BMW X5 3.0 temp drops with heat on
I have a new water pump, both temp sensors,Thermostat,heat pump assembly
and my X5 idles at operating temp with no heater on. When I turn the heat on
the temp drops below a 1/4 unless im driving down the road. I have verified it is
not just the gauge acting funny with a computer and watching the temp from the
ECM. It should stay at running temp. Thanks