Help wont pass 3.5 rpm

[Jorge Ladino]

hi i recently purchased a b6 3.0 automatic the car has no strength i replaced all the ignition coils, but im still getting this codes on the scan 16684,16955,17536,17658, i also recently replaced the fuel pump.
thanks in adnvanced

[pauldazzle]

Ross-Tech Wiki (http://wiki.ross-tech.com/wiki/index.php/Main_Page)

[angiektolliver]

Post what each code is if u want help