Turbo Boost / Vacuum Mount Fault TEMPORARY Free Fix

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This is a fix for the Euro 3 163 D5 ONLY.
Both my vacuum mounts are leaking so this temporary fix stops associated boost issues from developing. As an Amazon Associate I earn from qualifying purchases. Using my Amazon links does not cost you any extra.

[@TheOnlyToblin]

You're like the King of Miatas, only for Volvo D5's. Since I own a D5 these days with a KINDS of problems, your videos have been a lifesaver. I actually have the vacuum line for the mounts blocked off on mine, as they're leaking pretty heavily.

[@stuarthills7676]

Omg this is fantastic work thank you 😊 now I’ll get the mounts done !

[@dentonalewis00]

Thanks for making the video, it's very helpful 👍👍👍

[@FRNIKULA-KLIKER]

Usefull info thanks! I was concerned about it.. Beat regards from Slovenia

[@therucha]

That's wounderful, with this fix the fuel economy should improve til i get the mount replaced, thanks a lot

[@deanpatrick2118]

Instablaster...

[@yinkasantacruz6708]

I’m having issues with my 2005 xc90 T6, that hose in mine seems dormant and not connected to anything, one hose from the turbo control solenoid goes towards the back of the engine, one goes to another plastic maybe it’s called intake pipe and the third one is dormant. Any idea where it goes? I think they have colored clips on the solenoid like green red yellow

[@TheSimonhammond]

Can this cause "hot starting" type of symptom? I.e I stalled it but it takes longer to restart.

[@bilfepur]

+Sirobb Does it have that much affect on the boost? Doesn't the controll valve close at 1000rpm? - Pætur

[@sirobb]

+Pætur Dalheim Kristiansen Vacuum loss can have a huge effect on boost on a Euro 3 D5. The engine idles at 700 rpm so you could lose vacuum before the TCV closes and the turbo VNT mechanism will be in the wrong position so no little or no low rpm boost.

[@michielvanlieshout2012]

SiRobb So you will start of with a wrong position of the VNT? This wont be compensated for when the control valve closes above 1000rpm and the leak is thereby gone?

[@13prime13]

Hello sirobb, will you get more vibration for the engine if the vaccum (mounts) system is leaking? Got the same "popping" sound as you and a lot of vibration. Just changed the upper strut bar engine mount and the lower engine torque mount. Still alot of vibration.. Need help with this, but i want to fix it myself :) Driving a D5 v70 2003.

[@sirobb]

Ole Drageide Yes you will get more vibration from leaking vacuum mounts. You need a cheap vacuum tester and there are vacuum mount testing videos on my channel.

[@13prime13]

SiRobb thanks! :)

[@haniap08]

Hi SiRobb! I am trying to trace a vacuum leak in my D5 for about a 6 months now with no results. Seen many "specialists" so far and no signs of a cure or a proper diagnosis.The ABS light comes and brake assist/anti skid service required information on the dash up after accelerating to 40-50mph and the car makes a whining sound when above 1200 rev (louder when cold).I found that the ABS ring is snaped and the brake pedal positioning sensor is faulty (will fix myself).I have disconnected front engine mount as it was leaking slightly but the popping noise is still there. When I unplug the brake servo vacuum hose from the pump it stops but there is no signs of any leak around the brake pedal.I have replaced all the hose clips along that hoses and alu pipe.Could it leak from the o rings somewhere there? Just to mention there is a valve cover gasket leak (quite bad).Have been told it is a breather blocked.Clean it all up was all working fine.Removed the EGR valve as well and cleaned (was not blocked).I am running out of ideas.Please help if you have any suggestions.Thanks Jacob

[@norbertloboncz1962]

Hello Izabela! Did you find what was the cause to your problem? Because I have the exact problem with my D5.

[@michelbangevents8075]

THIS FIX IS SAFE FOR ENGINE ?

[@scottgeoghegan8282]

SisRobb could you help me my xc90 2004 under acceleration it's hissing and going in to engine management mode any help ?

[@Marginal391]

Thank you, but in my case I have no vacuum at all. Replaced the valve to no avail. Could it be an electrical signal malfunction as the wires on the connector were loose and I used silicone to stop them from moving further more? Regards.

[@sirobb]

Check the vacuum supply to the valve and from the vacuum pump.

