Hey i've got an 89 325i and over the past two days i have noticed a humming/vibrating from the engine and it has gotten louder and more continuous than when it started. I'm almost certain i've found it to be coming from the radiator. Anyone know whats goin on? Also, this is my only car right now is it safe to keep driving on it untill i can get to the shop on monday? The car doesn't overheat or act different in any way.
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