I have a 91 pathfinder that I recently bought that seems to be having a transmission issue. It shift gears ok, but it seems to shift late. It usually goes into second at 3000 to 3500 rpm and into 3rd at 3500 to 4000rpm. My brother rebuilt the tranny, but it seems to be behaving similar to what it was before. Any ideas on what the issue could be?

 

hmm..perhaps a computer issue?