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What is it???

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Old Jan 16, 2010 | 08:46 PM
  #1  
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Default What is it???

OK...haven't started my 95 in 6 weeks because of the snow...all covered up for the winter....but today, all the snow in the drive was gone, so I wanted to back it out and just let it run for a bit......battery totally dead (4 month old battery) I mean, not even an interior light....

I have been told that C'4s have a thirst for the battery, but just what is it in the car that will drain a good battery down in such a short span of time?? I mean hell, the Harley even started after the same amount of time
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Old Jan 16, 2010 | 08:50 PM
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It's not an uncommon problem in C4's to have a current draw somewhere in the car. Also your battery might just be worn out and not able to hold a charge for very long. This time of year is when a tired battery is going to give out.
If you have a multimeter you might be able to track down where the current draw is coming from.
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Old Jan 16, 2010 | 09:02 PM
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the memory on the radio. the headlight motors seem to have constant draw. cold weather. the computer memory.
a battery needs to stay relatively warm.
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Old Jan 16, 2010 | 09:07 PM
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Heated garage. Battery stays warm
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Old Jan 16, 2010 | 09:10 PM
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I don't have a answer for you but this something I've seen a number of times on the Forum. My 93 would drain down in about 3 or 4 days until I replaced some bad switches. Now I try to start it at least once a week if I'm not driving it. A battery tender would be a good investment for you if your going to let it set that long. Maybe one of the guys can tell you how to trace this down and get it fixed.
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Old Jan 16, 2010 | 09:18 PM
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6 weeks is more than enough time to drain a battery, to store a vette you should either put a battery tender on it, charge it once a week or disconnect it..
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Old Jan 16, 2010 | 09:44 PM
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C4s aren't as bad as C5s for battery draw, but I would still suggest getting a battery tender.
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Old Jan 16, 2010 | 09:51 PM
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Originally Posted by ccrazor
6 weeks is more than enough time to drain a battery, to store a vette you should either put a battery tender on it, charge it once a week or disconnect it..
There are many systems that use up the battery. Alarm, like was said before, ccm memory and such. If your car is locked in the garage, you can just disconnect the neg. cable to keep your battery from draining, you'll have to reset your radio and clock etc.

But the best thing is to start it and run it up to temp at least once a week. This keeps everything oiled up in the engine and takes out condensation that might form in the fuel lines and engine. When you can, you should take it out for a drive. This will keep the suspension parts and brakes and general drive train from having the old sitting too long type of problems. Not to mention preventing your tires from flat spotting. We're gonna have some nice weather coming up this week. The road salt has done a number on the 3 coats of wax I put on her in Nov. Time to re-wax before the next batch of snow.
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Old Jan 16, 2010 | 09:52 PM
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check the door ajar switches. If they fail or don't make good contact you'll lose the battery charge in less than a couple of days.
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Old Jan 16, 2010 | 10:21 PM
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Originally Posted by Harsh20
the memory on the radio. the headlight motors seem to have constant draw. cold weather. the computer memory.
a battery needs to stay relatively warm.
you have to either disconnect it, or buy the quick disconnect, or it will die or al the least drain.
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Old Jan 16, 2010 | 10:33 PM
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Originally Posted by 92LRC
check the door ajar switches. If they fail or don't make good contact you'll lose the battery charge in less than a couple of days.


The passenger side switch was the main draw on my car and made a big difference after it was replaced. Mine was easy to know the problem because the interior lights flickered while driving.
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Old Jan 17, 2010 | 08:47 AM
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Before I put the vette away I throw on the charger and then use the quick disconnect. Every so often I hook it back up and run it (especially with the AC on).
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