Battery drain just setting

boggzboyz

Registered User
Battery light comes on when reving engine and new battery completely dead overnight any ideas just put in IC fan with toggle switch hot from battery to switch to fan ground from fan to core support ground
 
Disconnect that IC fan power line at the battery, see if it keeps up overnight.

If not, then it's time to backtrack over what you did connecting it.

BIG hint: Try using a relay, instead of switching the IC fan directly.

RwP
 
#1. Charge the battery.
#2. Start the engine and measure the alternator output with a multimeter to determine whether or not it is the culprit.
#3. If the alternator isn't to blame, it's time to find the parasitic drain.

*To determine if you have a parasitic drain:

With the engine and key off, remove the negative battery cable from the battery. Place multimeter leads on both the negative post of the battery and the negative cable end, with the multimeter set to read current. If you're seeing a value over 25-50mA, something is drawing too much current. Pull one fuse from the panel at a time, starting with the small fuses, to isolate the circuit that is causing the drain. From there, you can check each device on that circuit to determine the source of the drain.
 
What did the results of the test I outlined above tell you? Where did you trace the parasitic drain to?
 
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