Tech needed - Charging system questions - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 02-04-2008, 09:24 AM Thread Starter
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Tech needed - Charging system questions

After some searching, I can't find an answer.
Nothing is WRONG with the charging system, I just need some answers for some mods I have planned. To the question...

My 7.3L single alternator is putting out around 190-205amps @ 2000 RPM's under load (I had it tested when I installed 2 new batteries). How many amps does the engine (IDM, PCM, fuel pump and what not) need to have to run properly? I'm trying to find out how much overhead I have to safely play with.

Thanks!

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post #2 of 4 Old 02-04-2008, 12:32 PM Thread Starter
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Afternoon bump.

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post #3 of 4 Old 02-04-2008, 01:01 PM
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well considering the pcm runs off of a 20 amp fuse and the idm i think is a 40 amp circuit , thats only 60 amp max voltage which tells me its running off of less than that if that makes since


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post #4 of 4 Old 02-04-2008, 01:05 PM Thread Starter
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Thanks. My truck is in the shop getting some suspension work done and I couldn't remember off hand. I was assuming that it needed a minimum of 70amps and was going to allow 75-80amps to be on the safe side.

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