Quote:
Originally Posted by tcphoto
I owned an E46 for nearly seven years and replaced the thermostat twice because it was stuck open. I’ve owned my E92 for three years and only replaced the thermostat because the water pump died and it’s recommended to do both while you’re at it.
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There are coolant thermostats that open to allow circulation and also coolant temperature sensors that trigger the fan at lower temperatures. Like this:
https://www.bimmerworld.com/Cooling/...6-Euro-M3.html