Hello I have a 2000 Frontier 2 wheel drive and I'm not sure what's going on with it, @about 2000rpm the engine wants to jump and spit and sputter I have replaced the fuel filter, plugs, wires, and the distributor cap some insight would sure help. Thank you in advance

no VIN posted or country and means ,impossible to know this.:
he Nissan Frontier is a nameplate used on two different pickup truck models by Nissan:

• Nissan Frontier (international), an alternative nameplate for the NP300/Navara on some markets ,SOLD UNDER 15 NAMES WORLD WIDE;
• Nissan Frontier (North America), a rebadged NP300/Navara from 1997 to 2021, then became a separate model since 2021
• Sold as D22??????canada or USA?

VG30 V6???
VG33 V6???
the Nissan here has a cam timing belt, if allowed to slip at 60 to 100kmiles the engine is wrecked, valves in the cyl. head bend!

so do you ignore this belt>? if yes it will get worse. $$$$$$$$$$$$
do not disconnect the map, and leave it like this, ever.
forget evap code until engine is fully serviced.
all Nissan's are interference engine,<< belt never IGNORE
1: check the cam belts for fray,cracked or skipped time.
2: new spark plugs (before o2, fuel cannot burn with bad spark.)
3: check fuel pressure to spec, FPR can be bad. and low pressure.
4: pulling map can kinda hid a bad FPR, if pressure is low.
5: new distributor timed wrong. as most noobs do,
6: clogged 1/2way injectors.

https://www.clubfrontier.org/forums/.../frontier-running-terrible-after-warm-up-1611...

Oct 10, 2014 - 10 posts - ‎5 authors
Hi Guys, Ive got a 2000 Frontier SE with the 3.3 in it. I was sitting at a stop ... Engine started sputtering/misfiring really bad. I was able to nurse it ... Misfire between 2-3k rpm only when hot
10 posts
Aug 19, 2011
Sputtering, stalling 3.3
10 posts
Oct 27, 2009
More results from www.clubfrontier.org

When you say "sputters at 2000 rpm" , are you referring to ANY time the engine is at 2000 rpm - meaning in Park, when you are just goosing the throttle, or in gear when you are accelerating, or at highway speed in high gear? If you are experiencing a "shuddering" in the engine at certain speeds/rpms - especially if these are speeds you regularly cruise at (long commutes at steady speeds), the problem could be in the Throttle Position Sensor (TPS). They have a tendency to wear unevenly if you drive a certain steady speeds. Eventually, the problem would progress to an engine code, but it may occur without setting the check engine light.

check you have good earthing points, also check the earthing strap from engine to shell. main earthing point follow the negative lead it will go to the shell.

most likely need a tune up.or lose wire

CLOGGED FUEL FILTER OR CLOGGED FUEL INJECTORS.WILL CAUSE SPUTTERING AND MISFIRE.LEAKING EGR VALVE WILL CAUSE ROUGH IDLING SPUTTERING.

Timing belt

i would take it back. they should cover it. sounds like mass air flow sensor. if it was barelly detailed it water might of seeped into the intake thus sucking small amount of water which then causes sputtering and a little lack of power.

could be the EGR valve stuck open. Do you have a check engine light on? If yes then drive it to Advance Auto Parts and they wil check it out free of charge and tell you what code has come up on your car's computer