still having problems with heater fan.. heat comes out of vents when driving normally but when I put the fan on it blows warm when driving but then goes cool when slowing down, but if the fan is off then it still comes warm through the vents. i have had a new water valve from BMW and a FSR that was after market, could it be a faulty FSR? It does not blow much until it is on 100% full anyway... not sure if there is a possibility that I have a bad one.. Been in the garage for a few days and he cannot find the problem. Help please...