02/15/2026
Customer came in with a rattling noise, turned out to be a water pump bearing starting to fail.
No overheating yet. No catastrophic failure. Just a noise that didn’t sound right.
That’s the difference between reacting to a breakdown and preventing one.
When water pump bearings start going out, you’ll usually hear it before you see it. If ignored, it can lead to coolant leaks, overheating, and in worst cases, engine damage.
This one was caught early. Replaced the pump, inspected the system, and sent it back out the right way.
If you’re hearing something that “doesn’t sound normal,” don’t wait for it to become expensive.
– Cobb Mechanics