GMC SONOMA ENGINE NOT RUNNING

My Truck Is A 2.2 And It Use To Be An Automatic And The Previous Owner Changed It To A Standard And My Girlfriend Put It In D (drive) On The...

When The Engine Is Cold It Fires Right Away, But When It's Hot, It Cranks But Won't Start.

Had 02 Sensor Changed, Put New Plugs And Wires On Run For About 20 Minutes At Idle And Then Shut Off. Now No Start, You Can Turn Ignition...