Runs great until engine temperature rises

Replaced PCM, Brain. Battery, Injectors cleaned, Tranny fluid changed, oil changed, Radiator fluid flushed and changed, cam sensor changed, crank sensor changed, cadilatic convertor changed, coil pack changed, 2002 dodge neon se. Runs perfect till temp rises halfway This car is driving me insane. Used to be able to drive it much further before it would act up with these issues. Please tell me you have the answer. Broke single mom is trying to get this f-ing car to run so I can let my daughter have it to drive my three year old grandaughter around. Cannot afford the dealer.