http://www.fcpeuro.com/BMW-parts/ ▻ We’re back with Ben McNally to walk you through a PCV system and intake manifold gasket replacement on a 1996 Volvo 850 T…
Volvo PCV Breather System Replacement (850 Turbo) FCP Euro
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You’ll want to check the crankcase vacuum at the oil dipstick to see where if you have negative or positive pressures after the replacement.
Practical information! Thank you. I replaced the flame trap along with the PCV box. Do I need to check anything else?
To lift of the fuelpressure, use the valve in the edge of the fuelrail. It’s like a valve on a tire. Thats makes you have control the fuel spillage.
Good job dude.
It does, thank you very much!
You can try our friends over at Matthews Volvo Site, they’re always quite helpful locating that kind of thing.
OK, thanks. Is there a decent website to get a vacuum tube diagram in case I made a bad connection?
You’ll want to check for vacuum leaks and maybe clean the throttle. Also, disconnect your battery for about an hour to reset the adaptives. Hope that helps.
The EGR valve doesn’t have to be removed however you’ll have to remove the line to the valve. As far as testing the valve its best to remove it and apply vacuum to the diaphragm. At this time you can inspect for carbon blockage and clean as necessary. Hope that helps!
Just went through the process over the weekend on my ’95 Volvo 850. It went fine. However, now the car idles a bit rough but otherwise runs fine. Any ideas?
What chemical spray would you use to clean the oil pan?
Does the EGR Valve have to be removed on a 94 850 Turbo in order to remove the intake manifold? Either way, do you recommend I clean the EGR Valve during the PCV repair? Also, how do you know if you have a clogged or faulty EGR Valve? Thanks FCP!!!!
Great video mate,
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hey fcp i have a 96 volvo 850 w/o turbo and i have white color smoke coming out of my engine ?? please help me figure this out could it be blown? head or i need new seals? or may it be a bad coolant system?
Best automotive instructional video I have ever seen. Thanks.
We’ve added it to our list!
You should had drop the oil pan and clean out the square passageway inside the engine block and oil pan. I done the shortcut once by skipping the procedure once before by not cleaning it up and I hade to do the whole PVC cleaning again but this time I drop the pan. Boy was it clogged up…
Can you guys do the same on a 04 XC70?
The EGR Valve does not have to be removed as it bolts closer to the intake manifold not the exhaust manifold on this vehicle. You may have to loosen the EGR piping however. Hope that helps.
Jeez…and I thought changing the timing belt was a complicated process.
Great video FCP. Will be attempting this shortly. Quick question for you guys. Does a 95′ 20 valve non-turbo 850 have an egr valve? If so, does it have to be removed to get the manifold off? Thanks for your time.
It sounds like a vacuum leak to me, don’t touch your wastegate hinge. There are many vacuum connections in this engine bay and it could be anything from a PCV system leak to a torn intercooler plumbing coupler. I recommend taking it to the Volvo dealer or Volvo specialist if you don’t feel comfortable troubleshooting this yourself.
A quart a day is a lot of oil to be losing from the dipstick. But it’s a small fairly easy seal to replace. It might be worth trying then seeing where you stand.
Do you believe a clogged PCV will cause me to leak oil? I am leaking oil real bad and it looks like I’m leaking from under the radiator but it’s just dripping from there. I can’t locate where the leak is actually coming from, I checked the connections to the radiator and it’s not leaking from there. The only place I can logically think of is from the dip stick. I am losing a lot of oil, like a quart a day. If you can give me some insight I would highly appreciate it!
Do you believe a clogged PCV will cause me to leak oil? I am leaking oil real bad and it looks like I’m leaking from under the radiator but it’s just dripping from there. I can’t locate where the leak is actually coming from, I checked the connections to the radiator and it’s not leaking from there. The only place I can logically think of is from the dip stick. I am losing a lot of oil, like a quart a day. If you can give me some insight I would highly appreciate it!
Thanks for this. On the XC70, it was a difficult job, but I got through it successfully thanks to this video. (I wouldn’t have tried it otherwise.) Your PCV kit was fantastic. Only suggestion I have would be to include standard screw-in hose clamps instead of the one-time use clamps. I found it easier to get the manifold back on using standard clamps, and without the right tool, the pinch clamps seem a bit risky. Keep up the great kits and videos!
You’ll want to email our Volvo Master Tech Jason at jason.vangorden@fcpgroton(dot)com He’ll be able to help you out.
We haven’t filmed the same repair on an S60 yet, but you can use this video to guide you through most the steps. Just take your time and give us a call if you have any questions along the way. 1-877-634-0063 You can replace just the upper hose, but since you have to thread it under the intake manifold to the valve, you might as well replace the other parts too. Hope that helps.
There certainly is, and smoke could definitely be indicative of a faulty valve. We show how to replace it in the video. Hope it helps.
I have an upper PCV hose cracked and leaking some oil on the top of the engine (where the sparkpugs are) on my 2005 Volvo s60 2.5T, and i was told abourt 2 years ago that my “breather box” needs replacing/cleaning. can you post some instructions with parts required to conduct the repairs? What happens if i just replace the upper PCV hose? Thanks!
after watching this vid..didnt even think twice,i subd immediately!!! great video
Is there a PCV Valve on this system? We just looked at my buddy’s 850 and he has a little smoke coming out the oil dipstick. Should we start with the valve?
What would make a turbo bog down upon acceleration….let’s say around 3000 rpm’s at about 70 miles per hour. I’ve changed the pcv and don’t know what else to do. What is a wastegate,where is it, and some one told me to tap on it with a hammer…….HELP ME PLEASE 🙁
thank you BDM
The PCV system is usually a breather tube and a PCV valve. The tube connects the crankcase to a clean source of fresh air that flows into the engine after passing through some sort of screen to stop any flame fronts. Inside the engine air circulates clearing away combustion gases that exit through another screen to trap oil droplets before being drawn out through the PCV valve, and into the intake manifold. It’s essentially a way for gases to escape in a controlled manner from the crankcase.
Thanks Ben, my dad just gave me his old volvo 850. Really nice car and has all the features amodern car has. Trying to get my head round the my new car. What is a PCV breather system and what does it do?
A vacuum leak on any car can be a cause of poor fuel mileage, erratic idle or a slew of other characteristics.
would a broken vacuum line from the intake make my volvo 850 idle high?
There are some differences nothing major though. Different intake manifolds, throttles, vacuum and breather line routings. Hope that helps!
You could have a clogged oil drain passage to the block or a sliced/loose hose. Or it’s possible you could have installed a faulty vacuum valve that could be faulty. Hope that helps.
what are the significant differences to look out for on a 2000 S80?
This is very helpful. My 98 C70 HPT has neutral PCV vacuum and the PCV system has been replaced only 6k miles ago.. any tips for why I wouldnt have negative vacuum as expected?
We didn’t leave anything out of the video, but of course some years will vary slightly. Glad you ended up getting everything replaced ok.
Sigh….I used this video as a guide to do my PCV system and into my car (95′ 850T wagon) as far as lifting the intake manifold then – wait a minute, what the hell is this carbuncle hanging off the bottom of the manifold? I discover that it’s part of the EGR system!!! Hmm, interesting. No mention of that in the video. Wish I had more space to describe what a gigantic cluster the project turned into. Thanks FCP!