Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > S80 '06-'16 / V70 & XC70 '07-'16 General

Notices

S80 '06-'16 / V70 & XC70 '07-'16 General Forum for the P3-platform S80 and 70-series models

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

Xc70 suspension mounts

Views : 622

Replies : 5

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Oct 27th, 2020, 20:57   #1
Gazdkw
Master Member
 

Last Online: Today 12:06
Join Date: Apr 2015
Location: Leicester
Default Xc70 suspension mounts

Hi have the familiar popping sound from the oil filler cap. With my old v70 it was easily diagnosed as engine mounts.

However, with my 2008 I'm not sure it's the same problem. It's a d5 as was the v70 but different generation.

Anyway to tell if its defo engine mounts and if it is, is it the same change process as my 2006 v70
__________________
2008 XC70 2.4D SE
Gazdkw is online now   Reply With Quote
Old Oct 27th, 2020, 22:31   #2
Kev0607
Premier Member
 

Last Online: Yesterday 21:41
Join Date: Apr 2019
Location: Manchester
Default

My car doesn't have vacuum engine mounts (2007 S80 P3). As my car is basically identical underneath to the V70, I suspect this will be the same for your car. However, you could have a leak somewhere else in the system...

The P3 platform still has a vacuum pump though, but the turbo's aren't controlled by vacuum like the older P2 euro 3's (euro 4 turbo's are electronically controlled). Leaking engine mounts on the older euro 3's could cause turbo boost issues, which in turn affected performance. This isn't the case on the euro 4, but as there's still a vacuum pump, there still could be a vacuum issue if you're hearing a popping noise (brake booster seals, vacuum pump seals, pipework etc) are possible culprits.

Watch this video, which shows testing the vacuum pump in more detail. Its from an older euro 3, but the process is more or less the same.

https://www.youtube.com/watch?v=-lgYAS3GoiE
__________________
2007 (P3) Volvo S80 SE 2.4D (163bhp) - 109,000 miles. Black exterior with cream leather interior.

Last edited by Kev0607; Oct 27th, 2020 at 22:33.
Kev0607 is offline   Reply With Quote
Old Oct 28th, 2020, 09:07   #3
Gazdkw
Master Member
 

Last Online: Today 12:06
Join Date: Apr 2015
Location: Leicester
Default

Ok, so basically find the vacuum pump and check it's not leaking like in the vid?
__________________
2008 XC70 2.4D SE
Gazdkw is online now   Reply With Quote
Old Oct 31st, 2020, 03:04   #4
Kev0607
Premier Member
 

Last Online: Yesterday 21:41
Join Date: Apr 2019
Location: Manchester
Default

A slight popping noise & a bit of white smoke is normal for a D5. A loud popping noise isn't, as explained in this video;

https://www.youtube.com/watch?v=QHLyubTrIQ8

*Note, I don't think your car has vacuum engine mounts (my car doesn't & its identical to the V70 in terms of engine layout & suspension & the XC is similar too). I'm fairly certain you won't see a vacuum pipe going to the engine mounts from the turbo control valve (like shown in the video on a euro 3), as yours is a euro 4 & it doesn't have vacuum mounts as far as I know (double check this though). The turbo is electronically controlled on the euro 4 & not by vacuum like the earlier euro 3's (this is why vacuum issues don't affect performance as such on the euro 4's). However, if you hear quite a loud popping noise from the oil filler cap, there's some sort of vacuum leak somewhere else in the system (rule out the vacuum engine mounts though possibly because as far as I know, there isn't any (double check).

This video shows how to directly test the vacuum pump. If you do this test as shown & the needle on the gauge is flickering, then that indicates a leak with the vacuum pump itself. The seals in the pump can be replaced, or you can buy a new pump. If the needle remains steady, then the pump is fine.

https://www.youtube.com/watch?v=-lgYAS3GoiE

If there's no vacuum loss at the pump, then you need to test each part of the system by checking the pipes for any wear as you go along (which would cause vacuum loss) & hooking up your vacuum tester to each section of pipework to check the reading (check for a flickering needle, which indicates a leak in that particular section of pipe. If the needle remains steady, that section of pipe is okay). Then its a case of keeping going & testing each section of pipe as you go on, until you eventually find the culprit(s). You may come across split pipes, which have just worn out due to age & being in a hot engine bay. If you're lucky, you might see split pipework early on. Its not a five minute job testing the whole vacuum system, so allow time.

https://www.youtube.com/watch?v=0zsIa4Y2Tcs

Note, these videos are from a euro 3 car. The process is more or less the same in the euro 4, except you don't have vacuum engine mounts (as far as I know) & the turbo is electronically controlled (so there's no boost solenoid).

Thanks to cheshired5 for these helpful videos too.
__________________
2007 (P3) Volvo S80 SE 2.4D (163bhp) - 109,000 miles. Black exterior with cream leather interior.

Last edited by Kev0607; Oct 31st, 2020 at 03:19.
Kev0607 is offline   Reply With Quote
Old Oct 31st, 2020, 09:18   #5
Gazdkw
Master Member
 

Last Online: Today 12:06
Join Date: Apr 2015
Location: Leicester
Default

So how does one accertain if the popping is the standard volume or excessively loud?
__________________
2008 XC70 2.4D SE
Gazdkw is online now   Reply With Quote
Old Nov 2nd, 2020, 22:35   #6
Kev0607
Premier Member
 

Last Online: Yesterday 21:41
Join Date: Apr 2019
Location: Manchester
Default

Watch this video. You'll be able tell the difference between what is "normal" & what isn't.

Note, this video shows a euro 3 engine. The differences in the vacuum system are explained in my other posts above.

https://www.youtube.com/watch?v=QHLyubTrIQ8
__________________
2007 (P3) Volvo S80 SE 2.4D (163bhp) - 109,000 miles. Black exterior with cream leather interior.
Kev0607 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 12:46.


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.