what is causing my 91 buick century car to drain my battery. you can jump it off and when you cut it off it wont start back. something is draining the battery. would you know what my problem is.|||yes, your problem is more than likely just an old battery, or a battery that has been drained too many times. The solution is you need a new battery.
If you cant afford a new battery, the other option is to buy sulfuric acid and distilled water. First shake the battery around real good to get any material in the battery loose. then pop the drain plugs and pour the old acid out of the battery. then refill the battery with a half and half mixture of acid and distilled water, then charge for a couple hours and see if it holds charge.
Be very careful the acid will burn holes in your clothes and if on your skin long enough will do the same to your skin.
It is not likely your alternator, because if you can jump start the car and remove the jumpers, and the car keeps running it means the alternator is producing enough power to run the car, but as soon as you turn it off you can not start it again, because the battery doesn't hold charge.
If the car dies soon after disconnecting the jumpers, without you turning it off then it would be the alternator.|||bad alternator|||you might have a bad alternator thats not charging. take car to autozone or other car parts store and they car run a battery/charging system test|||Have the battery charged fully first.
then have the alternator tested. it should be over 13.4 volts at idle|||if everything works ok while its running then the alternator is ok sounds like a bad ground cable , when you boost it to start you are getting ground from the boost source once started the alternator provides both hot and ground , otherwise the battery is shot which would explain why you need a boost to start but I would start with a good cleaning of the cable ends . if this doesant work have a mechanic or part store test the batt/chargeing system it only takes a minute most auto part stores will do it free|||I assumed that your battery is in good condition. Check your alternator, one of the components of the car's charging system. It might be the culprit.
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