Started happening to me, as well, even w/the upgraded fan. So I stuck on another 10" fan in front of the radiator. No dice. I think too much heat is getting trapped under the hood. To test my theory, I'm going to remove the hood insert, and drive around on Mon & Tues of next week when the temp is going to be over 100 degrees again. We'll see what she does. I saw another member had ordered a heat extractor and put it on his hood, and it looked pretty good, so I ordered the same one for $95 on eBay. If removal of the hood insert does alleviate the situation, I'll be putting on the heat extractor in short order.
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