99 pathfinder changed fuel pump and filter and battery and sputters when giving gas bleed the fuel lines also and now check engine light is on and still sputters. what could it be?

Usually a sputter will occur under load conditions like going up hill from a lack of fuel. Start by changing the fuel filter.

There is no need to bleed the fuel system. Do you want to drain the old gas? You can just disconnect the fuel line at the engine or if front of the tank and jump the pump relay socket to power up the pump.

it could be the fuel pump our the filter if you have replaced them then you need to bleed the fuel line

check for vacume lines and also the idle air control valve.

JUST DRAIN OUT GASOLINE IN FUEL TANK.CHANGE FUEL FILTER AND.FILL UP TANK WITH DIESEL FUEL. ENGINE WILL RUN ROUGH UNTIL ALL GASOLINE LEAVES THE FUEL LINES.

try reving it after you start, if it still chokes or sputters your right. if not check your battery guage. i'd try changing your filter first because its the cheapest option. you might want to consider flushing lines too. worse case you'll need a fuel pump sending unit.

Based on what you have stated the vehicle idles fine and when you are giving it some gas it starts to "sputter and chug". This would leave me to believe that you are not getting enough gas to the engine when it is under a load and that can be a few things, so lets start with the simplest and that would be the fuel filter, which is located under the hood on the left hand side of the engine. It is fairly large and very easy to change and it doesn't cost a lot, around 10 bucks. ( I know this as I own the same year and make of vehicle and have replaced my fuel filter due to the same thing) If for some reason that does not work, I would then buy a can of Seafoam for engines/fuel (it can be ran in either) and that will cure any clogged injectors that you may have. The last thing that I would do is test the fuel pump to see if it is supplying enough fuel to the engine. I have 232,000 on my 95 Pathfinder and the fuel pump is working just fine and is the least likely of these that will go out. My money is on the filter. Best of luck to you and let me know how it works out.

the computer will reset it self remove negative battery cable for 15 min.make sure you take the code out of the radio before removing cable or the radio won't work afterwards.unless you have the code.

You may have frozen fuel lines. Sounds like not enough fuel is getting to the engine. You may need to bleed the system and change fuel pump, fuel filter and check the injectors