i got a 1987 ford mustang gt t tops with no mass air meter.........i just recently changed the upper and lower intake and spacer and throttle body and i never hooked up the map sensor and i drove around for a minute without it hooked up lots of black smoke........well my neighbor told me it needed to be hooked up and i did research and found out what and were it was and remebered i didnt hook it back up when i put my new parts on i did and the cars idle smoothed out and it quit smoken ran really nice for about 40 seconds and it just shut off.........wouldnt start so i waited a minute and it started and ran for about 30 seconds and shut off.......its as if the car is shutting down when it reaches running temperatures....does anyone got any suggestions