Volvo S70 Made from 1998 to 2000, this sporty model replaced the 850 sedan and instantly became a hit.

Volvo s70 weird noise under the Hood

  #1  
Old 10-03-2016, 10:18 AM
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Default Volvo s70 weird noise under the Hood

My car is a 1998 n-Turbo,the car runs fine,no codes,but I am having this issue.
when idling or driving slow and not on the Gas pedal,there is noise coming under the hood a whistling type of noise,as soon as I press the gas Pedal the noise goes away,it is not coming from the serpentine belt,for certain it is closer to the driver side where the canister is or that module that,s connected to the throttle body,not sure what it is called.

Anyone have a clue?
 
  #2  
Old 10-03-2016, 02:53 PM
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does it change when you pull out the dip stick or remove the oil fill cap? Google "volvo s70 vent box" for some similar posts. Also could be vacuum or intake leaks...
 
  #3  
Old 10-03-2016, 03:49 PM
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Thanks will give it a try when I get home.
 
  #4  
Old 10-04-2016, 02:49 PM
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Default Humming Noise

Originally Posted by mt6127 View Post
does it change when you pull out the dip stick or remove the oil fill cap? Google "volvo s70 vent box" for some similar posts. Also could be vacuum or intake leaks...
Unfortunately,whether I remove the dipstick or Oil Cap,the Noise is still there,but there is Pressure for certain,only little Fume come out of the dipstick not a lot
 
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