Ford F450 super duty regeneration cycle

Asked by Jan 10, 2016 at 05:13 PM about the 2008 Ford F-450 Super Duty

Question type: Maintenance & Repair

I work for a company that has around 200 f-450 2008-2010 super duty trucks.
I'd say approximately 60% of these trucks have fumes that leak into the cab
when the regen is on. The trucks rarely leave the city or are on highways so they
are constantly running in regen mode. Usually 80-100% of the shift its in
passive or active regn. Our shifts are generally 10-13hrs of driving. After a few
hours of breathing in the fumes I notice my eyes start to sting, throat gets sore,
headache begins and I get very tired. When I bring this up to our management
and mechanics everyone assures me the regen is completely safe, I can't help
but notice none of these symptoms occur in the trucks that don't have regen
fumes that leak in the cab. Are my symptoms completely a coincidence? How
often do these filters need to be changed or cleaned out? (Majority have
300+km on them) Are regen fumes toxic? Is there a way to stop a regen cycle?

1 Answer


I don't know about toxicity but the extended idle time of the trucks will wreak havoc on the exhaust system. >>>>>Over time a slight amount of ash will build up in the DPF which is not removed during the regeneration process. The DPF will need to be removed for ash cleaning at approximately 193,000 km (120,000 mi) or greater (actual mileage can vary greatly depending upon engine/vehicle operating conditions) and replaced with a new or remanufactured (ash cleaned) part. A new DPF will need to be installed at approximately 400,000 km (250,000 mi) or greater depending on engine/vehicle operating conditions. In both cases the PCM will set a check engine light to inform the customer to bring the vehicle to the dealer for service. If there are any issues with the OC /DPF system, a check engine light will be set by the PCM.

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