2009 Acura TSX
Only have 2000 miles on my 09 TSX. About a week into having this new car I started hearing a sound upon acceleration. The engine was making what I would describe to be a "diesel" sound. Like I had purchased non premium gas. Faint but upon acceleration. Girgling sound. I never buy anything but premium gas ever. Anyway...I took the car to the dealer today, tech drove car and heard it right away. Then took the car into the shop to look further. Came out and said that the "DRIVE BELT TENSIONER" needs to be replaced. It is vibrating. Has anyone heard of this on such a new car? I am afraid that if he is wrong that this is a big part to replace and don't want to rip apart the car incorrectly. They ordered the part and will call when it is in but I want to be sure.

 

Belt tensioners are no big deal. Usually 1 bolt to replace them. Kinda surprising that the dealer didn't have the part in stock. The tensioner rides on a bearing, and it sounds like the bearing might be bad. This is a bit unusual on a new car, but this is why you have the warranty. Enjoy your new ride!

 

i heard the tensioners are a common problem on certain acura models like the acura tsx. my friend was diagnosed with the same problem and i often see acura forums with the same symptoms.