What parts do I need to fix it? Also why is this happening?

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Ok well first it started out it wouldn't start every so often u could here nothing but the fan running when u cranked it! Than it was once a day it did it&lucky if it didn't! Now it dies out at stops! While also barely pushing the gas pedal it slowly gains a bit of go while puttering slow to high to get going again that's even if it starts it usually does,but I have replaced the distributor coil&throttle positing sensor! These problems still occur just the cranking got a little bit better only still doesn't crank here&there! Also one night I noticed while I'm idoling at a stop the inside lights like the gas gage,speed jigger,flickers,but don't go totaly out just dim's in&out! Oh but not the outside headlights or break lights! Oh this sux&its stating to look like a pice of scrap metal a big money pit! I live off SSI&can't really afford to get another vehicle! Oh I for got to mention while its trying to gain speed it makes a noise! Also it has a hard time getting up little hills so ya better have speed while doing so or not make it! Oh did I mention it's well the puttering is like its idling funny almost like its not getting gas,but if u slam the gas it will die,just barely tap the pedal till I gets to going again! Really stressful when ur halfway across town trying to get home,oh if u have an important appointment for get it! Please help me I'm freaking out!