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      08-13-2012, 09:06 PM   #61
Chamberlin
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Drives: '06 Z4 M Coupe
Join Date: Jan 2012
Location: Tucson, AZ

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What about cooling issues? Does an electric waterpump keep running during these off periods? Everyone knows that when shutting off a hot car, the temps rise even higher since the water is sitting still 'soaking' up the heat. Here in Arizona it was 114+ today....can't imagine I'd want to sit in stop and go traffic with the already hot engine turning itself off every block, especially since the airflow is virtually nil at 5mph. So now, the battery(ies) are left to run the AC, and engine cooling fan and any other accessories, and then has to crank the motor up every complete stop? Sounds like a heck of a lot of engineering for minor benefit. Get those geniuses working on the real problem.....traffic!