Battery discharge!
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#4
yup I'm with this post 100%-that way ya can try to isolate where the drain is coming from-just pull one fuse at a time and check to see which circuit is draining the battery
#6
Check your battery cables. I replaced my ground and the clamp on my positive. The positive wire looked new. I found that the positive at the starter had the insulation deteriorated from heat (?) back abount 3 inches. The bare wire was green. Apparently moisture created ground path to drain battery. I replaced the cable and battery holds charge and starter cranks like new.
#7
You need to use an ammeter between the negative post and cable to measure for a drain on the battery. You shouldn't have more than a couple hundred MILLIAMPS of draw. You'll need to pull the bulb for your underhood light, or have someone hold in the switch, everything needs to be off.
Also,
1. What is the voltage on the battery after charging it overnight?
2. What is the voltage on the battery with the vehicle running?
3. Pop off the vent caps on the battery (vehicle not running). There should be six holes with acid showing. Working from one side to the other, stick your voltmeter probes into adjacent holes and measure the voltages (i.e., 1-2, 2-3, 3-4, 4-5, 5-6). They should all measure about 2.1V or more.
Jason
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