please help, I have a 95 sc300 2jzgt, about two weeks ago it started to idle rough and stalls, the check engine light came on, code14 ignition reference no signal,code 47sub throttle position sensor signal and code 71 EGR system malfuntion, replaced the TPS, igniter, coil,spark plugs distributor, rotor, cleaned throttle body and cleaned EGR valve, also checked continuity in spark plug wires, they were good, all codes went away but car still stalling and idles rough, do anyone have a clue whats wrong with this car? Please help