Question about 2003 Pontiac Grand Am

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Water pump? After my car overheated I noticed the overflow reservoir had a crack in it .I repair that then on my home from a 125 mile road trip I started hearing like a vibration in the front of the car ,it drove ok so I know it wasn't tire or steering related although when I applied brakes it seemed louder for a moment then you couldn't hear noise when car was stopped.The car ran @ 200 degrees on the way home,it was dark so I couldn't see well under the hood to see if anything.What kind of noise would it make if water pump is going out?

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Hello! If you're water pump is failing, you may or may not hear anything at all. At most, you may hear a whine, or squealing noise; but more often than not you won't hear anything. The high temperature that your car is operating at is a concern and needs to be addressed ASAP, as further and much more costly damage can occur very quickly if the cooling system is operating normally. Be sure to check coolant levels, ensure that all caps are in place securely. It might be worthwhile even to have your coolant system thoroughly flushed and refilled.

The sound that you describe, and the scenarios in which you do and don't hear it - suggest to me that you have a problem with the braking system. More specifically, you likely have warped rotor(s). If your steering wheel shakes when you apply the brakes, then this will confirm this theory.
If the steering wheel isn't shaking when you brake, then the next thing I would suspect is the wheel/hub bearing assembly. When a wheel/hub bearing goes bad, you will often experience vibrations, and a sound that is best described as a growling type of noise, much like that of excessive road noise.

I hope this helps, and good luck! Thanks for using FixYa!

Posted on Oct 04, 2009

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