Guys,

I'm hearing a really faint buzzing sound when I'm driving at highway speeds only. I recently replaced the fuel filter, spark plugs, and pcv valve. I can't really pinpoint where the buzzing is coming from, but it seems to be coming from the front of the vehicle.

Has anyone else experienced this issue after performing a tune up?

 

Maybe your front motor mount, which have been known to buzz. If so, you want to disconnect it as soon as possible before it decides it wants to fry your ECU as well.

 

I was under the impression that 5-spds don't have electronic engine mounts ... am I wrong?

 

Is it a buzz , vibration , does it still happen if you're rolling in neutral, can you hear it with the windows down ?

There are so many variables with sounds at high speeds....I thought my car had a problem back at my summer pad until I realized it was the wind out in the country being a lot more powerful than in the city and basically "whistling" under my car on the highway.