1997 maxima wiring help

[audrey76]

2 weeks ago I parked my car and it was fine. I put the car in reverse and it backed up A few feet and cut off. my mechanic Checked the car And found that a fuse had blown. He replaced the fuse 2 or 3 times and it Kept blowing. finally he got the car Started. Took it for a test drive and he told me to go get my tires balanced. (not related to the fuse issue)The car seemed fine all the way to the tire Store. They balanced my tires and when they went to back out the car wouldnt start. I told them about the fuse trick... And it worked.. until I Walked Away..When I Came back The man said The fuse blew About 5 or 6 times And then he upped the Amp on the fuse. When he tried to start the Car I noticed smoke.Turns out the wire harness melted some wires together. The guy picked the wires apart and put electrical tape on them changed the fuse again and the car started up. I went to Advance Auto because my Check engine light was on. 19 Code a lot the same turns out they were for the wires that got burned. We got new wire and spliced the harness replacing all burned wires. Had check engine reevaluated. PO105 map circuit. PO600 serial comunications link and P1605 automatic transmission diagnostic communication line. Car starts off very sluggish but once it gets going its fine until about 45 mph when the rpms raise as the car goes faster. I did some research and I believe the car is in "limp mode". We checked all fuses and found that fuse 4 was blown (a/t cont) sonwe replaced it- now the car starts and cuts off immediately- if u pull the fusethe csr starts up normally but has a rough idle. New fuse, car starts but cuts off again- wiring diagram shows fuse 4 is a green wire that goes to the throttle position sensor-- sooo we replaced the tps and reset the computer- feels like car is out of limp mode but has horrible idle and car slams in to 2nd gear- we picked up an idol speed sensor we will be replacing tomorrow but I am at a loss with this car-
It has had tons of work recently done, new rack, tierods, control arms, struts, all engine and trans mount, egr solenoid, MAF sensor, pas side caliper, axle on both sides, new tires. Please someone help me- I dont know anything about cars really and this is my firdt time on this site--first post-
Please help if you can!! Thanks!!

[sx moneypit]

Considering all the problems with you car you need to get it to a very skilled technician .