[UrDadySuperman]

I barely bought this 93 Jeep Cherokee Sport with 123,000 miles and am wondering if anyone can help why at 45mph it starts to shake and at 50 it stops? Have anyone else had this problem and how can I fix it and what to do? Thanks for your help I appreciate it.

[Kuasimodem]

That's not engine related, it sounds more like front end alignment, tire ballance, or worn front end parts. Since it only happens between 45 and 50 I would suspect tire ballance first.

Try rotating the tires front to back and having them reballanced.