Hi, does this AGR have to change the valve, where exactly is this one? Left behind the engine or right behind the engine? Have/had a jerking when starting up (EGS6), changed the battery (but was from 2016 original Citroen) and Luffilter, make me think that the Egs already switched better, but when starting up or 1 and 2 gears the power is somehow delayed, after that it goes without problems. These 2 things are exchanged for the reason because in the tester: Battery weak and AG When replacing the battery, I noticed at the top of the fuses that there is a 5A fuse missing!