1st real cold Morning, started van, heard.

1st real cold morning, started van, heard whining sound(I thought maybe pwrsteering or altn)it would get louder with acceleration, did this for 3 days, 4th day(cold morning) started van, heard some kind of ticking sound from front right wheel well. Few miles down road, abs and tcs light came on and it felt like I lost acceleration power, barely made it up hill to my house. Parked, hours later restarted(when it was warmer), no abs or tcs light. Still had whining sound but now had burning smell coming from next to battery/fuse box(I think from a hole in frame leading down to front right wheel well area). Changed front pads that day(old ones were trashed). Checked shoes, replaced rear right wheel cylinder(old was leaking). Bleeded brakes. Started van, could still smell burning, and hear sound{not as loud)no abs, tcs lights though, but engine light came on (showed P0341 Cam Sensor). Drove several miles, sill no lights, started to brake for red light, then, abs, tcs, & brake light came on, seconds later, all dash lights came on and start blinking, lost acceleration power and van starts sputerring on and off for about a1/4 mile, then it died. Tried to restart, battery was dead, someone boosted me, drove maybe a mile, it died again, battery dead, (battery is less than 2 weeks old)Had to it tow home. Looked at ABS wire on rt frnt hub, no burn. What do you think it could be? What can I check?