Ficum Test long start warm - Ford Powerstroke Diesel Forum
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Old 06-13-2013, 04:45 AM Rookie

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Ficum Test long start warm


I have a 2004 SD and 221000k.

I put a new cover and pump and new STC. It it is studded and has a EGR delete.

I have warm starting

I tested the ficum:

Key ON 48.1v
Running 44.5v to 45v

Could this cause warm starting issues?

Thanks in advance.
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Old 06-13-2013, 05:20 AM
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Is your truck a late 04 with the ICP sensor on the valve cover? If so i would try stand pipes and dummy plugs. While your doing those look at the o-rings on top of the injectors to make sure they are not cracked.
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Old 06-13-2013, 05:22 AM
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Your FICM voltage is starting to drop, but its not quite in the scary zone yet. I'd just start putting some extra coin away though so you can fix it before it gets any lower. Or if you have the coin now, get that one fixed or replaced..sooner the better.

04 MY doesn't have a STC fitting, that's in the 05+ trucks. Might be confusing that with another part. But warm starting issues are usually caused by high pressure oil leaks. Could be dummy plugs, stand pipes, IPR valve might be sticking, or your ICP might be going south on you. To pinpoint, you'd need to get livedata on your ICP and IPR actual vs desired readings. If they test out you'll need to do an air test on your high pressure oil system while commanding the IPR closed and listen for leaks. When you hear it, you pinpointed your problem.
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