Can anyone tell me why my v6 3.oL 5spd Mighty Max p.up would be stalling when I attempt to accelerate from a standstill when the steering is fully turned right or left? As well, I have noticed that the headlights are dim and the heater fan motor is lacking speed when the truck is idling, but when I give it a shot of gas the lights brighten and the fan motor speeds up. This seems to go away as the truck gets warmed up.

I have checked and replaced the clamp around the + battery terminal, and checked the - ground connection of the battery. I also checked the level on the power steering fluid. My next guess would be an alternator problem perhaps? How would I check this, or would there be something else causing this?