Printable View (48 KB)
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


--------------------------------------------------------------------------------

NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.

Copyright © 2007 Ford Motor Company

 

That Pretty Much Hit The Nail On The Head.

For Any 6.4 Owners, It's Noticeable - If You Have An EGT Gauge, It Will Make Your EGT's Higher & For Me, Caused Panic.

If Majority Of You Miles Are Around Town Slow Speeds, You Will Notice The Regen Process.

The First Time I Noticed This - It Caught Me Off Guard.. As I Was Leaving The Dragstrip

 

Hi there,yes i got the wrench graphic and engine graphic on my display,got reduced power then went to exhaust clean,wrench display disappeared after a while but engine graphic stayed on.Took to a friend with code reader,it said particulate filter plugged,he cleared the error code for now.A little worried now for big trips up the highway,does this filter need replacement or cleaning out,will eventually take to ford dealer to check out?

 

I drive my 6.4 F-250 Like I stole it, so my truck hardly ever REGEN

 

MABE I'M TOO LIGHT ON THE PEDAL,I TEND TO WATCH THE FUEL GAUGE TOO MUCH?i WILL START DRIVING LIKE MAYBE THINKING ABOUT STEALING?

 

On the stock 6.4 engines you are going to get around 12.5 to 13.5 MPG in the city weather you drive her lightly or hard !!! WHY, cause if driven light you'll regen more often & it burns diesel without you getting A N Y enjoyment SO DRIVE IT LIKE YOU STOLE IT

 

ya I see your point,regen causes to burn more fuel,a bit of a catch 22,drive light regen more burn more fuel,drive hard,regen less,enjoy the POWER! Thanks for that tip. I wonder if my exhaust filter in plugged,will it clean out eventually if I drive harder?