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.

Fluctuating power and black smoke

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Old Mar 26, 2009 | 10:20 AM
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Default Fluctuating power and black smoke

Any idea as to what could be causing this black smoke and lower power than usual? When this happens the tach fluctuates. I changed my EGR valve a few months ago. Could it be a hose or something?
 
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Old Mar 26, 2009 | 07:37 PM
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Any codes stored?
Sounds like it might be misfiring.
 
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Old Mar 26, 2009 | 10:30 PM
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I got a 4-5-5 Code misfire cyl #5
 
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Old Mar 27, 2009 | 07:06 PM
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Not sure what year it is but if it is a 98 it might need a full tune up.
If it is a 99 it might needs spark plugs or a coil.
 
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Old Mar 31, 2009 | 02:44 PM
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I changed the air mass meter and the problem went
 
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