When I first got my 240sx everything ran perfect. The only problem was it was manual and I had never driven manual before. I was teaching myself how to drive as I went down 101N and I accidentally down shifted from 5th gear to 2nd. That caused my transmission to get really tough to switch gears fast.
The next problem was my "check engine" light stays on for no reason. I had a mechanic check it for me and he said he could not find anything wrong with the engine.
After that, my rear passenger tire was defective. Out of no where it was missing a entire stud and another stud was broken half way. Very dangerous.
My A/C compressor broke and still cannot find the right part for it.
Just last night my driver seat completely broke off the left hinge while reaching into my pocket.
After fixing the studs previously, another stud completely broke off again. What Luck?
Pop-up sun roof leaks time to time.
The car was fairly cheap and runs great. Good acceleration from the line.
I don't like how it tops off at 115mph when I know it could go faster because it wasn't even close to the red line.
Looks really sporty and handles better than any other car I have driven before, even a 2003 GT Mustang.
I don't like how small the interior is, I'm 5'11 and I need a couple more inches.
I think this car needs a lot of work to be considered "High Performance", particularly when it comes to the power of the engine. The design of the suspension is superior, however the actual suspension components all need replacement before I would consider it High Performance... all the same, for what it is and for the price it costs this is a fabulous little car.
Keep the car it can go five times faster than other 240sx. I have the same car and problems you do, but I'm still keeping it. I think the hp can go to 1000 some hp.