HELP92 Lumina Euro Temp gauge spiking before engine is warm, idle probPlus more?

What is your question?

The temperature gauge spikes within 5 minutes of driving. But after I sit for 15 min and start again I kind of Gun IT and the gauge would go back to normal and drive perfect, just the low coolant light would stay on but No service engine light has ever come on and I checked to make sure the CE light is working. Now the problems worse because it started stalling or almost dies when I try to take off but it then dies when I stop at stop lighting stalls and sometimes starts but sometimes It won't and I have to wait 15 minutes. I checked to make sure the computer is working by turning they key and checking the dash lights. I replaced Coolant Temp Sensor And Temp sending unit/ switch, the Thermostat also flushed radiator and bled the system. I can try other things but wanted to seek help first. Sorry so long I try to be descriptive.