DPF filter on Serrano

[Gisela]

Our DPF filter on our Serrano does not want to automatically regen. We have to do a park regen every few miles when traveling in the High Country. We live in Colorado, so it happens a lot. We have about 50,000 miles on the MH. Any Serrano owners with the same problem?

[javelin]

I own a gasser so no DPF issues.....but the attached hyperlink may provide some good info about the DPF process for you and others with diesel engines....and for gas engine owners who want to learn what this is. Sounds like you may need your filter to be replaced or cleaned professionally but that is just a guess.


Compound Performance; Deviant Race Parts’ Compound-Turbocharger Kit Install

[javelin]

Sorry first link somehow came out wrong so hopefully this one works for the DPF article:


DPF: The Time Bomb Under Your Diesel - Diesel Power Magazine

[simidrm]

The dpf system consist of a doc-dpf-catalyst.
doc catches the soot from the engine and a regen burns that soot to ash and is caught and stored in the dpf,the catalyst just takes care of nox.

at the outlet of the doc is a tube with rubber on it and nother tube goes to the outlet of the dpf, the sensor the tubes hook to is called a differential pressure sensor and when pressure between the 2 cans reaches a threshold it trigger a parked regen,now 2 things could be wrong either the differential sensor is bad or the dpf is plugged with ash, I have also found that the clamp that holds the pressure sensor gets loose and let the sensor slide down the dpf and when that happens water that forms from condensation cannot drain off and plugs the port giving a false reading,the tubes should be angles up to the sensors at about 10deg you should be able to look at that and rule it out for free,any question I would love to help .