Q: Battery and brake light came on on my Mitsubishi montero sport. Just replaces battery terminals because car kept dying.

I have multiple issues. First, every time I would get lucky enough to get my car started, it wouldn’t start the next time I needed to start leaving me stranded places like stores. We replaced my batter terminals and that seemed to have solved the problem. But now, other things are happening. The brake and battery light keep coming on and when i turn on my defrost, there’s a crazy sound near my engine sounding as if someone was revving the engine. My service engine light goes on and off constantly. Secondly, i just got my tires rotated and a new front tire put on. I’ve always been very paranoid that my tire felt wobbly but ever since the rotation, my car jerks randomly left and right. It doesn’t pull as if it needs an alignment (which it does) but it jerks and wobbles. I think the tire may be slightly too big. Note that I’ve also recently had an alternator and water pump replacement. Thank you so much for reading

My car has 260000 miles.
My car has an automatic transmission.