[@geoffreygcotton]

Hi Si , I had the popping noise with the Filler cap removed , blocked the valve outlet and the popping disappeared, brilliant thanks for that, does this mean the rear mount is okay? Many thanks great work

[@cbv8]

Hi SiRobb brill vids as always very helpful but if i can pick your brains please ie i have just bought a really cheap complete engine mount kit from MaXpeedingrods for £102 inc del which look very good quality. BUT the vac mounts have no vac connectors and are solid mounts would it be ok to fit these and blank off the engine vac pipes as explained in your vid or will this lead to damage in the engine eventually? Chas.

[@sirobb]

It's entirely up to you but you won't get the engine damping as designed and will almost certainly have additional vibration so I can't say that it will definitely be ok.

[@cbv8]

@@sirobb ok thanks for the reply your opinion is much appreciated I think I may fit the rest of the mounts and buy some proper vac mounts, Chas.

[@sirobb]

@@cbv8 No problem. If you see my video here kzbin.info/www/bejne/g2rZYn-EisSImJI you will see that you can buy the correct vacuum mounts without paying crazy money. Hope that helps.

[@cbv8]

@@sirobb Hi SiRobb i decided to go for proper vacuum mounts in the end but am still awaiting there arrival i am due to travel to do a 400 mile round trip Monday. Can i temporarily block off the turbo control valve as both my mounts are shot and i have the dreaded engine popping as always thank you for the very helpful vids and advice, Chas.

[@sirobb]

@@cbv8 You can and you don't really have a choice if you're insisting on driving it. The decision is entirely yours though as I can't recommend it.

[@attika733]

good?

[@harris19900]

Hi Rob, for how long can I block the pipe? I have exactly same problem and when I close the turbo control valve with my thumb it's stopes. Many thanks :)

[@sirobb]

Lucas Harris If you do this fix, you won't have any vacuum in the mounts and they won't work correctly. This MAY stress other mounts over time so how long you leave this fix is up to you. I did it for about 2 weeks.

[@harris19900]

I have euro D5 185BHP 2006 V70. Do you have your garage or you just fixed for your self ?? What if I won't block the pipe and drive like that what can happend??

[@phillowery7622]

Hi Rob, Sorry to bother you but I'm having trouble. I'm in limp mode , but if I start the car and immediately hold the revs above 2000 it runs fine, 20 seconds on Rickover

[@phillowery7622]

Sorry wrong button!! 20 seconds on tickover and it reverts back to limp mode. Would it be the turbo control valve? Sorry to trouble, you . Cheers Phil. Xc90 d5 e3

[@ek763]

Hello sir i do hope you will reply even tho this video was 8 years ago. I have the same noise and it goes away if i plug the hose but is this nececcary. Does it cause damage to the engine or turbo if i dont plug the hose since there is no noice when the oil cap is on. Or does it cause engine or turbo damage when it is leaking? thanks in advance

[@sirobb]

It depends on the design. If you have a vacuum adjusted turbo, vacuum system loss will cause performance loss. If your turbo is operated by a motor, turbo performance will be unaffected. Vacuum loss in general needs fixing regardless though as it assists braking so do the job correctly whichever.

[@ek763]

@@sirobb absolutely amazing that you are still replying thank you sirobb. But How about the engine does this kind of vacuum leak cause engine damage or does this only affect the turbo and performance. Thanks once more

[@gangigooga7710]

Hi Sirobb. After using a screw it still won’t seal. What kind of screw did you use? What else instead of a screw could be used to seal it? Thanks

[@sirobb]

A golf tee held with a cable/zip tie can work well.

[@gangigooga7710]

SiRobb what about duct tape? Tight seal and rubber band to seal it off with?

[@sirobb]

Anything that will make it air tight will work.

[@mthunzin]

Hi Rob. I have a 2010 XC60 D5 and it makes a whining noise when I'm accelerating hard. What could be the problem?

[@andrewhook9415]

Did you fix your whining noise? If so what was it?

[@smartcassual]

Timing belt pulleys

[@grahammason4661]

Does the xc90 not have electric turbo control?

[@sirobb]

Depends on the engine and what you mean by electric turbo control. Euro 3 D5 is a vacuum actuated VNT and the vacuum is controlled by the boost solenoid at the front of the engine. Euro 4 VNT is controlled by an electric servo.

