99.5 jetta (p0748,P0763,p0768)

i have a 99.5 jetta that i just bought .when i bougth it ,only had 1 code which was for the o2 sensor which i replace and also put new gasket on the header and catliyxic.also replace battery (which i had on my explorer)but when i thought i was done fixing the car took it 4 a test drive and it didnt want to shift in 2-3 and this codes came out ( p0748,P0763,p0768 ) oohh when i bought it i test drove it on the highway and it shift good

You need to adapt the throttle body with a scan tool or vag-com.