I’m at a dead end on my 325ix. I have been trying to make the heat work better all winter and I’m out of ideas. It blows room temp air at anything below 3k rpm. If I’m on the highway (above 3k) it blows warm air but not necessarily hot air.
So far these are the things I’ve checked and tried. New radiator, new thermostat, new water pump, all new coolant hoses, new heater core valve, and new heater core. I have bled the system numerous different times. I don’t know what else there is to replace. I assumed it wasn’t an electrical issue because it will blow warm air at higher rpm. Any help would be great, I have also noticed the top hose on the drivers side of the engine bay going to the heater core does not seem to get very hot like the bottom hose does.
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So far these are the things I’ve checked and tried. New radiator, new thermostat, new water pump, all new coolant hoses, new heater core valve, and new heater core. I have bled the system numerous different times. I don’t know what else there is to replace. I assumed it wasn’t an electrical issue because it will blow warm air at higher rpm. Any help would be great, I have also noticed the top hose on the drivers side of the engine bay going to the heater core does not seem to get very hot like the bottom hose does.
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