09-11-2014, 02:40 AM
Generally with the dpf temp sensor it can go up to 650 during a regen, sits around 250-300 if theres a problem with it. Also no pressure difference with the ign on is right, I have a faulty pressure sensor in a focus before that was showing a difference when it shouldn't have been, but then a sensor can go faulty in different ways.
The pressure difference seems a little high, should usually be around 9/10kpa @ 3k, have you checked the 2 wee pipes going to the pressure sensor yet?, I check them for any holes/tears, and also blow down them with an airline to make sure there not gettings blocked, there can gather black 'gunk' in them also tap the holes leading into the sensor lightly of your hand to shake out any dirt in it while your at it. Say if there was a problem with the pipe after the dpf, the sensor wouldn't be getting the correct reading. Definitely check those 2 pipes.
The pressure difference seems a little high, should usually be around 9/10kpa @ 3k, have you checked the 2 wee pipes going to the pressure sensor yet?, I check them for any holes/tears, and also blow down them with an airline to make sure there not gettings blocked, there can gather black 'gunk' in them also tap the holes leading into the sensor lightly of your hand to shake out any dirt in it while your at it. Say if there was a problem with the pipe after the dpf, the sensor wouldn't be getting the correct reading. Definitely check those 2 pipes.