Check earth connection. Sometimes if wires aren't connected right, running the car will discharge the battery instead of charging it... ----------------------------------------- Check for a current draw by disconnecting the negative cable at the battery and hook a test light between the cable and the battery. Remove fuses until the light goes out. While doing so remember to depress the door jam switch as it will show a current draw.
Had the same problem. Bought a re-conditioned alternator, turned out it was bad. Usually if battery draining, it's alternator or battery or both.
A slight possibility but not likely
Could be a faulty thermostat switch in the radiator !!
Defective alternator, loose alternator drive belt, dead cell in battery, or something is on pulling power from the battery.
Yes. Otherwise you will drain the battery through the ignition points, burning them out prematurely or even welding them together.
Dead cell in the battery, or something is on pulling power from the battery. Any light on the vehicle or any relay that is stuck. I am assuming you have checked the alternator and it is good.
depending on the year I have had issues with a 1990 and a 1992 grand caravan problem was the light in the glove box the contact would turn the light on periodically draining battery
Then either something is on draining the battery or the battery has a dead cell draining all the rest and must be replaced.
A short will not drain the battery it will blow a fuse. It may be the battery has a dead cell, or some light is on draining the battery. It can also be a stuck relay.
You may have an electrical short where there is a bare wire coming into contact with metal and draining your battery or you may simply have a light on that's making the battery's voltage to drop . An experienced mechanic will be able to conduct several diagnostic tests to determine the cause .
If your battery is good and you know your car is draining it then yes, disconnecting your battery from your car will keep your battery charged for much longer than 3 days. Your battery should stay charged way longer than 3 days in normal conditions being hooked up to your car. You should get it checked out and figure out what is draining your battery so fast.
Possible open circuit from the starter relay or solenoid that keeps draining it or some accessory in the car may need lots of power to keep memory function, ex. gps, stereos, DVD players