A number of things could be At Fault, the car needs a systematic problem analysis. I would look at the fuel system to begin with, then the cylinder head should be looked at. How are the valves? Timing could also be wrong. In my opinion the most likely problem source in this case is the fuel system.
your neon sputters from old spark plugs and plug wires. i changed both and problem went away.
the fuel filter has been changed.
check the vacuum hose which goes to the MAP sensor, $4 part.
That would be a judgment call on what the old belt looked like.
Only as needed. The serpentine belts hold up well unless there is a problem with the belt tensioner or any of the driven accessories.
You firts pull out the battery, and then you slip out the starter cables, and right where the belts are you snap those and that's where the serpentine belt should be changed.
Did you get the alternator tested?
I just had my serpentine belt changed the other day. I went to my local Firestone and they replaced it within the hour for around $75 including labor.
The point at which you should have your serpentine belt changed depends on the vehicle. It is best to check the owner's manual. That said, under the best of conditions, the belt should last from 60,000 to 100,000 miles, depending on the vehicle. This doesn't mean the belt won't need to be adjusted at some point before it needs to be changed.
80,000 ---100,000
Most serpentine belts can be changed on the side of the road. It is usually an extremely simple procedure.
check to be sure the routing of belt is correct