been having some trouble with my b15 recently did the throttle body/ starter/ battery/ crank and camshaft sensor/ maf/ but while driving when i go into neutral or in low gears it stalls on me while on the road. doesn't stall in 4th gear and above or going over 45 mph. when i scan it with an obd2 reader i get a code for 02 sensor and coolant temp sensor. no other codes. after changing throttle body it did work fine for a couple weeks then stalling started again, got code for camshaft sensor so i changed both crank and camshaft sensor at the same time after that no start. did i do something wrong?