Volvo Owners Club Forum - Engine: D5:

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- - Engine: D5: Hissing Sound (https://www.volvoforums.org.uk/showthread.php?t=288172)

Hi everybody,
How are you all doing?

My mane is Antonio, I have owned a 2002 S60 D5 for the last 2 years, and completely worries free.

Completely worries free except for an annoying hissing sound audible inside. This noise only happens on acceleration and deceleration.
For example, I accelerate to 100 mph the hissing is there all through, I then set Cruise Control, and the hissing disappears. I turn of C.C. and while deceleration the hissing is there. It happens in normal driving, without C.C.
I have a bad engine mount...

Anyone ever experienced this?

TY in advance

Sounds vacuum related. Could it be the seal at the brake servo? Does tapping the brake pedal lightly make it change?

Quote:

Originally Posted by Brendan W (Post 2463433)

Sounds vacuum related. Could it be the seal at the brake servo? Does tapping the brake pedal lightly make it change?

going to try going on acceleration and tap the brake...