my trucks voltage guage stopped and my truck keeps dieing unless i give way too much pedal. it has been shuttering at 35 to 40 mph like it was starving for gas for awhile but it would stop if i feathered the throddle (dnt know if the 2 probs are rlated)

 

TPS is where I would start. Any codes? Or check engine light?

 

i just got the truck a month ago ,its been runnin ruff at 35 to 40 but voltage guage never moved ,then it kind progressed to stalling if i turned left sometimes to running fine in park but dieing in drive unless i over excell..check engine light has been on for about as long as i owned it