BMW Questions? Ask a BMW Repair Expert for Answers.
Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.
hey how are you
1- at idle ,with heat at max ,if you rev it up does it heat start to blow hot or no change ?
2- is the car overheating now?
Please let me know
ASE Certified Technician
How about the water pump ,if all above you mentioned been changed
or the heater core ,if the flushing produced rust looking water
there is nothing else there
not if it was weak at idle when you take off it will spun faster and keep the car from not overheating ,it requires more pump flow to reach the heater core
usually the water pump fails before heater core , we see heater core failure at high mileage like 150k and up
on that model the water pump propeller is metal not plastic
Please let me know if you need anything else on it