[@ziouzitsou7]

I have same problem too on my s60 t5. If i close tcv line may it works? Thanks

[@sirobb]

The T5 does not have vacuum mounts.

[@ziouzitsou7]

@@sirobb tcv vacuum lones. Maybe my tcv not working correctly? S60 2.0t is.my.model

[@sirobb]

@@ziouzitsou7 You need to test any valves which control vacuum. kzbin.info/www/bejne/p6fTm5uEYpd3mqs

[@ziouzitsou7]

@@sirobb thnx for your replies bro... i bought a new TCV from porsche...il test it this week and i let you know what happens.. i wish that fix my problem.

[@brucehauser6826]

My V70 D5 163 has this popping issue, blocking it off as you do here makes no difference, car had its last service at a Volvo dealer, they agreed it had a noise but couldn't find the fault.... :/ (They did a vacuum test) The engine is smooth and the car drives fine.

[@sirobb]

Test directly on the vacuum pump with a gauge and by blocking off. See my vacuum pump testing video.

[@brucehauser6826]

@@sirobb Appreciate the reply, Sir, Thank you.

[@jonathanparker4597]

hello rob I have done the check as you have shown but the popping stays the same there is suction. what else could it be ?

[@sirobb]

What checks have you done?

[@jonathanparker4597]

As per this video that you have done, as I was interested to see if mine was doing it and to be hold it was. If I block engine mount hoses it still pops loud got a few issues with it changing the turbo this weekend and engine flush. Have no experience with vacuums on cars.

[@sirobb]

+Jonathan Parker The checks depend on whether you have Euro 3 or a Euro 4 onwards so see my D5 vacuum system explained video in my playlist called "cars". There are various tips on there.

[@jonathanparker4597]

+SiRobb it's a euro 3 looks like I'm best buying a vacuum tester and checking the pump first. thanks

[@sirobb]

+Jonathan Parker +Jonathan Parker Yep. Vacuum testing without a vacuum tester is ermmmmm tricky. ☺️ The good news is they're dirt cheap and have several uses so great value. Buy an ELM327 dongle too for about a fiver and check my boost solenoid cleaning videos (plural).

[@thomasdeklerk5202]

Sirobb, i have a 2007 v70 2.4d (not d5) with 163 hp with this popping noise, i have now blocked off the same pipe as you have. But it still is popping the same as before. Any recommandations?

[@sirobb]

Test the vacuum pump directly. There's a vacuum pump testing video in my list.

[@thomasdeklerk5202]

​​@@sirobbi tested the turbo control valve for leaking with a smoke detector, is was leaking from there, can that also cause the popping noise? Also checked both mounts and they are new

[@sirobb]

@@thomasdeklerk5202 I repeat. If you suspect a vacuum leak, use a vacuum tester. You will see the leak immediately. The popping noise is a "fault" if performance, data and testing shows a fault. Do you have performance issue? If all you have is a noise with the oil cap off, why is that a problem for you?

[@thomasdeklerk5202]

@@sirobb i dont really have a performance issue no, but i want my vacuüm system to be good for when i go to remap it and get more out of the engine and turbo so i want that all to be good. And with that popping noise there still is a leak somewhere. Will try a new valve and if thats not working ill go and have a look at the vacuum pump

[@sirobb]

@@thomasdeklerk5202 Vacuum testers are so cheap, I'd directly test the pump then the rest of the vacuum system first. Your car though so up to you.

[@eddieringman2452]

Hello, work this fix on a euro 4 or only for euro 3?

[@sirobb]

Euro 3

[@eddieringman2452]

@@sirobb I test on my euro 4 and it works

[@yliminite]

use aloth wd 40 man and kitchen roll

[@TheArabtheevz]

Hi pal any chance i can get a contact number i just wanted some advice about how to test my vacuum pump as i suspect its fualty i am located in Lancashire cheers Roy

[@sirobb]

Hi. I'm sure you'll understand why I won't post my number on the internet. 😊 What symptoms do you have?

[@nickflynn1865]

@@sirobb hi sorry to impose here,, I could really do with your help,, I have the 2.4 185bhp d5 and I'm getting no boost at all, there's no leaks anywhere and the pipes to the intercooler seem to have a lot of pressure running through,, the turbo is brand new