1998 Nissan altima PROBLEMS PLEASE HELP?

Question

my altima when i idol sputters real bad like its going to die how ever it never dies on me just sputters real bad i changed the exhaust manifold and 0'2 sensor before the cat and replaced the fuel filter anyone have any suggestions why my car is doing this

the manifold was cracked almost in half a mechanic told me to replace the fuel filter and 02 sensor. check engine light comes on sometimes then goes off the code i got when i hooked a reader up to it was N/A 0101

the code i got wasnt a code anyone has ever heard of the plugs are fine the fuel injectors are fine

Answer 1

First off let me say this. STOP SPENDING MONEY YOU DONT HAVE TO.
Todays cars are more complex then ever befor. Just changing parts that dont need to are a wast of money.
Get it checked.
Here is things to look for.
Bad plugs
Low fuel pump pressure.
Is the service engine light on?
Take it to auto-zone and have them scan the cars computer.
Thy will tell you what thy found and then think of replacing parts. If it does not need replacing DONT DO IT
The old addage is if you are not shure it is bad, dont replace it just to see it that is what it might be.
The days of lets try this and lets try this is over.

Answer 2

fuel injector or fuel pump or timing

Answer 3

if all fuses r solid initiate purchase finding on the wiring on the drivers door open the door seem in between the door and the fender possibilities r the wires have been given worn or broken desire this enables