hande1971

Hi All,

Guys, I need help to identify a possible problem.

I have 2008 RDX Tech. with 91K miles.
Recently, I notice a strange sound AFTER i release gas pedal.

The sound like whoosh sucking sound or vacuum leak sound for about half a second right after i release acceleration pedal.

It is similar sound to those cars with aftermarket turbos when they change gears if you know what I mean.

The MPG is still the same as before.
I looked for hoses and leaks but cant find anything, because its not happening when idle, only when turbo engaged.

Do I have to look for some particular air leaks or special places?

Any ideas and/or advise?

vaprea

Seems like what you are hearing is the bypass valve which is located at the front upper section of the engine bay, connected to intercooler.

It has 4 or so vacuum lines which you should check. Also check all your intake clamps and piping for air leaks. The bypass valve dumps excess boost back into this whole intake setup.

Also note that this sound you are hearing is very audible with an aftermarket intake on the RDX.

russianDude

yep, its the hole in one of the tubes. I had same thing in mine. its about $150 to fix

vaprea

$150!?

I can replace every single vacuums hose on the RDX, and it would not cost half that price. Sounds like you got taken for a ride.

russianDude

Standard dealer prices... Try lexus/bmw dealer, and acura steakership will appear cheap to you

hande1971

Thank you for input.
Visually I can not find any holes or leaks.
I guess next step is replace all vacuum hoses from bypass valve, and go from there.