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Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

What would make this buzz?

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Old Feb 19, 2014 | 11:36 PM
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Phil 850's Avatar
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From: Sonoma County, California
Default What would make this buzz?
What would make this buzz? I know that it is the EGR pressure control valve so is the problem in this or something that is sending a signal to it? Mine is making a lot of noise and it started just after I took it in for a smog check.
 
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Old Feb 20, 2014 | 11:16 PM
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Probably gone bad.
 
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Old Feb 21, 2014 | 07:32 PM
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Originally Posted by rspi
Probably gone bad.
That's what I was afraid of, they are expensive.
 
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