I have a delima and need troubleshooting advice. My fan comes on real slow. Once the motor heats up it stays on slow motion never kicks into high speed. I have changed the relay high one and it still does the same thing. Now if I run a wire directly to it and to battery it comes on high speed. Could it possibly be that cooling temp sensor? What else should I consider as well? Where is the cooling temp sensor located and is their a diagram for it please post. THanks?