My radiator on my T5 transporter is not getting hot and bottom hose stays cold top hose gets hot. Engine temperature gauge work's normal. Heater blows hot air .dose eny one have eny ideas? I had a coolant leak couple of weeks ago it turned out the cylinder head was cracked now I have had new head gasket and cylinder fixed new cam belt kit New water pump. As said before the radiator bottom hose is not getting hot and the radiator but the temperature gauge is working normal and the blower is working normal.