V50 Engine 2.0D : - 2.0 D - hissing noise kicking in @ 3K revs.

Mwaite1985 · Jul 11th, 2011, 12:36

Hi all,

I seem to have an issue with my Volvo V50. I have noticed when the car is getting to around the 2.8K-3K the cars seem's to make a blow-off noise and feel flat.

The turbo is kicking as normal, no boost issue, bar this issue when it seems to make the above noise (in all gears) the car seem's to be a bit laggy & hesitant low down in the revs (shudders at certain points)

Has anyone experience this before? I am going to check the intake system tonight a long with the exhaust for any leaks.

Thanks,

Matt

PhiljClay · Jul 11th, 2011, 13:18

I,ve had the same with mine, smoke tested the turbo system and all is fine. If you find out what it is let me know, cheers.

Clan · Jul 11th, 2011, 13:20

One of the boost pipes or intercooler leaking i would think ...

Mwaite1985 · Jul 11th, 2011, 14:54

How easy is it to access the I/C?

No smoke being thrown out, run's clean as a whistle.

thanks guys, will be looking in to it later on.

Matt

Clan · Jul 11th, 2011, 16:42

fairly easy , you have to take the bumper cover off ...

fenton_jd · Jul 12th, 2011, 23:19

Mine did this. Under hard acceleration you hear a whistle mid-way through. It was a loose screw on the intake manifold.

Look at the front of the engine, the intercooler hoses (left and right) join the centre section of the engine via a "Y" shaped plastic bit.

There are three Torx 25 screws that bold the Y connector black plastic section ontop of the engine.

The 3rd screw is underneath the pipes, and this needs tightening up (NOT TOO TIGHT though). There was a slight oily film on and around the screw, whereas the other two screws were clean.

Bit tricky to get the screwdriver in there. I ended up using a socket wrench and connecting the torx 25 bit to it via a 2 socket reducers.

Jul 11th, 2011, 12:36	#1
Mwaite1985 Junior Member Last Online: Oct 10th, 2023 15:18 Join Date: Nov 2010 Location: Chester	2.0 D - hissing noise kicking in @ 3K revs. Hi all, I seem to have an issue with my Volvo V50. I have noticed when the car is getting to around the 2.8K-3K the cars seem's to make a blow-off noise and feel flat. The turbo is kicking as normal, no boost issue, bar this issue when it seems to make the above noise (in all gears) the car seem's to be a bit laggy & hesitant low down in the revs (shudders at certain points) Has anyone experience this before? I am going to check the intake system tonight a long with the exhaust for any leaks. Thanks, Matt

Jul 11th, 2011, 13:20	#3
Clan Experienced Member Last Online: Yesterday 22:32 Join Date: Jun 2007 Location: L/H side	One of the boost pipes or intercooler leaking i would think ... __________________ My comments are only based on my opinions and vast experience .

Jul 11th, 2011, 16:42	#5
Clan Experienced Member Last Online: Yesterday 22:32 Join Date: Jun 2007 Location: L/H side	fairly easy , you have to take the bumper cover off ... __________________ My comments are only based on my opinions and vast experience .

Jul 11th, 2011, 13:18	#2
PhiljClay Junior Member Last Online: Jul 19th, 2012 09:41 Join Date: Dec 2010 Location: Leeds	I,ve had the same with mine, smoke tested the turbo system and all is fine. If you find out what it is let me know, cheers.

Jul 11th, 2011, 14:54	#4
Mwaite1985 Junior Member Last Online: Oct 10th, 2023 15:18 Join Date: Nov 2010 Location: Chester	How easy is it to access the I/C? No smoke being thrown out, run's clean as a whistle. thanks guys, will be looking in to it later on. Matt

Jul 12th, 2011, 23:19	#6
fenton_jd turkeyspace.com Last Online: Nov 5th, 2016 16:41 Join Date: Apr 2009 Location: Gloucester	Mine did this. Under hard acceleration you hear a whistle mid-way through. It was a loose screw on the intake manifold. Look at the front of the engine, the intercooler hoses (left and right) join the centre section of the engine via a "Y" shaped plastic bit. There are three Torx 25 screws that bold the Y connector black plastic section ontop of the engine. The 3rd screw is underneath the pipes, and this needs tightening up (NOT TOO TIGHT though). There was a slight oily film on and around the screw, whereas the other two screws were clean. Bit tricky to get the screwdriver in there. I ended up using a socket wrench and connecting the torx 25 bit to it via a 2 socket reducers.

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