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I posted this in another thread but thought it deserves its own thread. Here is a TSB for the regen process.

TSB
07-4-11 6.4L DIESEL - REGENERATION FUNCTIONAL CHARACTERISTICS

Publication Date: February 20, 2007
FORD: 2008 F-Super Duty


ISSUE:
2008 F-Super Duty vehicles equipped with the 6.4L diesel engine are equipped with an oxidation catalytic converter (OC) and diesel particulate filter (DPF). The function and operation of these parts may cause some customers to perceive an issue with their vehicle.

ACTION:
Review the Operating Characteristics with the customer.

OPERATING CHARACTERISTICS

Diesel particulates in the exhaust are trapped by the DPF. Regeneration is the process by which exhaust temperatures are increased so the particulates are combusted.

The frequency and length of regeneration will fluctuate as both are determined by the drive cycle. For most drive conditions, regeneration frequency will vary from 100 - 600 miles (161 - 804 Km) between occurrence and last from 10 to 40 minutes. The first regeneration does not require 100 miles (161 Km) and may occur at any time. The length of regeneration is usually reduced if a constant speed above 30 MPH (48 Km/h) is maintained.

The following is a list of normal operation while the vehicle is in regeneration, and do not require repair. If you are not sure if the vehicle is in regeneration, IDS can be used to monitor the Diesel Particulate Filter (DPF) PID.

Engine idle speed can be 1100 to 1200 RPM in park/neutral with foot off brake.
High idle speed drops to within 50 RPM of normal idle when the brake pedal is touched, PRNDL is actuated, or clutch is actuated.
White smoke in cold ambients is normal and the amount will be increased during regeneration.
Powertrain power is limited to 325 horsepower (HP).
Engine responsiveness may be slightly different than normal operation.
During initiation of regeneration, exhaust smell may be noticed - especially on new vehicles.
Powertrain sound will be different including air induction noise (including flutter on deceleration or engine shut down), exhaust noise, and changes in engine radiated noise.
During regeneration, exhaust temperatures are elevated.
The following is also normal and may be observed by a technician using a diagnostic tool. It is not likely that a customer would be aware of these:

The throttle body is only active during the regeneration process and during shutdown.
EGR is not operating during regeneration.

WARRANTY STATUS:
Information Only
 

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General Contractor
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518 Posts
I do not like what is going on with this whole regen process. Could last from 10-40 min. How is that suposed to help fuel economy and the environment? The engine is derated to 325 hp. What if your engine is already at 325 hp you drop to 300 to 275? I am not buying all the hoopla around this new motor. Actually it isn't Ford, or international or the 6.4.'s fault. I want this to be the best truck ever built but I think the EPA is giong to kill this clean :smoke diesel before it even gets a chance. Sorry for the hijack I needed to vent my frustrations.:pointlaugh :sofa
 

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'Ol Builder guy
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7,051 Posts
Exactly the way I feel. I decided to buy an '07 "dirty diesel" and you'll find the DD's are in high demand........what's left of them. I won't buy new again until all 3 have refined the regen process to something that's easier to live with.
 

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AKA - FFpsd
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So does this meen that you can't install an aftermarket exhaust? Or are there ways around the regen system?
 

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'Ol Builder guy
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FireRescuePSD said:
So does this meen that you can't install an aftermarket exhaust? Or are there ways around the regen system?
You can install one, but it must be downstream from the regen. The only problem is those little tabs would still have to be at the tailpipe to reduce temps. I imagine someone's busy making a modified downpipe that is upstream from regen, too.
 

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Senior Member
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3,754 Posts
I agree w/duke, i dont know if well ever see a dpf delete after market (i doubt it) and hte tip will have to stay on there for cooling effects. I still wonder what will happen, some people only drive thier turcks 5 miles to work in the winter and shut it off, and dont pull or tow anythign but 5vers, rv's and boats int he summer (ie read only go out on the highway, use their trucks 40 minutes at a time in the summer). What are those guys gonna do or experience ?????? Will they have to drive out of the city (chicago) and find a highway to runt hier truck on every 1-600 miles???????????
 

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Exactly the way I feel. I decided to buy an '07 "dirty diesel" and you'll find the DD's are in high demand........what's left of them. I won't buy new again until all 3 have refined the regen process to something that's easier to live with.
Unfortunately, these are going to be 2-3 year motors. In 2010 the emissions get even stricter and everyone will be trying to meet the new standards.

Cummins says the ISB in light duty already meets the standard. GM will come out with an all new engine. Ford?
 

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'Ol Builder guy
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7,051 Posts
sacgmc said:
Unfortunately, these are going to be 2-3 year motors. In 2010 the emissions get even stricter and everyone will be trying to meet the new standards.

Cummins says the ISB in light duty already meets the standard. GM will come out with an all new engine. Ford?
Yep, it'll be urea injection unless a better mousetrap comes along.
 
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