What are you using to measure the coolant temperature? The dash gauges can be quite inaccurate, so having some other means to control temperature would be good. This may explain why your fan stays on even though the gauge doesn't suggest overheating. Your '84 CRX doesn't have OBD, but maybe something else would work?
In my case the coolant temp gauge in the dash stops at 90°C/194°F, even when my SGII was showing 114°C/237°F (broken fan in traffic jam during heat wave)!
Many ecomodders have their grille blocked only partially, and block off more during the colder months. Others have made their grille blocks openable. Here is mine:
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is
where you're going, not
how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
[Old] Piwoslaw's Peugeot 307sw modding thread