Ok. Another source of issues eliminated then.
SOLD - 2004 Volvo V70R GT/Titanium Gray/Gobi - 103000 Miles, Bilstein B6 Front, Resonator delete, do88 Intake, do88 Lower Intercooler pipe, Forge CBV with green spring, Grey Pierburg TCV, Viva Strut Bar Conversion Kit, 17'Pegasus, 235/45/17 Goodyear Eagle F1 AS3
Basically, Unmetered air (after the MAF) has not been processed by the ECM. The ECM is 'expecting' a value of X but is presented with Y by the O2 sensor. Therefore, the ECM stores an O2 fault code because it has not been given the correct 'Expected' value.
So YOU think...."Ah, my O2 sensor is f@@ked"..... when in actual fact, it's not. You just have an air leak.
It's not just the fault code you get, but precisely what it says! You could still have an O2 sensor fault code, for example, that might say....."O2 sensor (bank 1, sensor 1) short to B+"..... In that example, yes, you may well have a knackered O2 sensor. You would need to corroborate that with live readings to see if that sensor was actually reading a voltage and if it was reacting when you accelerate. If the voltage stays still then it backs up the fault code and you replace the sensor. Get it??
Jesus that was hard to explain but I think i got it right.
Last edited by LeeT5; Thursday 14th April 2016 at 20:31.
2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights
expolicev70t5 (Friday 15th April 2016)
Back on the issue of the plume of burnt oil smoke. Just been reading an old thread and it threw up another thought on the burnt oil after overrun, I may be barking up the wrong tree but its just a thought, on the thread I read about the grade of oil used, I have always used W5-30 Magnatec on my car after reading some sales info from Volvo a number of years ago stating that was the grade to use, however I noted on the thread that I think the person who had written the thread had been using a particular grade of oil and Tim Williams advised him in the thread that this would cause engine issues. Following that I read some other threads that suggested using a W10-30 grade oil what are your thoughts?
Ex Police V70 T5 SE now scrapped.
Daily driver V60 D3 R-design
2004 C70 2.4T GT, modifications front strut brace, 19" Peg reps with white lettered tires.
If you are due a oil change try 10w40 .
I've used 10-40 Valvoline Max Life in my S60 2.0T. 8k miles service interval from 120k miles till I sold it at 193K miles. Never had any issues, never had to to up. The Max life is developed for engines over 100k Km. It's a blended oil. Before the Valvoline, Castrol and Mobil. Both required to up before the end of the service interval.
http://valvoline-eu.lubricantadvisor....aspx?lang=eng
SOLD - 2004 Volvo V70R GT/Titanium Gray/Gobi - 103000 Miles, Bilstein B6 Front, Resonator delete, do88 Intake, do88 Lower Intercooler pipe, Forge CBV with green spring, Grey Pierburg TCV, Viva Strut Bar Conversion Kit, 17'Pegasus, 235/45/17 Goodyear Eagle F1 AS3
I just bought 12 litres of Shell Helix Ultra 5w-40 from Opie oils for £50
I currently use Castrol EDGE Titanium FST 0W-30 but fancy a change. I'll be flushing out the engine on the next change too.
2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights
I had very similar issues to this on my 02 s60 t5 but with higher consumption of a litre in 600- 1000 miles on a good day and only with 90k on the clock. PCV replaced and sump removed to clean the little port which drops down into it which often blocks, turbo reconditioned, however still used a lot of oil yet never smoked on start up or driving really, only really when running down hills. In the end decided to bite the bullet and strip the engine and in doing so I replaced my valvestem seals and reground my valves but sadly found my bores were extremely worn and have lost all of the honing marks. Couldn't afford to rebuild the bottom end so rebuilt the engine and it has made little difference so my problem it seems is rings. I really hope your problem isn't this as valvestem seals are much easier and cheaper to do.
I would suggest doing what the other guys have suggested, take the PCV system apart and clean it or replace it paying special attention to the lower drain port that turns 90 degrees and drops into the sump (it's only about 1cm square once inside) and do a compression test if you haven't already and go from there. Good luck
Years ago I made a little video as it hardly smoked but used loads of oil. This is all the smoking I got revving up after idling other than whiter steam when cold but turned out to be rings of this helps. I now a few years later can see some smoke when driving but only foot to the floor at high revs and only really noticeable in the dark in the lights of another car following. It is very subtle for the amount of oil being lost
Last edited by Bigsi15; Thursday 21st April 2016 at 02:47.
expolicev70t5 (Thursday 21st April 2016)
Hate to say it but that video shows nothing other than excess fuel being burnt or unburnt. Excess fuel always exits the exhaust as a thin dark cloud. If it were burning oil then it would be a blueish/light grey cloud of smoke.
