Fan/Condenser/Trans Cooler Spacing

Okay. Here's the answers to your questions:

With the straight fan you can barely feel the air pull through the radiator. With the clutch fan set up you can definitely feel the air come through. I did not try the paper in front of the radiator/condenser. both of these tests were done while idling in park.

I did not try and stick my hand in front of the oil cooler. that only covers about a 1/4 of the surface area of the condenser, but it is also a good couple inches away from the condenser. I can try this test once I get home. This trans cooler has been on truck since we got it. I get conflicting stories as too when this cooling issue started to rise. I got everything from when the engine was changed, to the original fan clutch going out, to when the radiator was changed out.

Once the thermostat opens up you can see coolant flow. It is pretty slow at first (when the gauge is reading normal) but then you can see the coolant speed up drastically as soon as the gauge starts to move past where it normally rides.

The truck has had regular flushes every 3-5 years since we got it in 92. The radiator was new as of 2001 at 177000 miles I believe (I believe that is close, I dont have the maintenance records on me today). I just completed a flush/clean as of this past weekend.