Good Morning,
Long time Honda/Acura owner, just got a 2008 TL with 90k on it.

• At idle it makes a loud sucking sound, as if it had an intake, which it does not. Its definitely coming from the passenger side.
• No foam in the PS reservoir, no change turning the wheel.
• Its not the injectors (I can hear those too).
• Increases louder with RPM
• No CEL

It should be due for 90k service soon, but wondering what it might be.
I have access to some good Honda mechanics, but not until next week.

Any help would be great. Thanks.

 

Does it increase or decrease as the car gets warmer?

 

vacuum leak?

 

No change with temp

Wouldn't a vacation leak throw cel?

 

*vacuum leak.