Stalling at low idle is normally the Idle Air Control valve, or IAC. It's under the throttle body and has a coolant line going through it. It can be cleaned and replaced with a new gasket, the air passage tends to get pretty gunked up.

If you suspect plugs and wires and you haven't replaced them in a while then just buy new ones. They are regular maintenance items. Go with NGK or DENSO double ground plugs, metal type doesn't matter. Wires should also be NGK or DENSO. These are the OEM parts.

Fuel pump failure is not common but very possible. However before you toss the pump, change the fuel filter as they can become clogged a restrict flow. It's located under the driver's side of the vehicle under a plastic cover if you still have one intact. Actually, 2WD 4Runners don't have a cover so it's probably exposed and easy to see. Be sure to use a brake line wrench on the compression fittings or they will strip and you'll never get them off. Doesn't have to be Toyota filter but don't go too cheap.