Parasitic drain!

[jalapeño]

I have a drain on the battery. I've pulled every fuse in the glovebox & still have it. I then pulled the maxi-fuse & Im fine. If its something prior to the maxi fuse..... what would it be?

 

[ransil]

disconnect the big wire off the alternator..alternator could be bad.

 

[Bundy]

I had drain and it turned out my belt was loose and the ALT wasn't properly recharging the battery... just a thought.

 

[jalapeño]

Thanks Randy, Ill check that next (wife's beckoning me to dinner). It's def. a 12. something draw.

 

[jalapeño]

Nope. I did notice the draw which is 12.3 drops to 8.3 when I disconnect the voltage regulator. 8.3 is still way too much though & will still drain.

 

[Viperwolf1]

12.3 or 8.3 what? Amps, milliamps?

Ignition switch and headlight switch aren't fused either.

 

[jalapeño]

Amps. I disconnected both of them as well. I don't have a clue what could be drawing that much

 

[HGM]

Wacha workin on????

Its going to be one of those, unplug every connector you can find, type searches. Letting us know what youre working on (modifications, EFI, Carb, etc...) will make a difference in helping suggest things..

 

[Bronc-n-Bird]

Geat troubleshooting method I found on the forum a while back: "The only other thing you can do is put a test light between the negative cable and negative post if it lights up you have a battery drain just start pulling fuses until the light goes out that will tel yu which circuit has the drain keep in mind most stereos and EFI systems will have backup power when the the key is off to keep there memory."

Here's the link:

http://classicbroncos.com/forums/showthread.php?t=66318&highlight=battery+drain


worked like a charm - for me it was the stereo.

Good luck!

 

[bronco loco]

and for me was a direct connection from the battery to the electric choke.

 

[Viperwolf1]

Amps. I disconnected both of them as well. I don't have a clue what could be drawing that much

4 amps from the voltage reg is excessive. It shouldn't have any drain with the key off. I would really look hard at the alternator.

 

[jalapeño]

No modifications..... unless you count trying to get your Bronco running a modification It was recently re-wired.

I disconnected everything I can think of. The only thing that drops the drawl is pulling the maxi-fuse. Without replacing the alternator, is there another way to look at at closer?

 

[Viperwolf1]

Without replacing the alternator, is there another way to look at at closer?

Did you disconnect the 10 ga charge wire? It's odd to have 12 amps of drain and even odder to have 4 of them from the regulator. I suspect they're related.