Jeep is overheating and studdering when i stop. We removed thermostat. Any ideas

What is your question?

Began a week ago i was driving and noticed the gage had went up to H. It then turned off at red light and wouldnt start back until it was cool. Everytime we fill it up with water it goes for about 20 min and will begin to get hot and we need to add water. Havent notice any leaking of any kind. We removed thermostat and it lasts alot longer without over heating but now the car studders whenever i stop. And when in park it shakes ...or spudders. Any ideas please

What makes this problem better or worse?

Better while accelerating

How long has your 2012 Jeep Liberty had this problem?

1 week