make sure ALL lights are switching off when car is closed up for the night...also, new radio system? is the Amp staying on all night? also, an old test is to disconnect the negative battery cable and connect it back up...but use a test light to make the connection...in other words extend your negative cable with the test light and touch it to your negative terminal... if the test light bulb glow, it shows there is a draw on the system(have everything turned off while doing this) when the light comes on something is on and drawing power...start disconnecting fuses...when you disconnect the cicuit that is causing the draw, you'll be able to pinpoint the problem... also... ...everyone should have a manual for their vehicle(parts store or dealer), and a local library should have professional shop manuals available in the REFERENCE section for free...make copies of the appropriate sections...read up and good luck :) Dead short somewhere. Test by turning off everything (even dome light, clock etc) pull fuses if you have to. Disconect pos battery terminal. Put 12v test light between battery and battery cable. The brighter the light burn, the worse the short. Isolate circuit by pulling fuses one by one.
A partial earth
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.
your alternator ain't charging your battery or a bad connection draining the battery
could be alternator or charging circuit or could be anything got to do with the battery when its draining out loose connection terminal
There are a few things that could cause this problem. It could be the wiring to the alternator, the alternator solenoid, or the wiring.?æ
Could be an older battery that can't hold a charge any longer Could be loose or corroded battery cables not supplying a sufficient charge from alternator Could be a weak alternator not charging battery Could be excessive parasytic load drain to battery ( a fully charged battery should be able to hold a charge for 21 days of inactivity) Could be a hidden accessory left on draining battery (i.e. trunk light, glove box light, etc.) Could be a defective voltage regulator not opening on engine shut down draining battery.
Try disconnecting the alternator, could be the diode pack
Something is draining the battery. Check all lights. Glove box, trunk, etc. Also check the power window switch.
Something is usually on that you don't know about like an alarm could be draining the battery. However, If its not starting you should check the starter though. It will make you think the battery is bone dead.
The battery is worn out and needs ot be replaced depending on the mth warratny it has or the alternator is going out and is draining the battery . A simple check may be the battery cable . take the positive battery cable off while running as well if it dies it's the alternator .
If the alternator is installed incorrectly, yes, it can drain the battery.
something is draining the battery. a new battery will last a couple days if just starting the car. even if your alternator is bad.
It could be any number of things, from a faulty diode inside the alternator (the alternator could be working reasonably well but still have a bad diode) to a sticking relay. Sometimes those types of problems can be difficult to find, especially since they are often intermittent.
Don't believe a word AutoZone tells you. My battery died so I went there and they tested my battery and alternator and told me it was the battery. So I bought a new battery and 2 days later, dead again. Went back and they tested again and THIS time, it was the alternator. I went nuts on them and ended up getting both my battery AND alternator for free for their mistake that left me stranded at 12am.
A dead cell in the battery will cause it to loose it's charge overnight. The only fix is to replace the battery. Any light that is staying on will drain the battery. Also a stuck relay will drain the battery.
could be the alternator. could be the battery, the alternator charges the battery but does not stop the battery holding a charge.could also be a bad starter motor. take alternator off and have it tested. most places will test for free
Is the battery being charged by the alternator? You should see 13 volts or higher while the engine is running, otherwise you will need to test the alternator. another answer: the alarm system. get it disconnected by a mechanic--mine was constantly draining the battery on my 95 pathfinder.
There is no problem...the problem was the alternator. You have fixed the problem.
needs a coil or distributor it could also be that the alternator isn't working and the car may be draining the battery every time you drive it
Are the battery wires corroded? If they are, they may not be getting a good connection.
usualy if the alternator is not defective then its the battery. you should start by cleaning the battery post. then you could check the terminal wire that runs from the battery post to the alternator. if thats not it you should check the ground on the alternator.
Loose or worn fan belt would cause alternator not to spin fast enough to charge battery. Worn bearing in alternator could be causing it to seize and causing belt to slip
Probably loose drivebelt. or alternator belt of it is seperate.
the batteries only serve to start the car and the alternator. I'm not sure if it would be your alternator but it's not the battery.
My advice is to charge the battery with a battery charger before starting the engine. You will be putting a heavy load on the alternator if you allow it to charge a dead battery. This could damage the alternator.