Ok so I'm brand new to this site and brand new to volkswagon. I just purchased a 99 vr6 jetta yesterday with 100k miles on the engine and tyranny. I believe I'm experiencing limp mode. Its an automatic transmission by the way. Its throwing a speed sensor code and a gear code of some sort. The linkage is off because its in drive on the dash and in 3rd on the shifter. I was experiencing what seemed to be just stuck in 3rd gear and then sometimes it shifts fine and hem it shifts at 4 grand and letting off the accelerator but wont shift into overdrive. This is what I'm currently experiencing and any input is greatly appreciated.