Why my 94 toyota idle high and cuts off and hard to start back up

What is your question?

It will start up and run 2 minutes then idle high and cut off. Might start back up after letting it sit awhile. Then might run 5 to minutes. The fuel pump is pumping fine. I first replaced the coolant sensor to get it to start. Now it won't stay idle for no more than 10 minutes

What makes this problem better or worse?

Yes

How long has your 1994 Toyota Camry had this problem?

A week