Quote:
Originally Posted by oldtamiyaphile
A hypermiler's radiator fan should never run.
Only time mine run is in the middle of summer with a full grill block - even then only really if towing. In normal driving the thermostats rarely even open fully.
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Ecky has your answer. I also live in a part of Cali where "mountains" of 500 feet are common. And there are a couple 800-1100 footers in my monthly round. My grill is heavily blocked. I find on the freeway in the summer I sometimes need to run the heater to keep engine temps below my 206* alarm on my Ultra Gauge. The on/off cycles of my pulse and glide seem to affect cooling by the ECU Not sure why.
Turning the rad fan on, on demand would be awesome.