88 MR2 Problems

Whats up yall, i have a 88 MR2 that im tring 2 sell but it has an electrical problem.. first it just died on me, n it was just the #15 fuse in the fuse box in the back, so i took and disconnected my stereo n amp, n it started up but now it putters n back fires a lil over 3800-4000 RPM, n wont go any higher. but i was driving it and then it died again, n then it was the fuse above the other one that blew, it was the #10,
you guys think you could help? any would appreciated!