Now I don't know if I'm being paranoid .but I have a 2007 Honda fit automatic with 109k.
for the past few months of having this car I've had to fix multiple issues since then it's been ok but I've heard some strange noises.
For instance while accelerating at 1000rpm light throttle I hear almost a plastic buzzing sound once I let go of gas it disappears sounds like it's coming from back of car. I did have a new aftermarket converter instaleld not too long ago.

Also when cruising at speeds of 40 mph I sometimes hear a almost like a jet engine sound it's like a bell ringing Almost it's not consistent and comes and goes but it's been doing it for awhile . I've had mechanics test drive it but they won't hear it or it doesn't happen. It doesn't make the sound when still or idle.
And finally the last sound I heard today upon putting my car into park it sort of made a creak sound like the muffler was shaking around or something again I have no idea. I just don't know if it's worth keeping the car and need fellow fit owners opinion.
Thank you.

 

jet engine sound? like a DC10? could be wheel bearings going bad.

 

Actually yes that's exactly what it sounds like. I had a mechanic try to give it some air and recreate the sound and test drive it but it didn't feel like doing it during the test.