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1997 V70 loss of power; no acceleration possible.

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

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RickHaleParker
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Re: 1997 V70 loss of power; no acceleration possible.

Post by RickHaleParker » Mon Jan 27, 2020 10:30 am

Empigt wrote: ↑
Mon Jan 27, 2020 9:54 am
You say I destroyed a catilitic converter that "can't be clogged" by clogging it up.... Some people!
You are attempting to put words in my mouth. I never saying a Catalytic Converter cannot be clogged. If I did, I certainly would not of instructed him on how to determine if it is a clogged Catalytic Converter.

Clogging is not a normal function of a Catalytic Converter. Clogging comes from somebody committing an act of omission or commission.

You can keep trying to pull the wool over people's eyes. Doing so will only reflect on you. The proof to debunk you are saying about me is right here in plain sight.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

Empigt
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Re: 1997 V70 loss of power; no acceleration possible.

Post by Empigt » Tue Jan 28, 2020 5:58 pm

RickHaleParker wrote: ↑
Mon Jan 27, 2020 10:30 am
Empigt wrote: ↑
Mon Jan 27, 2020 9:54 am
You say I destroyed a catilitic converter that "can't be clogged" by clogging it up.... Some people!
You are attempting to put words in my mouth. I never saying a Catalytic Converter cannot be clogged. If I did, I certainly would not of instructed him on how to determine if it is a clogged Catalytic Converter.

Clogging is not a normal function of a Catalytic Converter. Clogging comes from somebody committing an act of omission or commission.

You can keep trying to pull the wool over people's eyes. Doing so will only reflect on you. The proof to debunk you are saying about me is right here in plain sight.
It wasn't you that said that they never clog up but it seemed you defended someone that did say that. As far as debunking my words go ahead. I was the first to answer this guys problem and was correct. Others that posted they don't clog up are wrong. So what are you trying to debunk? If the original poster took their advice his car would still be running like shit.

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misha
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Year and Model: '97 850 2.5 20v
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Re: 1997 V70 loss of power; no acceleration possible.

Post by misha » Tue Jan 28, 2020 6:19 pm

I said that i had never seen clogged cat on these cars.
And i didn't.
Mine is still original and engine burns 1l of oil around 2-3k km,due to old valve stem seals.

When i said that it can't be clogged i meant that Volvo cat can't be clogged by separating of internal parts and blocking the exhaust flow...like ceramic ones.

If it gets clogged with oil when engine burns a lot of oil,you can clean it with special solvents and continue to use it.
After cleaning It will work just like a brand new one.

BUT if you don't fix the engine or turbo and continue to burn a lot of oil...10 new cats will not help.

Also...30min drive in high rpm once a month will keep the cat in good shape for a looong time.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

Empigt
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Re: 1997 V70 loss of power; no acceleration possible.

Post by Empigt » Tue Jan 28, 2020 6:27 pm

Oh ok. That makes since now. Sorry I was confused by earlier wording.

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RickHaleParker
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Re: 1997 V70 loss of power; no acceleration possible.

Post by RickHaleParker » Wed Jan 29, 2020 1:18 am

giovannibianco wrote: ↑
Mon Jan 27, 2020 7:46 am
Hello Everyone,

Update on the "blue bomber"... our '97 V70 20v. I changed the cat and exhaust last week and have made 100km-ish
worth of tests. She's back to life better than ever! Pulls like a train and revs far better than before. Even no more engine light! We've had this car for seven(?) years or so and I've always had a feeling that she's always been a bit "woolier" than our '94 850 (2.5 10v) that feels far zippier with more bottom end torque.
It sounds like the '97 V70 has a 2.3L with a High Pressure turbo (HPT) and the '94 850 has a 2.5 with a Low Pressure Turbo (LPT).

A LPT spins up quicker in the lower RPM range where torque is more prevalent the power. That is why a LPT produces more low end bottom end torque then a HPT. LPT is better for city driving and fuel economy.

A HPT spins up slower but when it does it produces more boost in the higher RPM range where power is more prevalent then torque. A HPT is slow to turn on but when it does it does so with a vengeance.

Keep it tuned up and no procrastination the next time your wife tells you it is not running right. I suspect the engine not running right is what clogged up the Catalytic converter.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

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