Discovery not accelerating when starting.

Also video about the oil drain modification kit

gstuart said:

Plus 1 what’s already been mentioned

Indeed as the error is at low revs would check the primary turbo actuator, also ensuring the wiring to it is ok , the secondary only kicks in over 2700 RPM.

If u don’t mind me adding Plse be very careful if ur not sure on some resets etc as u can brick the car

Might be an idea to have someone drive the discovery while u watch the live data , turbos etc , taking screenshots of the data , at least then ur more info to go on

Hope that also helps

Ps, there’s also a turbo oil drain modification kit and if the actuator is stuck and keeps doing it they have an updated one that u can buy

Click to expand...

I will do this next week!

I add some new information, I try to make several test on this issue, now I can say that in 99% of case, when car is turned on after a long park, starting with the first gear is a nightmare, engine stai at 1000-1200 rmp and increase RPM at very slow rate, even if I completely kick down the throttle, engine continue to stay at this RPM and slowly speed increase, like when you release the brake pedal and car start slowly moving, seem that there is a small increase of performance if I gently push the throttle at 10-20%, but after a while, when RPM reach 1600-1800 RPM then suddenly power arrive and car accelerate normally.
There is no "lower power", but no RPM!
At lower RPM turbo seem working normally, so I don't expect that wastegate valve is not compleatly closed, or variable geometri is not working, but this an impression.

It's possible to monitor some parameter in ECU to have a comparation with a regular working engine? Any suggestion?

Ah, after a while (I can tell when engine is warm but now in my town we have 34 °C...) then starting is not perfect but not so slow as is when is cold.
So, what is missing, seem for me, is some condition that allow engine to increase RPM for starting and remaining at low RPM during this phase.
Remind that I have changed the gearbox oil... before was normally! Can be related?