Saturn SC2 Engine Hard to Start

2000 Saturn Sc2 Have To Pass Gas All The Way Down To Start And Have To Leave It There For A While To Get It To Stay On

Have Too Hold Down On Gas Pedal To Start Getting Too Much Gas Changed Temp Sensor Plugs Wires Cleaned Egr Vale It Also Dont Have Heat Temp...

I Replaced The Switch Behind The Clutch Pedal And When You Turn The Key The Lights Will Come On But It Wont Turn Over Problem Was Happening...