Parasitic Draw
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Joined: May 2008
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From: I live in Tennessee
Parasitic Draw
Is .77amp acceptable parasitic draw on 08 f350 6.4L? This truck at work keeps going dead when it sits over night. The batteries were charged on 40 amp for one hour at the same time. One load tested weak and the other almost to weak. Both were full of water. It draws 1.5 amps for the first 30 seconds after hooking up the meter and then it gradually drops to .77 and holds. Nothing is on. All cell phone chargers flashlight chargers and strobe equipment is off. Glovebox light is off. I was told anything over half an amp is drawing the batteries down.
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
Is .77amp acceptable parasitic draw on 08 f350 6.4L? This truck at work keeps going dead when it sits over night. The batteries were charged on 40 amp for one hour at the same time. One load tested weak and the other almost to weak. Both were full of water. It draws 1.5 amps for the first 30 seconds after hooking up the meter and then it gradually drops to .77 and holds. Nothing is on. All cell phone chargers flashlight chargers and strobe equipment is off. Glovebox light is off. I was told anything over half an amp is drawing the batteries down.
I think you answered your own question. If they aren't your problem, then you have to start there and work forward. Do it before you lunch the ficm.
Hotshot
Joined: Nov 2000
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From: Pflugerville, tx
sam
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