ok about the alternator i had it replaced not to long ago, i was at a party and i put my car to the "on" position and left my system on 4 a few then when the party was done instead of driving the car around i just parked it. then a couple hours later i went to my girlfriend house 70 miles away. i was driving and the car dash lights went on and the car lights started dimming. we made it to her house after we got to a gas station 4 a jump and then the car died again and we pushed it the rest of the way (2 miles) my buddy came up from home and replaced it but he didnt have the right size screw for the ring terminal to stay on and i didnt get the right screw until my car died going to six flags cuz he didnt tell me about it. the dash lights stayed on when my alternator died the first time . now sometimes when i start it they r on but after a minute of driving they go off.. wat about the code i got from autozone P1738 shoul di be worried about that