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can the alternater make a car battery go flat when the car is turned off?
and can the alternater make the car run really badly
6 Answers
- the_boy_toyLv 71 decade agoFavorite Answer
On modern cars yes. If the alternator or starter have an internal short, then it is possible for the battery to be drained.
- 1 decade ago
Yes it can drain the battery if shorted but very rare to happen.if your battery is going dead over night check somewhere else first" trunk light glove box vanity mirrors or just a dead cell in battery"
- 1 decade ago
just about any electrical component/circuit COULD make a battery die. test the battery and alternator first. if both of them test out good, test for a parasitic drain.
- Anonymous1 decade ago
yes , to test the alternator remove the main + lead overnight then check bat. for proper volts in morn.
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- RobertLv 61 decade ago
Those people who mentioned "short" in their answers are correct.
Source(s): Electrical engineer by trade.
