Recent Topics
Got the last of the Silver/WPP SuperTech
by malibuguy79
03/24/18 10:51 PM
Store brand 75w90 vs name brand?
by presta24
03/24/18 10:33 PM
Which oil and filter
by ram_man
03/24/18 10:32 PM
2014 Jetta...coolant needing to be topped off...
by gregk24
03/24/18 10:16 PM
digital storm
by hyperscion
03/24/18 10:12 PM
Anyone use Mobil Super Synthetic?
by Carbon12
03/24/18 09:43 PM
Computer issues
by motor_oil_madman
03/24/18 09:40 PM
Oil for new 18 Stinger GT
by Spdfrk1990
03/24/18 09:38 PM
Free Oil Filters, you pay for the ride.
by Hootbro
03/24/18 09:30 PM
New Michelin Alpin 6 Winter Tire
by SubLGT
03/24/18 09:16 PM
Cordless Electric Lawn Mowers
by Snagglefoot
03/24/18 09:12 PM
New Husqvarna lawn mower
by Idahokid
03/24/18 08:40 PM
Chrysler changing oil spec Grand Cherokee 4.7 H.O.
by Turbo
03/24/18 08:10 PM
2016 Tahoe LT 5.3 30K Mile Review
03/24/18 08:08 PM
Walmart now carries Super Tech DOT 4 brake fluid
by slacktide_bitog
03/24/18 07:30 PM
by wemay
03/24/18 06:56 PM
Some pics from work
by Stelth
03/24/18 06:56 PM
Snowblower issue. . . MTD w/ 5HP Tecumseh Sno-King
by Robster
03/24/18 06:29 PM
New improved Fran extra guard?
by Jake777
03/24/18 06:22 PM
Meijer $5 off $35 starts tomorrow (3/25)
by bullwinkle
03/24/18 05:46 PM
Newest Members
Nathan75, NXFan, Searay18, bobgafner, Billis59
64536 Registered Users
Who's Online
57 registered (bdcardinal, 250SD_54V8, Boczech, 1JZ_E46, AZjeff, 6 invisible), 1121 Guests and 98 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
64536 Members
68 Forums
280402 Topics
4680992 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#4574869 - 11/15/17 11:20 AM volvo hum (no not the song!) 2009 C70
cudavid Offline

Registered: 01/21/09
Posts: 17
Loc: RI
Ok, wife's car, 65K , shares same platform as the 40 and 50 / 60 Volvo series cards I think.
Humming noise getting louder in past 6 months. I bet front wheel bearings and planned them some day, well then BOTH axle boots split between oil changes and spewed grease, ok, do new high quality GNK axles and SKF bearings(OEM), at same time.
No real change!

Ok must be tire noise, 25K on tires, did rotate again, no change, ok, screw it, new tires, no change!
Back wheel bearings feel fine, but will do them this weekend.
If this fails what next!. GRRRR

#4574886 - 11/15/17 11:41 AM Re: volvo hum (no not the song!) 2009 C70 [Re: cudavid]
meep Offline

Registered: 02/20/07
Posts: 3457
Loc: Southeast
does hum:
change with speed?
change with engine rpm?
change with gear?
change with load?
do it in neutral?
change with steering input?
change with brake input?
2018 F150
2015 crv (wifey!)
2009 s60 2.5T

#4574887 - 11/15/17 11:42 AM Re: volvo hum (no not the song!) 2009 C70 [Re: cudavid]
mk378 Offline

Registered: 09/27/15
Posts: 1273
Loc: USA
If you can hear it at low speed, stand outside the car and have someone drive past you while you listen to try to localize the noise source.

#4574925 - 11/15/17 12:25 PM Re: volvo hum (no not the song!) 2009 C70 [Re: cudavid]
AndyB Offline

Registered: 11/08/15
Posts: 9
Loc: St.Cloud MN.
Possible to jack up car and put on jack stands? You could then run it in gear and pinpoint the sound?

#4574944 - 11/15/17 12:47 PM Re: volvo hum (no not the song!) 2009 C70 [Re: cudavid]
Lolvoguy Offline

Registered: 02/06/14
Posts: 2058
Loc: Canada
Just make sure it's not coming from the engine.
If it's noticeable when the car is idling in place, I'd seriously suggest looking into getting the PVC system REPLACED. Failure to do so will result in blown engine seals.
06 Lexus IS350- Wife
88 BMW 325is- Mistress
03 Suzuki SV650S- One night stand

#4575092 - 11/15/17 02:54 PM Re: volvo hum (no not the song!) 2009 C70 [Re: cudavid]
14Accent Offline

Registered: 08/03/17
Posts: 290
Loc: MN
Does the passenger side axle have a stub shaft with a carrier bearing? That's my bet if it does.

*edit* Looks like the axle and bearing are one piece. Scratch that. I would look into the PCV as well. With the engine running and the noise happening, pull the oil cap. Is there excessive vacuum? Does the noise stop?

Edited by 14Accent (11/15/17 02:56 PM)