I HAVE A 1995 MUSTANG GT 5.0 STOCK ENGINE. I have not been able to drive it since december. It has erratic idle, wont stay running when I give it gas, and does it worse when I try to move it. I have replaced the fuel pump (less than a year old), fuel filter (less than 3 months ago), fuel injectors (2 months ago), cleaned fuel rails, egr valve (replaced in december), tps sensor (replaced in december), replaced h-pipe, cat back full exhaust, and many other things. What could be my problem? Could the harmonic balancer have something to do with this? It's like it is choking to death or not getting fuel. You give it gas and it dies and wont start. HELP ME!