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Engine trepidation at stop


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15 replies to this topic

#11 simistef

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Posted 03 September 2015 - 07:49 AM

@allmondeos - exactly. this is how it also feels like.

How many times did that happened to you ? only once ?

 

The DPF regeneration sounds plausible. As we speak, the car is in service, so really curios what they will say.


Edited by simistef, 03 September 2015 - 07:49 AM.


#12 allthemondeos

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Posted 03 September 2015 - 08:33 AM

Only once that I can remember, I have a video of mine too which is basically the exact same as yours. I'm interested to know if your service department find anything.

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#13 chriscatt

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Posted 03 September 2015 - 04:37 PM

Yes the ecu takes its readings from the sensor in the dmf, however it will be the ecu which decides if the conditions are correct to perform a regen. This is the reason why sometimes regens fail or that regens are happening more often because of the driving conditions. Surely a sensor on its own cannot make decisions and only tell the ecu the condition of the filter?

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#14 b0gdan01

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Posted 15 September 2017 - 08:17 PM

Hi there!

 

Was the mystery with the trepidation solved? I experienced this too about 2 times on my 2.0 TDCI bi-turbo engine.

 

Cheers,

Bogdan



#15 Mon85

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Posted 20 September 2017 - 11:55 AM

If DPF regeneration is ongoing you can see it from the instant fuel consumtion figure. In normal idle I have 0,4-0,5l/hour and if regeneration is ongoing fuel consumtion is almost double in idle. This way you can see if regeneration is ongoing when engine revs are not stable.



#16 b0gdan01

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Posted 20 September 2017 - 08:07 PM

Correct, I noticed the same. I am always checking the fuel consumption before stopping the engine, to make sure I don't interrupt the DPF regeneration.

Still, the trepidation did not happen during DPF regeneration as the fuel consumption was around 0,5l/h.






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