Cooling issue on highway

SlantedDart said

Maybe not zero air flow but I took the fan off to cut all the pass throughs and at some point on the freeway the fan distorted enough to scuff and melt the plastic on the fan.. it’s not letting air through it’s flexing the fan itself to let air through

Click to expand...

That is odd. The air speed if greater then the fan can provide should just cause the fan to spin faster.

I am in the mechanical fan crowd. Tried and true.

I also think you are trying to control the coolant temp too closely.

A 20 deg difference depending on conditions is nothing.

Set the fan to a temp just over the normal highway temp, if the temp goes that high the fan will turn on and bring it right down.