Question about Dodge Dakota
Battery drains and the battery is good
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Posted on Jan 02, 2017
SOURCE: Battery drains overnight.
Alternator. The regular inside the alternator has an open diode. Disconnect the battery overnight and it will start the next morning. The alternator will need to be replaced to fix the problem.
Posted on Dec 23, 2009
SOURCE: something is draining my battery
This response contains troubleshooting procedures designed to locate the cause of an overnight power drain resulting in a dead battery, It assumes the charging system is working.
The first (and easiest) test I run is on the battery.
When you are done using it for the evening, pull the Negative battery cable.
In the morning, re-connect it. If it's dead again, the battery need replacement. This does not necessarily mean you found the problem.
If it starts, the battery is ok. It's time to look for the power drain.
With the ignition off, ensure the systems that should be off actually are off. For example: does the radio still come on? Wipers? Etc.?
In the same vein, has anything new been installed lately?
The next test is a lot more tedious. You will need a test light, needle nose pliers (to pull fuses) and the proper tools to remove the negative battery terminal (again).
This procedure will allow you to focus in on the problem area. Let me know what you find out.
Hope this helps
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Posted on Jul 24, 2008
SOURCE: battery drain
650 milliamp is too much. The Beetles had problems with the microswitches in the door latches that tell the convienience module if the doors are opened or closed. If it doesn't see the right signal the computer wont go into sleep mode an it will stay powered up draining the battery. VW techs can check the output of these switches to see if they are working right with their scan tools.
Posted on Dec 11, 2008
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
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