Originally Posted by AllBlackBimmer
Did they flush and refill my coolant when they replaced the thermo? or is that only when they replace the WP?
When the thermostat went on my E46, the coolant also had to be replaced. But as the symptom of a bad thermostat is an engine that takes forever to warm up, I don't understand why your cooling fan was running so much. In my case, the car was fine in the summer, but ran cold with concomitant poor fuel ecomony (and little cabin heat) when the weather turned cold.