the best video my Volvo V70/1999 has 360889 Kms has Vaccum leak and ETS light is on thanks for helping us by uploading daignostic videos 💞

These videos are really good...really good. Thankyou for explaining what seems so complex, so easily. Many thanks.

Appreciate all your videos. I have a 80000 mile 2003 V70 140BHP petrol myself. Thanks for your time and effort making all the videos.

You sir just saved me a ton of time and headache, thank you very much for this info you are amazing!

Excellent tutorial video Simon. I kept having the "Engine Service Required" message coming up on the display. Now diagnosed as leaking engine mounts, I've temporarily blocked the outlet pipe from the solenoid which has stoped the message and improved performance somewhat due to having full vacuum to the wastegate. 😊

Just wanted to say thanks for posting all these videos & sharing the knowledge. Not got any real problems with our 191k S80 just yet, but it's still interesting to learn how the thing functions. I'm more acquainted with older cars (Love my old Citroen diesels) but very quickly becoming a convert to Euro3 D5 power the more I spend time in/on the car. Cheers, Dan. ("ma70" on the forums)

Woa thanks, my S60 D5 i recently bought was slow, i tought it was because an old man used to own it. I checked the vacuum hoses and discovered one was ripped in half, after i fixed it the turbo boost came back.

Another very helpful video! I have an intermittent vacuum leak 🧐

Excellent video. Thanks for posting this - very helpful.

Thank you, I love my Volvo I do not want to get rid of it I want to get it fixed I hope the way you explain this my mechanic can figure it out 🤷🏼‍♀️

Great educational video. Thanks

Your clear explanations are very much appreciated. I have a popping noise when I open the oil filter cap on my Euro 4 engine. It doesn't seem to affect performance and no error codes so far but I think I need to start doing more investigating.

great videos all around SiRobb, thanks for your effort!

Thanks for good explain

Hi Simon, Thank you for your job! Could you say a couple words about testing a break booster vacuum leak. Step by step. Best regards

Hi .How do i test a suspected break booster leak on Euro 3 D5.Thanks for all ur videos.Helped alot!

Great video!

This was an informative video thanks for sharing. I have 2005 Volvo s40 d 2.0 (hdi engine.) in the front of the engine where the manifold is, I have accidentally knocked off the vacuum pipes and have attempted to fix this but to no avail. There are 2 inlets on the solenoid attached into the engine under the manifold, 1 sucks (or blows) in and the other doesn't. 1 is on top and the other is just below it and they are close together. I am having trouble rearranging the 3 pipes (with a t attachment) to go to which pipe attaches to which pipe, and where then the 2 pipes would go into the solenoid. I have searched the internet and found your explanation and if you could help me with my problem, I would be deeply grateful. 1 pipe comes up from underneath. And the 2 remaining pipes come from the right of the engine bay. If you could help, many thanks

Great stuff 😊

Excellent video as usual, your content is of great value. Slight correction or maybe additional information ref later models, the 2.4D variant has a further vacuum feed to control a bypass valve in the EGR system, fed from the sub 1500rpm actuator by the air filter - same circuit as engine mounts. Have not quite worked out the normal operation but I think it holds off the bypass below 1200 to 1500 rpm until the engine is warm, which makes sense as when one of my engine mounts failed and I was losing vacuum, my V70 would often stall at the end of the road, but never further on as the engine warmed. I think this system is for manual transmission only, not autos. E & OE !

CHEERS MATE doing a brill job...doing stuff l never thought l could on my old s80 executive built in fridge and tv love volvos (sometimes)

good job thx

Hi Sirobb, great job with all those explanations! I have one speciffic v70 with d5 engine, and i have a question related with turbo, meaning do those engines have some king of bleed-off valve? Asking cause this car i am interessted is making sound like BOV when getting from high rpm to idle and, honestly, don't know if it is correct. Can you help? Thanks :)

Great video I have the popping noise from my late d5 xc90 2005 should I be tracing engine mounts and vacuum pump leak and not the pipes to the front by the CSI? Dan

Hi SiRob what RPM does the vacuum get removed from the turbo actuator as I have a fault that the car is a little sluggish. could it be the boost solenoid if so how do I test the boost solenoid. I have found a leak on my front engine mount which I will replace but still think there may be a issue with the solenoid. could you advise how to check the control solenoid. Many Thanks

