1992 Mazda MPV - need professional advice

I was driving and my car stopped when I speed up uphill.
I checked the battery, fuel, and also replaced ignition coil.
But the car still did not run so I towed it back to my apartment.

Car Spec:
1992 Mazda MPV
V6, 3.0L
2WD/4WD
Automatic
Power

Do you know what could be the problem.
Any advice would be great!

I've also replaced a new starter a few months ago.

I can start the engine but it is not running & powering all the parts..
seems like there is not much power...fuel pumps well, and ignition coil, timing belts are fine too.

if your engine is running not just cranking (starter turning engine) as in spark and igniting fuel but weak. first check for spark in plugs and distributer cap not corroded in the contact points check the air intake hose for cracks also check vacumm hoses and PVC valve. bat is good to? I would do this visual insp. first. Then i would check fuel for water and fuel flow. maybe when you going up hill fuel shifted to an area in tank that had rust or something and clogged filter? I would check these first.