Only on hot days temp gauge reaches less then half way car won't start up again till completely cool down.. I give it gas it turns on but when I let the gas go it shuts off
My car has 200000 miles.
My car has an automatic transmission.
There may be 2 issues to deal with here. The inability of the engine to reach "normal operating temperature" (always the center of the gauge), indicates either a weak or failed thermostat, or a failed coolant temperature sending unit/coolant temp gauge. The difficulty starting and staying running is likely another issue such as a dirty idle air controller, throttle body, air leak in the intake system, etc. I would recommend YourMechanic dispatch a mobile, professional mechanic to your location to have them inspect your engine stalling and engine temperature issue.