volvo S70 turbo question

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.
1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70
desolator
Posts: 20
Joined: Sat Jan 08, 2011 10:55 am
Year and Model: 1999
Location: USA, MI

volvo S70 turbo question

Postby desolator » Thu Jan 13, 2011 11:00 pm

Could bad Turbo cause high engine pressure and make smoke coming from dipstick and engine cap?

brady55
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Year and Model: 1996
Location: ATL

Re: volvo S70 turbo question

Postby brady55 » Thu Jan 13, 2011 11:24 pm

no that is your pcv system that is clogged. FYI see the 140k main thread on the main page 4th one from the top for the repair

Ozark Lee
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Re: volvo S70 turbo question

Postby Ozark Lee » Thu Jan 13, 2011 11:34 pm

Welcome to MVS,

Normally the turbo itself will not but some items associated with the turbo can. You have the classic symptoms of a clogged PCV "system". I say system because it is quite elaborate and it involves an oil trap and numerous hoses. The intake manifold needs to come off of the car to service it but we have a good writeup on how to perform the service pinned at the top of the page.

viewtopic.php?f=1&t=28487

It is about a 2 1/2 wrencher as projects go but the parts for a "Kit" are not that much (a fuzz over $100.00) from either IPD or FCP Groton.

You might get lucky and just have a plugged up PTC valve but, depending on your mileage and what you have for service records it might be best just to replace everything and be done with it for another 100k miles. A plugged PCV can cause other damage as well - the biggest in terms of cost is that it can blow the rear main seal which requires that at least the transmission and the flywheel need to come out to replace a $20.00 part.

The moral of the story is to deal with it sooner rather than later.

Edit: Like brady55 said. :D

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
'98 S70 T5
'99 V70XC - RIP - Wrecked Parts Car.
'99 V70XC - Nautic Blue
Previous:
'96 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

desolator
Posts: 20
Joined: Sat Jan 08, 2011 10:55 am
Year and Model: 1999
Location: USA, MI

Re: volvo S70 turbo question

Postby desolator » Thu Jan 13, 2011 11:51 pm

Hi thank you for fast responds , But I cleaned the PCV and replaced the Trap , EGR, but i still got the same problem.
I went today to a mechanic and he told me it's my turbo, could it be the turbo?

Ozark Lee
MVS Moderator
Posts: 14133
Joined: Thu Sep 07, 2006 2:24 pm
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Re: volvo S70 turbo question

Postby Ozark Lee » Fri Jan 14, 2011 1:57 am

Describe how you "cleaned the PCV" and we can give you a better answer. About the only thing that can be reliably cleaned on the PCV is the PTC valve and the oil line out of the front of the block. As for the rest of the system it just needs to be replaced.

Short of the turbo completely seizing up and creating massive back pressure and thus massive blow by on the rings, I'm not buying the problem being the turbo but then again I can't see your car.

When you drive it can you hear the turbo spool up when you accelerate?

Other than the leaks and vapor from the dipstick, how does the car run?

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
'98 S70 T5
'99 V70XC - RIP - Wrecked Parts Car.
'99 V70XC - Nautic Blue
Previous:
'96 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

desolator
Posts: 20
Joined: Sat Jan 08, 2011 10:55 am
Year and Model: 1999
Location: USA, MI

Re: volvo S70 turbo question

Postby desolator » Fri Jan 14, 2011 2:17 am

Ozark Lee wrote:Describe how you "cleaned the PCV" and we can give you a better answer. About the only thing that can be reliably cleaned on the PCV is the PTC valve and the oil line out of the front of the block. As for the rest of the system it just needs to be replaced.

Short of the turbo completely seizing up and creating massive back pressure and thus massive blow by on the rings, I'm not buying the problem being the turbo but then again I can't see your car.

When you drive it can you hear the turbo spool up when you accelerate?

Other than the leaks and vapor from the dipstick, how does the car run?

