Heres my issue. I have changed the timing belt, water pump, thermostat, and have vw coolant 50/50 mixed. My a/c is working and the fans come on with it. I do have heat also but the fans will not come on. I am having an overheating issue were the top radiator hose gets to the point where steam starts to come out. Can someone help me out here. Really lost here?? thanks in advance!!