Answers: Yes, the fuel pressure regulator could be the problem, but it's more likely to be a clogged fuel filter, clogged filter sock surrounded by the gas tank, or failing fuel pump.
you might want to check the fuel filter on it,this will take home it not get adequate fuel and cause indistinguishable problems your having,it might also be a solid good view to have this trucks computer scan,and see if it has any trouble codes on it,that may give an account you some of whats wrong with it,you only about enjoy to scan every car and truck made now before you start to work on them,it may support you find your problem without spending a total lot of money,and auto zone or advance can do this for you for free,pious luck with it.
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