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Good evening fellow Astra owners.I`m seeking some help if anyone had the similiar problem with mine.I have an Astra J 1.7 CDTI 2014 with 131 BHP,72k miles on clock.
Everytime when I start driving,after a few minutes if stopping at the red light I can notice that my idle RPM is 1k instead of 800 and stalling.After start moving behind me it`s a huge smoke,so big that I can`t even see the car behind me.Also the consumption is increasing very badly,instead of ~80mpg in 4th gear dropping to ~25 and when idle from 0.2L/hour to 0.5L/hour.
Everything returns to normal,RPM and consumption when the engine is reaching 80-90 degrees.I have been to a mechanic,checked the car on diag and no errors showed up.He told me also that could be the DPF going in cleanmode but it`s normal to do this everyday?
Any help will be much appreciated and many thanks in advance.
 

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Usually your revs increase on tick over and consumption increases if you car was having a Regen. Take your car out for a 30 min long run, just in case it's stuck within a continuous regen, caused by short journies. Also keep an eye on your dipstick oil level from cold. Make sure it doesn't rise too far. That's it it is a dpf issue.
It shouldn't be stalling during a regen, you'd only normally have a puff of smoke after one has completed, so maybe you have something else going on.
A decent diagnostic check would help. A good independent, does not need to be a vaux garage. A diesel specialist is better in my experience.
My car does a regen around once every two weeks or so.
 
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