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Discussion Starter #1
So update on truck. It's a 2004 build date 11/03.
Had no start problem after installing new ficm but found a bad wire in the harness and blown fuse. Fixed all that and now put in the old ficm just to check it all out.
Truck started fine let it run for 5 minutes then took it around the block. And it sounded like it wanted to die parted at home and it did die. But started right back up. Before all these problems I was thinking I had a battery/alternator problem.
Truck has ficm sync, ficm output power goes from 45.6 down to 31. ICP 700 when idiling, IRP 23.4

What else should I check out? I have a scangauge 2
 

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Jackleg Mechanic
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881 Posts
There's a problem with those FICM #'s. That voltage should never drop below 45.
 
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