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Boost surge ?? , or is my bov to small

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

Volvoc7025t
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Year and Model: 1999 c70
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Volvoc7025t

Boost surge ?? , or is my bov to small

Post by Volvoc7025t » Sat Jun 13, 2020 1:29 pm

Hi all

Please I am needing some help , I've been working on my vovlo c70 99 coupe 2.5 t got everything running well except for when I go full throttle and let off at 4500 rpm its feels like theres a boost surge where the car wants to die , I'm wondering if my bov is wrong it's not a great brand , just need to know what's happening .

scot850
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Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
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scot850

Re: Boost surge ?? , or is my bov to small

Post by scot850 » Sat Jun 13, 2020 11:19 pm

What work have you done on your car? It will help us to advise better if we know what you have replaced on the engine and ideally brands of parts.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

Volvoc7025t
Posts: 16
Joined: Mon Jan 29, 2018 11:24 am
Year and Model: 1999 c70
Location: Durban
Has thanked: 0
Been thanked: 0
South Africa
Volvoc7025t

Re: Boost surge ?? , or is my bov to small

Post by Volvoc7025t » Sun Jun 14, 2020 10:55 am

Nothing the car is bone stock only thing is the bov after the intercooler , I'm wanting to get it running perfectly before I decided to any major upgrades I did pull the head off about 6 months ago to do valve stem seals and got the the hydraulic lifts reset , and I changed the turbo cartridge, that's all I've done
Last edited by Volvoc7025t on Sun Jun 14, 2020 10:57 am, edited 1 time in total.

Volvoc7025t
Posts: 16
Joined: Mon Jan 29, 2018 11:24 am
Year and Model: 1999 c70
Location: Durban
Has thanked: 0
Been thanked: 0
South Africa
Volvoc7025t

Re: Boost surge ?? , or is my bov to small

Post by Volvoc7025t » Sun Jun 14, 2020 10:56 am

Will check brand off bov though

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