...Lee

I cleaned the same as in the Website saying, Replaced the PCV Trap and the hole in the back of the trap and checked the PCV lines if they are open , I used gas to make sure if to remove and clogged oil in the lines, and i cleaned the PTC with Gas and the nipples too.
The car is making big cloud of smoke after 30 minutes of driving but not while I'm driving it, it happen only in traffic light you know only when the car on idle, the smoke smell stink and when that happen the car looks like not responding you know like it's misfiring or something with some shake in the engine.
no oil leak from the turbo but i was leaking before from the oil back line but i fixed it before a while.
And no i can't head the turbo and never heard my turbo before.

Ozark Lee
MVS Moderator
Posts: 14133
Joined: Thu Sep 07, 2006 2:24 pm
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Re: volvo S70 turbo question

Postby Ozark Lee » Fri Jan 14, 2011 11:51 am

The car is making big cloud of smoke after 30 minutes of driving but not while I'm driving it, it happen only in traffic light you know only when the car on idle, the smoke smell stink and when that happen the car looks like not responding you know like it's misfiring or something with some shake in the engine.
no oil leak from the turbo but i was leaking before from the oil back line but i fixed it before a while.
And no i can't head the turbo and never heard my turbo before.


I'm starting to get confused. Where is the smoke coming from when you pull up to the traffic light? Under the hood or out the tailpipe?

Which version of the turbo do you have? The 2.3 liter High Pressure turbo or the 2.4 liter Low Pressure turbo?

On my high pressure turbos I can definitely hear the turbo spool up (it sounds like a low level whistle) when I get into the accelerator but with the low pressure turbo I don't know - I've never driven one.

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
'98 S70 T5
'99 V70XC - RIP - Wrecked Parts Car.
'99 V70XC - Nautic Blue
Previous:
'96 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

desolator
Posts: 20
Joined: Sat Jan 08, 2011 10:55 am
Year and Model: 1999
Location: USA, MI

Re: volvo S70 turbo question

Postby desolator » Fri Jan 14, 2011 10:42 pm

Ozark Lee wrote:
The car is making big cloud of smoke after 30 minutes of driving but not while I'm driving it, it happen only in traffic light you know only when the car on idle, the smoke smell stink and when that happen the car looks like not responding you know like it's misfiring or something with some shake in the engine.
no oil leak from the turbo but i was leaking before from the oil back line but i fixed it before a while.
And no i can't head the turbo and never heard my turbo before.


I'm starting to get confused. Where is the smoke coming from when you pull up to the traffic light? Under the hood or out the tailpipe?

Which version of the turbo do you have? The 2.3 liter High Pressure turbo or the 2.4 liter Low Pressure turbo?

On my high pressure turbos I can definitely hear the turbo spool up (it sounds like a low level whistle) when I get into the accelerator but with the low pressure turbo I don't know - I've never driven one.

...Lee


it's coming from the tailpipe nothing coming from under the hood unless i pull the dipstick, Mine is 2.4 GLT I think it's low pressure turbo.
I think i heard it today when i pressed the gas.
Please help me i really need to fix it.

Ozark Lee
MVS Moderator
Posts: 14133
Joined: Thu Sep 07, 2006 2:24 pm
Year and Model: Many Volvos
Location: USA Midwest
Flag: United States of America

Re: volvo S70 turbo question

Postby Ozark Lee » Fri Jan 14, 2011 11:24 pm

It may well be the turbo if the inner oil seals are leaking. If they leak the car starts to pump oil into the exhaust system and after the exhaust (particularly the catalytic converter) gets hot the oil will start to burn off and smoke.

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
'98 S70 T5
'99 V70XC - RIP - Wrecked Parts Car.
'99 V70XC - Nautic Blue
Previous:
'96 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

desolator
Posts: 20
Joined: Sat Jan 08, 2011 10:55 am
Year and Model: 1999
Location: USA, MI

Re: volvo S70 turbo question

Postby desolator » Sat Jan 15, 2011 12:15 am

Ozark Lee wrote:It may well be the turbo if the inner oil seals are leaking. If they leak the car starts to pump oil into the exhaust system and after the exhaust (particularly the catalytic converter) gets hot the oil will start to burn off and smoke.

...Lee

It was leaking from the back line but i did replace the seals, do you think the engine pressure could be because of a bad turbo?


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