DEF and Idling - Ford Powerstroke Diesel Forum
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Old 08-13-2013, 05:54 PM
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DEF and Idling

So my fleet manager for the company I work for, said he wants to get a 2013 F550 bucket truck, its got everything on it that we need, but I am a little concerned on whether the techs will keep up on the maintenance, esp keeping the DEF tank filled. Also I'm concerned that the DEF tank will drain a lot faster given that the truck is going to be idling a lot on the side of the road. What does everyone know about with the DEF and running out while idling? Also the truck is a demo with 1000 miles on it, so I'm a little concerned that there may already be some issues.
Thanks for any help.
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Old 08-13-2013, 06:25 PM
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DEF Is not as big of an issue as people think. I believe the C&C trucks come with a 6 gallon tank (instead of the 5 in pickups).

Anyway, the truck is smarter then your techs, and it will force them to fill up the DEF if they want drive it above XX MPH.
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Old 08-13-2013, 06:32 PM
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The biggest issue with DEF is people putting it in the fuel tank! Its something like a $16K bill to replace the entire fuel system...
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Old 08-13-2013, 06:34 PM
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I could be wrong since I deleted all of that crap almost right after I bought it but I beleive it has to be driven to regen with urea. I remember seeing the "drive to clean exhaust" message once. But ya if its too low they won't be driving over 20 mph I think it is. Someone else confirm please
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Old 08-13-2013, 06:41 PM
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Thats some good info, thanks guys.
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Old 08-13-2013, 07:53 PM
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So at what point will the DEF tank trigger the speed limiter, 1/2 tank? 1/4 tank?
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Old 08-13-2013, 07:55 PM
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Quote:
Originally Posted by matty21 View Post
I could be wrong since I deleted all of that crap almost right after I bought it but I beleive it has to be driven to regen with urea. I remember seeing the "drive to clean exhaust" message once. But ya if its too low they won't be driving over 20 mph I think it is. Someone else confirm please
"drive to clean exhaust" is for the DPF regeneration, which is done with diesel. Urea works in conjuntion with the EGR to reduce NoX. Urea is only injected when the computer sees too much NoX in the exhaust.

The C&C trucks have operator commanded regens. (you will be able to regen while parked)
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Old 08-13-2013, 07:59 PM
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Quote:
Originally Posted by BigGreen06 View Post
So at what point will the DEF tank trigger the speed limiter, 1/2 tank? 1/4 tank?
I have never seen the warnings. (DEF IS NOT A BIG DEAL....) So I may be wrong here.

I belive a message pops up at 1/2 tank and warns you that it is under 1/2.

Then when it gets low (1/4 -1/8 tank ) it will start harrassing you everytime you start your truck. Then a message will stay up saying your speed will be limited in XX amount of miles to XX MPH.
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Old 08-13-2013, 08:03 PM
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Originally Posted by BIG Laing View Post
The C&C trucks have operator commanded regens. (you will be able to regen while parked)
Just to save face incase all C&C trucks do not come with OCR...

Make sure your fleet manager confirms OCR capabilities before purchase.
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Old 08-13-2013, 08:10 PM
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Good info. I wasn't sure on EXACTLY how it operated.
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