In my professional opinion it does not look to me like your car is burning oil in that video.
Also, the car was not under load, therefore, you're unlikely to see burning oil IF it has a burning oil issue!
Last edited by LeeT5; Tuesday 10th May 2016 at 16:11.
2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights
OP, may I suggest that you inspect the PCV hose at the Intake pipe end. Check to make sure that the Intake hose PCV nipple is not blocked and/or that there is not excessive accumulation of oil in that area.
When replacing the PCV pipework properly, not cleaning (which does not work and is ill effective), it is necessary to remove and inspect the MAF to turbo hose. You need to check that the turbo end is not brittle or cracked, if so, fit a new hose as it will leak at the turbo end and cause MAF/Air leak related fault codes. You will not be able to check to see if the PCV pipe is blocked as it will be too brittle to bend or try to shove anything inside.
Note
If ALL the PCV pipework and related parts are not replaced when carrying out a PCV change, then it will affect the running of the car and of course this includes the crankcase breathing system. A partially blocked or fully blocked PCV will make the car idle poorly, consume more oil than is normal, contaminate the MAF with oil vapor and generally lead to an engine that doesn't flow or breath as it should. M.E.7.0.1 is very clever at masking issues because of it's ability to adapt. it will therefore often mask other underlying issues.
The biggest single enhancement I noticed to my engine, once I'd replaced all the PCV components, was the exhaust note!! It was noticeably different and seemed more throaty. Now some will argue there may be a placebo affect going on here, but none the less, the PCV system is often overlooked and easily misdiagnosed as they're are so many parts to it. This is why Volvo include replacing the PCV at a particular mileage interval on the service schedule.
2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights
expolicev70t5 (Tuesday 10th May 2016)
Is your car mapped??
2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights
Hi Lee,
No cars not mapped as I have held off from mapping it until all issues are resolved.
Ex Police V70 T5 SE now scrapped.
Daily driver V60 D3 R-design
2004 C70 2.4T GT, modifications front strut brace, 19" Peg reps with white lettered tires.
The intake pipe is ok as it is an alloy and silicone set up (GWE) so no splits or cracking there.
Car has now been stood for 2 weeks as I now have the C70 Cabriolet to use whilst I get the V70 sorted, at the weekend I started it up for the first time in 2 weeks and ran it until thoroughly warmed through before moving it into my spare garage which I had cleared out, started but ran rough on 4 pots and gave a rather large plum of blue/ white burnt oil smoke, after a moment or so it settled down and ran smoothly and no further smoke.
I'm guessing from my limited knowledge that must have been oil seepage through the valve stem oil seals into the chambers. I will get round to doing a compression test to see if its just valve issues or whether rings are also worn.
Ex Police V70 T5 SE now scrapped.
Daily driver V60 D3 R-design
2004 C70 2.4T GT, modifications front strut brace, 19" Peg reps with white lettered tires.
Interestingly, I asked Murray Volvo in Edinburgh for a quote for the 100k service plus replacing my PCV system. Not only did they want a stupid amount for the service (but hey, we wash the car too!) But they quoted 30 quid for the PCV as "typically they just need to be cleaned out".
I declined their offer. Confidence lost.
2001 V70 T5 (Manual) - The Turnip
1999 9-5 Aero (Manual) - Sven
Doingitsideways (Tuesday 10th May 2016)
expolicev70t5 (Tuesday 10th May 2016),Orca2 (Tuesday 10th May 2016)
If it clears pretty quickly after being laid up for a while without actually driving it , it sounds very like valve stem seals, the oil that has seeped in while it was standing idle will give you a rough start
expolicev70t5 (Wednesday 11th May 2016),kmb (Wednesday 11th May 2016)
After owning Volvos for about 30yrs Volvo seemed to only recommend 5W 30 oil when they started using the VVT system ?
Before that they only said 10W 40 so i always used the thicker oil. Of course earlier T5`s no VVT.
The thicker oil is no friend to the VVT system and can over time make it malfunction.
Mercedes C320CDI Sport Estate 3 litre V6 7 Gear Auto
Remap 290bhp 628Nm torque @ 1600revs 45.1mpg
expolicev70t5 (Wednesday 11th May 2016)
Ex Police V70 T5 SE now scrapped.
Daily driver V60 D3 R-design
2004 C70 2.4T GT, modifications front strut brace, 19" Peg reps with white lettered tires.
2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights
expolicev70t5 (Wednesday 11th May 2016)
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