Thanks SirRob!! Watched most of your videos, clear and articulate explanations. Very grateful i found your chanel! If you'll read my comment and have time to answer my question, I will be honoured. Have the same engine, eur 3 163hp on 2005 xc90 aut. No codes, except Air quality sensor is faulty.. Anyways, when i push the gas pedal, from cca 2200-3000 rpm i will get acceleration in steps (rpm will rise to 2300 rpm drop to 2250, go to 2600, drop to 2550 and so on, maybe 3 steps from 2200 to 3000rpm... Hard acceleration, or going uphill will be felt more), but after 3000 rpm it will accelerate normaly, maybe a bit sluggish.. Anyways im not trying to tickle your brain just wanted to ask you whether you think it could be related to vacuum loss somewhere in the system.. As Ive said no codes related to low fuel pressure.. What ive done: Changed fuel filter Cleaned boost solenoid with your video Tried to find PEM, can't find it, or havent happened to come across it yet as of today. Cleaned all contacts on fuel pressure sensor. Im quite lost, everything else works as it should.. (I should add that it is more noticible when car warms up) Im picking my brain real hard, Anyways, if anyone has some input what to check will be very gratefull. All the best and cheers, Very happy owner of my 2nd eur III d5.

I have a XC70 D5 AWD, 2010, have the ticking sound out of the oil filler cap (metal to metal sound), normal break function. Unsure if I have the solenoid, cannot see a turbo control valve.

Thank you for your great videos very informative, I have a Volvo V70 d5 and it's done nearly 200000 mile and I have black smoke behind me when I kick down, it looks like I am going to have to clean the EGR, Also I have never changed the transmission oil and I have had the car nearly 17 years, is it a big job to change the filter inside the gearbox ? She has been a great car,. Are there any other jobs you recommend doing at this mileage

Thank you for you videos. Should the boost solenoid hold a vacuum without engine running

Hello Sirrob 😊I saw many your videos,you have really much good ideas about D5,can I ask you about my D5? while driving I loosing power getting back and so on, without stopping engine,I thought if vacuum leak så I haven't power all the time,but in this case strange, sometimes it's power sometime none...

I am really curious about this system in the D5 Euro 5 engine with the 215HP Twin turbo 2.4L in the S60. It all very difffrent from the previous D5s and i cant find any tutorials on the newer D5. Its really frustrating. Would be great if some1 could help,

Heey Rob. Great video thanks. Question about the popping noise, i have blocked the engine mounts. But still have the hard popping noise. Can the vacuümpump leak internal to the engine?? When i pull the brakeboosterline popping noise stops, when i install it again loud popping noise starts again( same sound as leaking enginemounts) thanks in advance

Just replaced all my mounting and checked all the vac pipe work, all okay except I found a small length of electrical cable about an inch inside the boost Valve pipe supplying vacuum to the front and rear mountings, replaced that completed pipe but can still hear the popping sound on idle at a loss as to what is causing that still, the engine has it grunt back and loads of power compared to before the mountings replacement

I have a 2003 xc90 D5 euro3 and I have the popping noise and when accelerating from 0mph there is nearly no power and the when the turbo kicks in then it's fine. Could the problem be with the vacuum system?

Hi Nice explanation! My t6 has a whistle noise after the engine warms up and only at idle. It disappears after pressing gas paddle. It is unrelated to braking or not. Sounds like air suction. I have replaced pcv and also vacuum pump seals. Nothing changes. I suspect something related to throttle body closing. Is vacuum related to it? Many thanks!

Good video, thanks, but is that value called Turbo Control Valve when it only controls vacuum to the engine mounts? My D5 got oil in the vacuum line to the waste gate?

What is the purpose of a vacuum in the engine mounts? Cheers Pat great videos

thank you for all your videos. I have a problem which no one is able to help with. in My D5 Euro 4 (V70 2006), the vacuum line after the T (the one that goes towards EGR mixer) shows some oil. cannot seem to find the source but it seems to be from the vacuum pipe which I thought was not supposed to have oil but vacuum! Even before the leak appeared my car showed warning of 'engine system service required' and car had lost power (esp from gear 3 onwards). I cleaned the EGR mixer with Wynn and the performance seemed to improve but this oil appeared on the vacuum line which is feeding on to something near the EGR mixer. I cannot seem to get the warnings to go. If you see this post, please can you help me?

