po172-system to rich 850 turbo - Volvo Forums - Volvo Enthusiast Forum - Volvo Community - Volvo Repair
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post #1 of 3 (permalink) Old 04-28-2010 Thread Starter
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po172-system to rich 850 turbo

I've got a 96 850 turbo,lots of miles(odometer was broke when i bought it).If I run it for awhile , shut it off then restart,engine runs rough like its loading up or chocking out.Code comes up po172.I,ve changed both o2 sensors ,did'nt help.Also cranking over alot before it starts.any suggestions?
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post #2 of 3 (permalink) Old 05-03-2010
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The code could be the result of the issue and not the cause of the issue. Have you had a tune up in a while?



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post #3 of 3 (permalink) Old 05-04-2010 Thread Starter
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Replaced cap,rotor,plugs and wires.Also fuel filter.
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