AMP DRAW - Ford Powerstroke Diesel Forum
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Old 03-10-2011, 08:10 AM
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Does anyone know what kind of draw these trucks have key off? I'm trying to troubleshoot some battery issues. ALT is charging no problems, just looking for a common figure for Amperage coming out of the batteries with the truck off. Did some searching, found less than half an amp on a 6.0, but no joy on a 7.3.

Thanks in advance guys.
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Old 03-10-2011, 09:18 AM
Compression Ignition Addict

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As I remember, what I did was to disconnect only One of the Pos terminals. I then reconnected the post and cable through the Multi-Meter, in a milliamps setting, BUT the meter had a 300mA max (it MAXED it).

What I found was that I had to leave everything alone for a 1/2hr or more for it to settle down to a constant level (IIRC- under 100mA). It took that long, for things to shut-down, after turning the key, opening a door, or reconnecting the battery.

So, it's hard to actually know what the "static" draw is unless you're patient

I'd say, don't be surprised if it's initially 500mA but, given time, you should see it to something lower than 100mA (at least from the way I did it, and on My truck.....)
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