Hi Robb, I have the D5 185 engine and I cannot see that valve that you have on yours.

Hi Simon! I had one question about popping noise from oil cap. When I remove hose between vacuum pump and brakes main cilinder - noise come off, but when I plug hole with finger or put hose back to pump, popping noise is back! The part with VNT and motor mounts is fine , i have checked it with hand vacuump pump. What is my next step to find problem?

I have a quite complicated question, maybe you will know how to answer. As far as I've understood, the turbo geometry is controlled with vacuum in a way where: More vacuum -> tighter turbo geometry > more boost. Less vacuum -> looser turbo geometry -> less boost. So while the engine is at low RPM, there is maximum vacuum to ensure responsiveness of the turbo. When car accelerates and reaches higher RPM, vacuum is reduced and turbo will slow down a bit to avoid damage. If an overboost condition happens, the vacuum is reduced to 0 and VNT drops, completely loosening the turbo geometry and reducing boost. But here's the catch - with increase of engine RPM the vacuum shall increase as well, but for control of VNT the opposite behavior is required. Does that mean the boost control valve actually controls vacuum variably instead of in On/Off fashion? It feels weird to think that a solenoid is used for variable actuation, because in industrial use solenoid valves are always used in a binary fashion. I am currently trying to figure out why my car drops VNT when accelerating, seems to be an overboost condition, but it helps to understand how the system works completely - maybe my VNT is sticking or some vacuum is leaking that leads to overboost at inappropriate RPM's.

Hi sir, v70 2007 d5 when warm i loose all boost IF i have revs under 1500 and gets in to boost, IF its over or hits 1500 before peak boost it works well, No cel .. when Cold its better and doesnt cut boost all the time. What should i check? Nothing obvious in Vida

This explanation is for Euro3 with the vacuum motor mounts , do you have also an explanation for euro4 with the normal motor mounts

When popping noise on D3 engine, is different reason?

Do you know why the vacuum system relies so much on the engine mounts? I had to clean my TCV and replace the engine mounts, and voila... feels like a new car, got my power back :) but the onboard computer didn't told me anything about it, not even a generally: "Check Engine" or something...

hi, you know where is located the fuel temperature sensor¿? thanks

would this be the same for a 2004 xc90 t6. i have this code p0442 no can seem to fix, not even the volvo dealer.

I have a problem with my s60 d5 euro 3. When I revving the engine when parked revvs are going up. quite slow. Same when I driving there is nothing happen until 2k rpm then turbo start kick. There is new turbo installed and cat back system + car is fitter with rica stage 2 ecm software. I'm sure i have a leak somewhere. Thanks

Hi i wonder if you can help. I have a popoing noise but it goes so far as the intercool pipe as well. I will really appreciate if you can.

Hi Sirob, I’m a new owner of a xc90 2004, For some reason the previous owner has removed the T junction and pipe from the TBV do you know the part numbers for them?

any idea if the vacuum pressure of a diesel D5244 engine is the same as a Benzin B5244 engine?

Hi Simon, does the E3 engine have a dpf?

Could the brake booster cause a vacuum leak and then cause the pooping sound

Si tapo con el dedo directamente desde la salida de la bomba , deberia de dejar de hacer el ruido si la bomba de vacio esta en buen estado?

Hi where is vacuum mounts on D5 euro D524410

Va rog,puteți să-mi trimiteți o schemă cum se monteaza toate furtunele de vaccum.Leam dat jos ,erau pline de ulei și nu nai știu sa le pun la loc

Buongiorno a tutti, ho un problemino alla mia Volvo v70 163 Cv del 2003. In pratica solamente con la 4 e 5 marcia non supera i 2500 giri e va in recovery.( Assistenza urgente motore). Inoltre è come se facesse un giro di troppo per accendersi. A qualcuno è capitato? In settimana la porterò in officina.

PLEASE HELP!!!

Peefect