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Old 02-24-2019, 12:30 PM
Russianblue Russianblue is offline
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Join Date: Jul 2010
Location: Charlotte, NC
Posts: 355
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ok, so here's the update. I replaced the bad thermostat and am now cruising at 90-93 instead of 78-80.

I put in a new heater valve.

I replaced the water pump and serp belt while in there even though the old one only had 50k miles on it.

The heater blows much hotter, which is excellent, but still no heat on AUTO from the vents. My theory is that the little wheel on the center vent that mixes hot air and cold air is broken. There is ZERO reaction when I roll that wheel from hot to cold or cold to hot. Is that a complex system involving multiple servo motors etc?

2005 X5 3.0 - 71k mi (9.2018) -> 81k 9.19
2003 X5 3.0 - 177k mi (9.2018) -> 186k 9.19
1988 528e w/ Bullseye s256 / MS2 Extra / GC Coilovers / Yukon Coils ~ 300+ HP - SOLD to buy 'the ring'
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