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Fiat Ducato 2012 3.3MJ Irregular Idle Speed

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Hello.
I have big problem with fiat Ducato 2012 year 2.3MJ 130HP. The case is that engine has irregular idle speed.
When driving everything are ok. NO any DTC stored. Also i changed throttle EGR and MAF.
When idle speed is erratic and i unplug one of those tree: EGR, MAF, Throttle then Idle is stabilized but i have check engine illuminated and when plug in again then rough idle speed.
Anybody had same problem? EGR is full electronic type.

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