DPT Deleted? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 12 (permalink) Old 12-28-2007, 01:07 PM Thread Starter
 
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DPT Deleted?

Hi everyone,
I'm new here and do not know much about diesel. I've been leaning a lot from everyone.
I'm driving a 2008 Ford F-250. The computer shows me that I average 20 MPG going between 55-65 MPH and 18-19 MPG at 65-75 MPH. After a tank and I figured it on paper it comes out to 14-15 MPG with out pull any thing. I think it has a lot to do with the regen system due to it burning extra fuel to clean the filter. My truck will regen 3-4 times per tank. I've seen where people have deleted the DPT so there truck will not regen. The regen is to clean the spicel filter in the exhaust system? If so, by not regening want the filter clog up and cause problems?
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post #2 of 12 (permalink) Old 12-28-2007, 01:47 PM
 
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[QUOTE=Toolpusher]Hi everyone,
I'm new here and do not know much about diesel. I've been leaning a lot from everyone.

I too lean from some of the people here, others aren't that bad.:

I think you mean DPF (diesel particulate filter)?
Those who have shut the regen process off with programming are also physcally removing the DPF to keep it from clogging.
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post #3 of 12 (permalink) Old 12-28-2007, 07:38 PM
 
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yeah, if you turn the regen off then you need to remove the dpf, otherwise the soot that gets caught won;t ever get burned off, and you have a much bigger obstruction than you ever had before, hey, STRAIGHT PIPE IT!!!
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post #4 of 12 (permalink) Old 12-28-2007, 08:39 PM
 
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your truck should not regen 3-4 times per tank unless you are doing city driving constantly laying into the throttle, even then 3-4 times is a stretch.

When i do city driving at college i get on the throttle often and the most ive seen is 2 regens in one tank but i was doing a lot of throttle mashing that tank.
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post #5 of 12 (permalink) Old 12-29-2007, 12:11 AM Thread Starter
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I do a lot of short trip back and front to town with out laying into the throttle and that probably why my truck regens so often. Thanks for the info.
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post #6 of 12 (permalink) Old 12-29-2007, 12:34 AM
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I was given some data from my ford dealer and they said that the more highway driving the more chance for regen, because that is when the system will go into that mode more often. Something to do with the more consistant speed. Yes, you will create more soot in the system with more city driving, but the system will try to regen more on the highway then in and around town. Hey, thats what I was told so I just thought I would add that in. :2cents

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post #7 of 12 (permalink) Old 12-29-2007, 12:44 AM
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I drive 130 miles a day in new orleans traffic with good bite of idling and maybe get the first sign of needing a regen in a 1.5 weeks.

Question, when your truck starts to regen do you let it finsh which take approx 30minutes or do you hit the brake and keep driving?? If you do the later that why your truck is acting that way. If I were you I would either get on the highway and drive for an hr at 70mpg you'll probably clean it out or when it starts to regen open the hood to allow the heat out and let it do its thing for 30minutes.

I always notice after I fill up for diesel and its around the time for a regen I usually get it if the truck is hot already.
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post #8 of 12 (permalink) Old 12-29-2007, 01:40 PM Thread Starter
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I did not know hitting the brakes would stop the regen, so no I do not. If it is regenning when I stop at home, I just turn it off. Diesel prices are to high just to let it burn fuel in park to finish regen. I only run on the highway twice a month going to work.
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post #9 of 12 (permalink) Old 12-29-2007, 08:26 PM
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If you shut the truck off during a regen it will continue the cycle again when the truck reaches operating temp. Let it completly finish, that's probably why you're going into regen so much.

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post #10 of 12 (permalink) Old 12-29-2007, 09:38 PM
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Quote:
Originally Posted by Toolpusher
I did not know hitting the brakes would stop the regen, so no I do not. If it is regenning when I stop at home, I just turn it off. Diesel prices are to high just to let it burn fuel in park to finish regen. I only run on the highway twice a month going to work.
onlytapping the brake in park will shut it off. not in drive
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