Originally Posted by Mich_525
The reason why that aux pump is there , is when the weather hits -10C, when you stop at a traffic light (at low rpm) the coolant flow is weak and no hot anti-freeze gets to your heater core , then your fan blows cold air inside the cabin. I were you I would rather fix it before the real winter starts
There was few cold mornings and car warmed up just fine, it may be few extra secconds of cold air but i dont mind.
Im just concerned if removed aux pump can trigger some other defects.