| | M54 Coolant Temp Sensor in Lower Rad Hose..
Need some advice. I recently replaced just about all my cooling parts: Low/Up hoses, Watermpump, Thermostat, Radiator, and both belts. Bled the system and started her up...No leaks! Hour later, it is leaking from the Coolant Temp Sensor in lower hose. It's the old sensor, you think the rubber 'O' ring shrunk or...?? Bought all my parts from Autohausaz.com. Thanks in advance!