hissing sound

amolak

Active Member
Joined
Mar 22, 2003
Messages
275
Car
B200Turbo & V350
Hi,
After a few minute intervals, I keep hearing a hissing sound, like somebody is sucking air through a straw. It seems to be coming frm the air ducts. Is this the air con?
Is it normal?

thanks

Amo
S280 1998
 

Koolvin

Administrator
Staff member
Joined
Jun 1, 2002
Messages
9,947
Location
Staines
Car
W168, W169 & S202
sounds like a vacum pipe has come loose somewhere, lift the hood and see if you can hear anything there.....
 

Alps

MB Enthusiast
SUPPORTER
Joined
Nov 29, 2002
Messages
7,275
Location
London\Essex
Car
E55 2004 Silver(SOLD), E63 Weistec AMG(SOLD), E55 2004 Silver(SOLD), C36 AMG 1997 (SOLD)
air con
 

Brian WH

MB Enthusiast
Joined
Aug 21, 2002
Messages
6,283
Location
East Midlands
Car
JAGUAR XF 3.0D Premium Luxury
Originally posted by amolak
Hi,
After a few minute intervals, I keep hearing a hissing sound, like somebody is sucking air through a straw.
Amo
S280 1998

It's the Girlfriend/Wife taking a breath at the sheer power of the Acceleration.:D :D :D
 

clegsr

Active Member
Joined
Sep 1, 2002
Messages
251
Location
London SW16
Car
Later
Or it could be the headlamp self-levelling control - this works via a vacuum as well - try adjusting it to see if the sound changes. - Has anyone been changing the headlamps etc?
 
OP
OP
A

amolak

Active Member
Joined
Mar 22, 2003
Messages
275
Car
B200Turbo & V350
Another guy has said:

its the AC compressor cycling - perfectly normal when the AC is running

is this true?

Amo
 

Brian WH

MB Enthusiast
Joined
Aug 21, 2002
Messages
6,283
Location
East Midlands
Car
JAGUAR XF 3.0D Premium Luxury
Originally posted by amolak
Another guy has said:
its the AC compressor cycling - perfectly normal when the AC is running
is this true?
Amo

Have you tried switching off the AC when the noise is present?
Or turning down the blower speed to eliminate, or otherwise the AC from the equation?
 

Users who are viewing this thread

Top Bottom