If you're still overheating then you have a problem.
Have you checked for a temperature drop across the radiator?
A clogged radiator will be much cooler in the center than the inlet and outlet.
You should see about 30 degrees difference between the upper and lower hoses with a progressive change across the core.
You aren't getting much circulation. Did you test the thermostat to verify it was opening?
One of those fans cooled Andy's 5.9 Magnum while laying on top of the engine. You're not having an air flow issue.
Oh, just to close out the thing with Johnny-boy I present this:
Quote:
Engine Fan Test
The radiator cooling fan is an important part of the cooling system operation. While a fan is not really needed while a vehicle is traveling down the highway, it is extremely important when driving slowly or stopped with the engine running.
When the car was in motion, the speed of the air entering the grill was sufficient to keep the coolant at the proper temperature, so the fans were shut off. When the vehicle came to a stop, there was no natural air flow, so the fan would come on as soon as the engine reached a certain temperature.
Taken from: http://www.familycar.com/classroom/coolingsystem.htm
Quote:
The fan is usually not needed when the vehicle is traveling fast enough for ram airflow through the grill to provide cooling (typically at speeds above 30 mph).
Taken from: http://www.aa1car.com/library/electric_cooling_fan.htm
Quote:
When moving at highway speeds, the cooling fan is not required to maintain the water-cooled engine at a safe operating temperature.
Taken from: http://www.wisegeek.com/what-is-a-water-cooled-engine.htm
Quote:
At highway speeds, the air flow through the radiator is sufficient to provide proper cooling without the aid of the fan.
Taken from: http://www.flowkoolerwaterpumps.com/info/cooling_system_overview.html
With that, I'm done with the highway speed debate.
For some people the world is, and always will be, flat.
