92 buck lesabre
plastic coupling that connects engine block to the water pump
(via rubber hose) broken
dug out the piece stuck in the block and replaced the coupling
ran for 10 minutesd or so and checked for leakage
the wife drove to work next morning (10-15 Km) and it broke again
maybe thermostat is stuck and the piece is melting??
tightened the plastic coupling too much (I don;t think so)
air in system when refilling coolant??
bad sensor??
anybody have similar problem and what is the cause??