Rough Idle 94 mustang 5.0
My 94 Mustang 5.0 has a very rough and choppy idle, car almost feels as if it has a race cam like when the idle is up and down a lot. My idle is not as bad when the car is cold but still jummpy the idle will go from 500 to 1000+ and back down sometimes dropping to as low as 300rpm and sometimes it drops so low it dies out.... I just had a supercharger, throttle body, new plugs and headers put on the car but I know that its not the extra draw of power because the problem occured before it was put on, I was actually hopeing that the tune aftre the supercharger may fix it but It didn't. Only other mods are Steeda 8mm wires, MSD Cap and rotor, MAC Offroad H-pipe and MSD blaster coil. Hopefully someone knows what could cause this, Thanks... Oh yeah my mass air was bad and that was also replaced at the time of the supercharger but as I said this occured before then also.