It happens during acceleration, it almost sounds like a vacuum picking up rocks. It won’t happen if I’m in park and rev the engine, only in drive. I haven’t tested it in reverse yet.

 

does it happen only when going over bumps in the road ? to my ears it sounded like as if a bumper liner/undercover was flapping around or some kind of shield panel (heat or dirt shield) loose.

 

Unfortunately not. It only happens during acceleration.

 

When was the timing belt done ? and was the tensioner replaced as well ? Asking because the only other thing I can think of is the timing belt tensioner on its way out. Its a fairly common issue on this car. I have it too but mine sounds more like a metallic rattle during acceleration only and I am hoping the timing belt service next week will fix it.

 

I’m taking it in for a diagnostic on Monday, so hopefully I’ll find out soon.

 

Apparently, a couple of heat shields have come loose. One will cost $1000-$1500 to fix 😭

 

Just yank 'em off and forget about it. Don't park on dry grass in the summer anymore!

 

I park on asphalt 😂 and I yanked it off and the baby is as smooth as butter again 😍

 

Just curious, at $1000-$1500 to fix, which heat shield(s) below was / were causing the problem (#3; 4; 17; 18; 19)??

 

Acura said it was the one closest to the firewall, but they took another one off and there’s no more sound. I’m not sure which one they removed.

 

Probably #6 and / or #7.
#4 & #5 are up front near the radiator.





Retail price for those two possibly removed totals $72.27 and they wanted 1000-1500 to fix, lol.

 

I agree with you. We all know how they work. But to be fair, they told me instead of paying $1500 for the harder to reach shield, I could just clamp it to something to hold it in place.

 

Nice, glad you got it sorted out. My guess (or at least one of them) was right on the money! but yeah thats too much money
Enjoy the smooth ride.

 

I ripped mine off. If you get a new one, it will get loose again. You won't notice it unless you drive down a residential street and you can hear it echoing.