HUMMING noise when decelerating

1. Thapoe Newbie Joined: Jan 2013 Reading Posts: 8 Citroen Saxo VTS

   #1 10th April 2013, 18:15

   I have looked all over the forums but can't find the exact problem that my Saxo has. I have a Saxo VTS, when you release the accelerator pedal the car seems to make a humming sound but goes straight away when you accelerate again.
   
   This happens in all the gears... does anyone know what it could be? (only happens when decelerating, and can feel it a tiny bit on the pedal)
   Thanks everyone
2. Jizanthapus Saxperience Forum Bum Joined: Mar 2012 Posts: 3593

   #2 10th April 2013, 18:17

   Wheel bearing possibly?

   1 user thanked this post: Thapoe
3. user_39461 Super Moderator Joined: Nov 2009 Cambridge(ish), UK. Posts: 10581 BMW 5x M50d.

   #3 10th April 2013, 18:21

   As you come off the accelerator you're loading up the output shaft differently and it sounds like that. A lot of cars do that - is there a reason you think yours is worse than normal? Has it suddenly got louder?
   
   Check level of gearbox oil and consider replacing oil anyway.
   
   See if that helps.

   1 user thanked this post: Thapoe
4. Thapoe Newbie Joined: Jan 2013 Reading Posts: 8 Citroen Saxo VTS

   #4 10th April 2013, 21:30

   Thanks for quick replies... It is quite loud when it happens. It doesn't happen all the time. It's quite strange because it first happened about 2 months ago whilst coming back from a long drive. Then it started happening again since 2 days ago after installing some Bilstein shocks - once again though, on a longish drive. Doesn't happen when just a quick drive.
   I will get the g/box oil changed asap
   nice 1
5. Thapoe Newbie Joined: Jan 2013 Reading Posts: 8 Citroen Saxo VTS

   #5 10th April 2013, 21:31

   Also it has been lowered by 60mm on the front
6. m11ler Saxperience Forum Bum Joined: Sep 2010 Kent Posts: 4908 Posi VTR, Eunos Roadster

   #6 10th April 2013, 21:37

   Have you checked the drive shafts? Mine used to do something similar to that upon weight transfer, eg coming off the accelerator etc, and gradually got worse.
   Just give them a quick check for any splits etc.

   1 user thanked this post: Thapoe
7. user_39461 Super Moderator Joined: Nov 2009 Cambridge(ish), UK. Posts: 10581 BMW 5x M50d.

   #7 10th April 2013, 22:24

   Could just be gearbox oil tbh. Sounds likely (cheapest/easiest thing to replace too). Long drive = hot gears / oil = possible noise. Get it changed and see how it goes.
8. puddy Infrequent Poster Joined: Jul 2011 colchester Posts: 219 Phase 2 black vtr :)

   #8 11th April 2013, 01:53

   Mine does this since i lost half the oil when changing struts gonna fill the gearbox up tomorrow

   1 user thanked this post: Thapoe
9. Dawzy L-plater Joined: Apr 2013 kent Posts: 50 Black vtr

   #9 13th April 2013, 17:05

   Mine does this also if I stick at 60/70+ mph for a long time let of the throttle and I have a loud humming but stop and pull away again it's fine until I stick at 60+ for a while again :/
10. Thapoe Newbie Joined: Jan 2013 Reading Posts: 8 Citroen Saxo VTS

    #10 13th April 2013, 17:12

    That's pretty much the same as what happens on mine.. Soon as I get the chance I'm going to change the g/box oil and hope that sorts it out
11. Dawzy L-plater Joined: Apr 2013 kent Posts: 50 Black vtr

    #11 13th April 2013, 18:54

    Yeah same with me it's just funds at the moment haha .. I don't know weather to stay with a vtr g/box or go vts some use a 1.1 g/box but I don't know what difference out the 2 will make :/
12. Thapoe Newbie Joined: Jan 2013 Reading Posts: 8 Citroen Saxo VTS

    #12 13th April 2013, 19:24

    Lol I know the feeling mate I don't know what difference it would be but I can't imagine you would get much top speed with a 1.1 g/box. The person who posted on this thread "ROSS" will probably know... Good luck
13. user_27150 Established Member Joined: Sep 2008 Glasgow Posts: 1452 Saxo VTR

    #13 18th April 2013, 22:11

    Rather than staring another thread I thought I would put it in here coz its basically the same. When I started driving the car there I was driving for about 10mins and then occasionally when I take my foot off of the accelerator there is a pretty loud vibrating noise. It seems like it is coming from either around the stereo area or the centre console. It goes away again when I accelerate. Any help guys? Also when I turn full left lock it sounds like the wheel is rubbing but it's not lowered so cant be?
14. Thapoe Newbie Joined: Jan 2013 Reading Posts: 8 Citroen Saxo VTS

    #14 19th April 2013, 14:10

    Quote:

    Originally Posted by saxo_90 Rather than staring another thread I thought I would put it in here coz its basically the same. When I started driving the car there I was driving for about 10mins and then occasionally when I take my foot off of the accelerator there is a pretty loud vibrating noise. It seems like it is coming from either around the stereo area or the centre console. It goes away again when I accelerate. Any help guys? Also when I turn full left lock it sounds like the wheel is rubbing but it's not lowered so cant be?

    It sounds pretty similar to my one but on my car it only happens on a long/ish drive, definitely longer than a 10 minute drive. I will be changing the g/box oil very soon as someone mentioned that it is more than likely where teh oil gets hot and doesn't do its job properly. Good luck
15. vtrtommie Infrequent Poster Joined: Oct 2012 Wiltshire Posts: 175 52 1.4 furio, 01 1.6 VTS 16v

    #15 21st April 2013, 23:10

    hey guys just posted a thread, im having same problem, wondering if you have solved the issue?
16. user_27150 Established Member Joined: Sep 2008 Glasgow Posts: 1452 Saxo VTR

    #16 7th May 2013, 21:04

    Quote:

    Originally Posted by vtrtommie hey guys just posted a thread, im having same problem, wondering if you have solved the issue?

    Not had a free minute to look at it but its still there. New to get it sorted soon