Technical Irregular idle(minimo) on cold

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Technical Irregular idle(minimo) on cold

Reflection

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Jan 15, 2021
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Hi

I have a Fiat Grande Punto 1.3 Multijet Diesel 2008.
I have iregular idle on cold(when the car was left one day without moving).
The engine rounds go between 800-900 and if i press accelerator pedal one time than it gets 800 round static.

I have changed the diesel pressure valve, i have a new kit phase and i changed the diesel filter.I controlled the injector and all are fine.No error code present.EGR valve change with a new one.

What can cause this thing?
 
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