Whistling sound engine compartment
02-23-2009, 08:39 PM
#1
Out Of Control!!
Thread Starter
Join Date: Jul 2003
Location: North Scottsdale, AZ
Posts: 15,903
Received 4,415 Likes
on
3,145 Posts
'71 Pinto
Whistling sound engine compartment
DTB S-B-01.20/24 FEB09 ML63, C63, CLK63, E63, CL63, CLS63, S63, SL63, and R63 up to engine # 156698x 60 022000 - whistling sound from the engine compartment (in the area of the firewall) the cause may be a malfunctioning diaphragm in the pressure-regulating valve. The sound can also be heard for up to several seconds after the engine is switched off. The sound goes away when the engine dipstick is removed. To resolve, the valve is replaced.
02-24-2009, 07:10 AM
#3
MBWorld Fanatic!
Join Date: Apr 2008
Location: Ottawa, Ontario, Canada
Posts: 1,853
Likes: 0
Received 9 Likes
on
8 Posts
SLS Irridium silver,2014 GL350 BT Irridium, 2015 White Dodge RAM Hemi Quad
DTB S-B-01.20/24 FEB09 ML63, C63, CLK63, E63, CL63, CLS63, S63, SL63, and R63 up to engine # 156698x 60 022000 - whistling sound from the engine compartment (in the area of the firewall) the cause may be a malfunctioning diaphragm in the pressure-regulating valve. The sound can also be heard for up to several seconds after the engine is switched off. The sound goes away when the engine dipstick is removed. To resolve, the valve is replaced.
09-14-2015, 05:23 PM
#4
Super Member
just started hearing a whistling sound today from driver side of motor with hood open....so much for the 2012+ p31 motors being bullet proof
09-14-2015, 05:54 PM
#5
MBWorld Fanatic!
^ The motor is, that is just a little valve.
Man, you listen to every little noise on that thing dont you? Surprised you haven't busted out a stethoscope. May I suggest a Tesla? That thing is silent!
All kidding aside, you need to adjust to these things. I know you recently picked up your c63 so you're in that limbo phase on "is this normal or not." Trust me, the car will let you know if something is wrong. You aren't going to be cruising down the road and suffer some catastrophic failure out of nowhere. Get some more time behind the wheel and enjoy it.
Man, you listen to every little noise on that thing dont you? Surprised you haven't busted out a stethoscope. May I suggest a Tesla? That thing is silent!
All kidding aside, you need to adjust to these things. I know you recently picked up your c63 so you're in that limbo phase on "is this normal or not." Trust me, the car will let you know if something is wrong. You aren't going to be cruising down the road and suffer some catastrophic failure out of nowhere. Get some more time behind the wheel and enjoy it.
