draining battery
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Joined: Jul 2004
Posts: 115
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From: illinois
Car: 1982 z28
Engine: 350
Transmission: th350
draining battery
something is draining my battery and i cant seem to figure it out i gotta disconnect it when i park it for the evening just give me a reasonable place to start looking for the problem
First thing to do is connect up digital (preferably) volt meter in series with either battery cable and measure the mA reading with ignition off. Set the DVM to mA. (connect one lead to the battery cable, the other to the battery post. It doesn't matter on polarity)
Then, start pulling one fuse at a time to see if the reading goes down. If it does go down, the problem is in that particular circuit.
Let us know what you come up with. We can take it a step at time, depending on what you find
Larry
Then, start pulling one fuse at a time to see if the reading goes down. If it does go down, the problem is in that particular circuit.
Let us know what you come up with. We can take it a step at time, depending on what you find
Larry
Member
Joined: May 2003
Posts: 264
Likes: 1
From: SillyCon Valley, CA
Car: 83 Z-28 (Original owner)
Engine: 305 CC-carb
Transmission: Richmond 6-speed, Rear:3.73
Believe it or not, a test light works best when troubleshooting this kind of problem.
Do this with a fresh charged battery:
Remove one of the battery cables and connect a 12 volt "test light" between the battery and disconnected cable. Light will be ON of something is draining current from the battery. Make sure everything it turned off, including the interior lamps (close the doors), then pull one fuse at a time. If pulling a fuse makes the test light go dim, then you've found which circuit is draining your battery.
Do this with a fresh charged battery:
Remove one of the battery cables and connect a 12 volt "test light" between the battery and disconnected cable. Light will be ON of something is draining current from the battery. Make sure everything it turned off, including the interior lamps (close the doors), then pull one fuse at a time. If pulling a fuse makes the test light go dim, then you've found which circuit is draining your battery.
Originally posted by 83_1/2 L69
Believe it or not, a test light works best when troubleshooting this kind of problem.
Believe it or not, a test light works best when troubleshooting this kind of problem.
Larry
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raymondandretti
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Sep 27, 2015 06:43 PM





