Hello. Everytime I accelerate my engine makes a very loud humming noise which intensifies as I speed up. It has gotten worse over the last three months. It sounds like the the same sound a car would make if it was driving fast in a low gear - like the engine is working really hard. However, the RPM's are always normal. I just noticed on my last auto checkup from the spring, there was a note about worn front swaylinks. I have no idea what those are. Could these be related to the loud noise?