I recently had my timing belt replaced on my '02 Civic. When it came back it made a noise when idling and increased speed of the noise when pressing the throttle.
I sent it back in to the garage and they said they thought it was the belts plastic cover at first. No. So then they thought it was the bearings they just replaced, so they replaced them again.
I picked up the car again only to find that they had no clue as to where the sound originated from. They said it was safe to drive, even on my road trip over 3000 miles.
What do you think it is? (the noise sounds like a hollow rattle)
Thanks for your help,