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Hello alfisti , I have this big problem with my alfa 159,2.4,JTDM , the prob is that whenever I floor the pedal on third gear and above at about 3 rpm the car looses all power and I can clearly see the turbo boost gauge drop flat as if the turbo is disconnected BUT THE MOMENT I RESTAR THE CAR , power is back until I floor it again .
I have already changed my turbo and cleaned the valves , DPF ,EGR and changed fuel pump and injectors but still no solutions .
 

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Sounds like overboost to me and ECU cutting power.
Check vac pipes, amount of vac pump is producing,n75 on slam panel is working correctly etc

have you plugged in to diagnostics?
 

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Hey Johnny thanks for ur reply , I will check all the stuff u stated above , here is a picture of diagnostics that was made like 6 month ago but after that garage check the prob was solved not knowing how I was just happy it was solved and then it came back these days with the power loos
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B995DBAF-71D0-49FC-9DC2-843720897785.png
 
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