driven would turn off on it's own would have to wait a while before would turn back on. Now car shut off and battery dead. Battery is new but test said alternator bad. Alternator was change then went completely dead again. Switched alternator again did not go dead but now when stop or turn corners the battery gage inside goes down to 8 then back up again. What could be the issue?
Sounds like loose battery terminals or a bad ground from battery to engine and frame
SOURCE: 2003 Impala - mystery problem???
you have something thats staying on with power when you shut the car off,first check all lights glove apartment,underhood,in trunk ,just because ther closed doesnt mean the light is off,check your car at night it might help to see the lights,if not another way is to take a multi meter to the battery and while some holds the meter pull out fuses in your fus box one at a time to see when the meter makes a change,this will help you to narrow down whats staying on and draining the power from the battery,if this helps please give me a fix ya vote
SOURCE: Charging system
change your battery cables and check all wires on the alternator for loose connections, expecially the grounds.
SOURCE: replaced alternator and battery still showing low/varying voltage
It soundls like you have a high powered sound system and you might have to step up to a higher amp alternator, that will give you enough power. Your battery should be fine too. Try to find out if the voltage regulator is built into the alternator and if not ask to find out where it is on the car and replace that to.
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