I have a 2002 Dodge Ram 1500 two wheel drive with a 4.7 liter engine.

It's been overheating so I replaced the whole cooling system:

• I replaced the condenser cooling fan because its not coming on when the trucks getting hot. It comes on when I turn the AC on.
• I replaced the relays, also still not working
• I am getting no fault codes, no check engine light

The only other thing I think it could be is the computer.