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Old 10-15-2019, 10:33 AM   #1 (permalink)
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Retaining heat use during EOC

I'm not sure about the rest of you, but around here it has sure cooled off quickly. Just last week I was going to work and it was 60F out at 7 in the morning. Today it was 34F. So, I was using my heat today. And of course with P&G you kind of loose nice warm heat after a few seconds of EOC. A few more seconds later and its not real warm at all. A bit longer and you may find yourself turning down the fan speed so it doesn't blow cold air on you. Of course, as soon as you bump start, you're jacking the fan speed back up to get the heat back! This is obnoxious to me, so I would like to fix it. Its also a detriment to defrosting when you first start driving. This causes me to run my engine more just so I can stay safe and see.

My first thought thus far is to put in a small 12V coolant pump that runs when the engine is not running. It can be put directly on the 5/8" heater core hose. There seem to be more and more small coolant pumps available as more and more hybrid and start/stop systems are put in place. You can pick one of these up for about $36 on amazon.

12V coolant pump

I'm very open to other ideas for retaining heat use with the engine off, but this seems to be the simplest I can think of.

The next step would be how to turn it on only when the engine is not running. I don't really have any thoughts on that so far, so I would love to hear you guy's thoughts on how we could do this.

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