spiru

I have a 78 and something is draining power from the battery very fast! Anybody know where to check first?

Thanks!

Rocket Ron

cigar lighter :smash:

spiru

I wished but not likely since its been disconnected for the past 15 years. :)



:cheers: :cheers: :cheers: :cheers: :cheers:

BLT-71

Alternator ???????????????

spiru

Is there some way to test the aternator? It was rebuild last year.

BLT-71

I personally do not know how to test them. I usually take the car to Auto Zone and they test it for me with their equipment.
How quick of loss do you have?

spiru

If I start it every day, there isn't any problems, but 2 days or longer it won't have enough power to even crank over.

Nomad78SA

Can you give us some more info on what is happening, how long does it take to discharge, what is your amp meter reading while running and so on. Here is a link to the electrical maunual for a 78 that another forum member has posted.
Neil in Tenn
http://www.corvetteforum.net/c3/tune...l/index6.shtml

spiru

When its running the meter reads way over 12 amps.

LT1driver

how about bad battery, a cell gone bad or something like that. :cheers:

spiru

It's a new battery. I can't figure this out at all. Thanks for your help tho.

lou

Pull the fuse that runs you radio, courtesy lights, ect. and see if the problem goes away. These all have constant access to the battery. If it does, you can start looking at accessories on that fuse circuit. could be a place to start. lou

thamzid

Had the same Problem on my 81 and it turned out to be the damn little lights on the Vanity Mirror on the Sun Visor. Popped the bulbs out Solved that problem.
Later
Ken

QuickVet

just because its a new battery dont mean anything. i got a new battery and thought that i had eliminated that as a cause to my lose and it turned out to be i switched a good battery for a new bad one :smash:

PatsLs1vette

hey chaz you got mail...a little instructions on what to do.

DEVOUR

I just solved that problem a couple of weeks ago on my 82. It was the drivers side door switch. It would not leave the dome light on, but it was draining the battery in about two days. I got lucky cause I very faintly heard the door buzzer while reaching in through the window (doors closed) to plug in the battery charger.

I would pull the accessory fuse and see what happens. I'll bet it puts you on the trail.

Good luck!

LAvetteman

Only 2 things I have ever seen cause this:

Delay box for interior lights.

Faulty interior bulb that wouldn't light, but would drain battery.

spiru

Thanks I got it.

Last week I had my amp meter out and checked the wiper motor while the keys where out and I had a little drain there but not enough to cause what I'm experiencing now.

2ND77

Two things to do that I can think of. First....if you have an amp meter that you can hook in series with the battery, that will tell you if and how much of a drain you have. Then, with the meter still connected, start pulling fuses as lou said and look at the meter every time you pull one. If you cant find it with a fuse, look at connectors under the hood that do not go to the fuse box. Disconnect them....look at thr meter...and then reconnect. You should be able to find the problem this way, or at least narrow it down alot, that is, if you didnt get a bad battery afterall. It does happen.

Ron

2ND77

Oh. One more thing....(made this mistake once) Make sure all lights are off and the doors are shut and the key is not on. If not, you will see the draw from those sourses too.

Ron