Question about 2000 Chevrolet Impala
My car just out of nowhere started to drain my battery I took the alternator to get it checked thinking it was the problem but found out it wasn't it , had to get a brand new battery and installed everything back together . It was fine for maybe a day but then it started to do it again and I'm thinking it just mugshot be a fuse or a relay
Something is staying on while its not running, could be a light somewhere that should be off thats not. With a good alternator and a brand new battery there should be no reason for the battery to just die within a day unless something is staying on. Pin point what is staying on and we can go from there
Posted on Jul 22, 2012
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Posted on Jan 02, 2017
No, corrosion will not cause a battery to drain, even if the corrosion is on the terminals. Several factors can cause battery drain, I would first have the battery tested to see if the battery it self is not bad. If the battery is good, then the most common is a short. All most all new cars have a certain amount of drain,(measured in milivolts) this drain is for clocks and computer memory's, and it would take several days of a vehicle sitting for the battery to be drained. Don't immediately assume you have a problem if you see 2-6 milivolts of drain on a battery with the key out, now if your battery is being drained after being parked over night, you have a problem. The easiest way to pin down the problem short is to disconnect your positive battery cable from the battery, take a 12 volt test light and clamp one end to the positive cable, and hold the probe to the positive post. Now if you have a short the light will come on. Have someone help you by pulling the fuses one at a time. If when a fuse is pulled the light goes out you have isolated the short to that system. If you pulled all the fuses and the light never went out try disconnecting all the wires from the alternator, 9 times outta 10 do this will let you know where your short is. If the system is not critical like power locks some people just leave the fuse out.
Posted on Mar 05, 2009
SOURCE: Chevy Malibu Check Battery Light
the problem with my malibu was the plug going to the alternator. i went to the junk yard and cut a plug end off the wiring harness and replaced it on mine and it's been working fine. i don't know why it drains the battery with the broken wire in the plug, but it did. i found the problem by wiggleing the wire while my wife watched the dash for the battery light to go out. ken!
Posted on Oct 28, 2008
Hello! You'll need a multimeter set on the 50 volts dc scale. Pull the 10A fuse for ECM/IGN...Check for battery on the feed side of the fuse with the key on. If you read 12 vdc then battery is present at the fuse block. If battery is present at the block...carefully pull one fuse at a time and, rather than seeing if it's blown, check fuses with a meter. Set the meter on the X10 ohm scale. With battery at the block; Fuses are blown at the inside block.
If there is no battery coming to the fuse block inside the car; Go under the hood and check the fuses in the main fuse block. Check in the same fashion that was explained earlier.
I believe that the high amperage fuses, as in 60 or 80 amps that feed the ignition and supply battery to the inside fuse block are blown.
Also check for battery at the starter motor. This is a direct supply from +post on the battery itself. If no battery is present there may
be a fusible link installed. Disconnect the positive cable from the battery; Again use the ohm meter set on X10 scale and check to see if this cable is open. A fusible link may be installed between main battery and the red wire that runs through the firewall into the inside fuse block.
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Posted on Dec 21, 2009
, do a simple test on the charging system...check battery voltage. should be 12v or better. start engine & check volts at idle, no accessories on. volts should read 13.5 -14v. Turn on all accessories(including headlamps on high) volts should drop slightly but should not creep down. Definitely not below 12.5. If voltage drops lower than 12.5, the regulator (in the alternator) is not working. either change regulator or change entire alternator. Alternator drive belt should have sufficient tension so that alternator cannot be turned easily by hand. If it can, check belt tensioner.
Posted on Mar 18, 2009
tell you what you do, because i think the alternator may be the problem, remove all the wire from that connection and tape them together good, and see if batt still goes dead, if it doesnt then replace alternator. hope this helps.
Posted on Jan 10, 2010
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