im Axle Specialists

Technical Advice on Clutch,DMF and DPF

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Technical Advice on Clutch,DMF and DPF

I can only comment on the DPF regen question. It needs to achieve about 620 deg C and last for 5 to 10 mins. You need that temperature to burn soot.

200 deg C is cold - was this just at idle? On a long hill on the motorway the pre-DPF temperature will be over 450 deg C. if you're never seeing over 200 then may be the temperature sensor is faulty resulting in the car going into limp whilst trying to perform a regen?
 
DPF temps.jpg
 
shedenvy said:
I can only comment on the DPF regen question. It needs to achieve about 620 deg C and last for 5 to 10 mins. You need that temperature to burn soot.

200 deg C is cold - was this just at idle? On a long hill on the motorway the pre-DPF temperature will be over 450 deg C. if you're never seeing over 200 then may be the temperature sensor is faulty resulting in the car going into limp whilst trying to perform a regen?
Click to expand...

Thanks for your reply and graph. - I need to rig up the diagnostics to see what the last regen temperature was when it was doing an active regen.

200c was just driving along normal 30 roads I guess. - I have changed the temperature sensor and thermostat also.

Your using multiecuscan - can this be put on andriod phone with bluetooth dongle?
 
Ok, i have a small bluetooth elm27 blue dongle but that does not work with the alfaobd demo so will buy one of these and try that.

will try and get myself to friends garage and get the codes and dpf information read.
 
Plugged in kit to read live data. Below is what it showed. Pleased it has dropped down to 22% dpf was 550c so the new temperature sensor works ok.

I'm not driving the car on long runs on a daily basis so probably why it clogged up.

Does anyone know the percentage the dpf needs to be clogged before it does an active regen?


20190416_134253.jpeg
 
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