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Fuel pressure regulator question....99 volvo v70xc

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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Re: Fuel pressure regulator question....99 volvo v70xc

Post by abscate » Sun Apr 14, 2019 1:08 am

I think the last pic is the rollover valve, not an Intake air control valve. That’s seals up the Evap system in case you roll the car over like June does every once In a while. If the hoses on it are fat, like 1 cm thick, that’s Evap. A leak there, or a split can make a hissing noise , too.

Non turbo cars in 99 have an iac. Turbo cars in 99 do not, it’s built into the electronic throttle body system ( ETB, ETM, or ETS are all used to describe that)

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Re: Fuel pressure regulator question....99 volvo v70xc

Post by V70xc1999 » Sun Apr 14, 2019 6:50 am

Thanks.....its not comming from the hose.....it was comming from where the 2 parts join..there is only one vacume hose and 3 fuel lines that conect to... all are good.so i took apart resealed and gonna put it back in today....I will see.....there should be no air comming from or being sucked in correct...

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