car over heats even thought they changed the sensor are there two sensors ??

What is your question?

i just got a good used engine put in car now it over heats fan comes on when it wants to the car is not leaking so i went to have the temperature sensor changed and the guy at the shop showed me 2 codes that showed up on the computer P0117& PO118 so are there 2 sensors that half to be changed because he changed one