Hi, I have a 96 buick century,if i dont use it battery goes dead

Go under the car to reach this bolt.

you most likely only have a bad idle control sensor. location" on top of your engine,look for a round silver canister about the size of a D size battery with 1 electrical plug in,if by chance that you cannot locate it,take it to advance auto parts.they will be happy to assist you.it only has 2 screws that hold it onto your air induction/either a 10mm bolt or an 6mm bolt with 1 plug in.cost is about $20.00 it takes 15 minutes to replace BUT make sure to disconnect the negative cable to battery before you remove it. then after it's replaced,reconnect before you re-start your car. thank you for choosing fixya.com

Mine does same thing but occasionally will stay charged for up to 5 days! So far no answers except to hook up the charger every few days...

try checking the fuse then the wiring and at last the motors :) at all hope its just the fuse if you need any help just email me at anytime

I would check the water level in the battery, also there could be a ground problem somewhere.

It refers to the evaporative emissions canister and a problem of maintaining a certain level of vacuum in the fuel tank

sounds like the battery got run down so far that it wont hold a charge-maybe take the battery out and take it to a parts store that can "load test"the battery-some testers can actually test the battery even if its dead-also when u charge a battery u have to make sure the clamps from the charger make a good connection. i read somewhere that everytime a battery goes dead it shortens the life of the battery-FYI most batteries last from 4-5 years if there are no other problems with the car.hope this points u in the right direction.

I spent endless time on this same problem on my 1992 Wagon. I changed out the computer but no help. It turned out to be the top dead center crank sensor that tells the system when the crank passes TDC. It is a small magnet essentially about the siz of a pencil eraser in the flywheel. it was cracked and occasionally would not "sense" and the car would just quit. troubleshooting was a nightmare because the computer diagnostics on the 1992 are less capable than the 1996 model. Anyway that is a relatively inexpensive fix and easy to know if it worked. Let me know how you solve this.

LT

Hi Lester,
Its a Buick 3.1 L V6.

Thank you, Kent

check the connector and make sure it has a good ground if they are good try finding another fan and swaping them