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Old 03-13-2019, 03:01 AM
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andrewwynn andrewwynn is offline
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Join Date: Jun 2015
Location: Racine, WI
Posts: 10,818
andrewwynn will become famous soon enough
Did you say you picked up a quality scanner? Nt510 will read live data for the coolant valves and the heater cores it's very helpful.

It also helped me solve a mystery that was bugging the crap out of me: why does my car have a heartbeat!?

If you listen close while engine is idling, and ambient temperature is 40-50F outside, you will hear an obvious lub dub sound exactly like a heartbeat; it turned out to be the heater coolant valves opening and closing.


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2011 E70 • N55 (me)
2012 E70 • N63 (wife)
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