Mack ms200 Renault started running hot1998

I have a 1998 Mack MS200 with the Renault engine, #5600 426-02 on the block.
It recently started getting hot on a return trip from Wilkes-Barre Pennsylvania, we live in Knoxville Tennessee.
We pulled the radiator and found it flow tested good, but a lot of the cooling fins were corroded away so we replaced with a new one.
We also found the electric fans for the cool the A/C coil were bad so we replaced them.
We took a trip to Bluffton S.C. last week And the truck ran hot unless we kept it...

Mack ms200 Renault started running hot1998

Mack ms200 Renault started running hot1998