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heater noise - sounds like metal crinkling / popcorn maker - is this normal?


New Member
Oct 29, 2019
Hello all - it just got cold here and this is the first time the heater is coming on. I have a noise that I have not heard before. It occurs when the car is cold or the AC has been on and then the heat, so it is obviously caused by heat change. The sound is similar to thin metal being manipulated. This does not sound like plastic changing due to heat. Has anyone seen this before?
and here: https://photos.app.goo.gl/JNBwTu9R6oobB9LTA starting at around 20 second.

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