1994 BMW 325 IS had a water pump and radiator replace by a local repair shop. Within one week the fan broke into pieces. The fan damaged the radiator so both were replaced. The radiator was not replaced correctly and then the fan broke again. The repair shop replaced the fan and it broke again 3 weeks later. Suspect it is hitting the fan shroud. Repair shop suggests that my son is abusing the engine by the way he excelerates, causing the motor to torque therefore move enough to make the fan hit the fan shroud. I think they have not installed the radiator and fan shroud correctly. This is the third time the fan had broken. Is it the mechanic, my son, or maybe the motor mounts, allowing more movement of the engine?
Optional Information:
1994
BMW 325 IS