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      01-17-2012, 03:55 PM   #11
Pwalo
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Drives: 118d m sport Le Mans blue 2009
Join Date: Jun 2010
Location: Guisborough

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The problematic Leon Diesels are running the archaic PD engine - BM's are commonrail and capable of initiating a regen from a hydrocarbon injection into the Oxidation Catalyst . This will occur when the when the Delta pressure sensors sense an increase in back pressure - an OBD plug-in reader can tell you when the temperature has risen in the DPF from the thermistors in the system if you set it up to read them and then you can work out when a regen is taking place. You should se a rise in the DOC/DPF to about 600 ish degrees from a normal temp of around high 200's to 300's.
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