Re: cooling system problems...i need some help
So are you saying that sometimes the car doesn't overheat, sometimes it does, even under similar circumstances?
Did it ever not overheat since you've owned it? From what you posted above it looks like a problem that developed recently, out of nowhere, not related to any changes done on vehicle.
Did you ever drive it before all the new stuff & did it over heat then?
Did you install all the new stuff or did it come that way?
Does it only overheat in around-town driving? Then it doesn't overheat on highway trips?
The viscous clutch fan is only for lower speed operation, not needed at high speed. I've never been a fan [hah] of the viscous clutch thingy, too prone to failure, poor low speed cooling.