1999 x308 3.2
So far, plugs,packs, cps, lambda sensors,chains
******* thing runs sweet from cold then once warm the rough idle starts and restricted mode, leave over night and runs sweet from cold until warmed up. Please please help, wife hates me keep spending ( didn’t help when replied “ you have sanitary towels “) driving me crazy all I get after a while is snap-on code P0357 coil pack G

 

Other than what you have replaced, the faults could be:

1. Fuel Pressure Regulator faulty or vacuum hose to it broken/leaking
2. Pack G is actually B3 (Left Bank); there could be a fault in the Ignition Module for the left bank, when it heats-up. The two ignition modules (left and right) are located next to the brake vacuum booster.

 

I had the same issues. Car ran fine for 10-15 minutes then ran rough, occasionally lurching on acceleration. New knock sensors cured the problem instantly and now runs like I dream, I'm so surprised that they made such a massive improvement.