my poor rabbit gets the shakes once in a while. I'll be driving along nice and smooth the all of a sudden it starts to jerk. does it up to about 4k, then smooths out for the most part. I took it to a VW shop and they charged me 300 to replace the control pressure regulator, but it started doing it again the next day. I don't realy matter how I'm driving. When I pop the hood I can hear the Lamba valve turning on and off then when I disconnect the O2 sensor everthing smooths out. Any ideas or solutions would be greatly appriciated, thanks.