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oxygen sensor

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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sisterocean
Posts: 24
Joined: 24 December 2011
Year and Model: 2007 V70
Location: Atlantic Beach, NC

oxygen sensor

Post by sisterocean »

Would a dirty oxygen sensor cause a random misfire cynider 4?

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rspi
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Post by rspi »

No. Bad plug, wire, injector, or low compression.
'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
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sisterocean
Posts: 24
Joined: 24 December 2011
Year and Model: 2007 V70
Location: Atlantic Beach, NC

Post by sisterocean »

Its been a problem for awhille. I have replaced plugs wires distributor cap rotor checked the injectors by switching 3 and 4. Sometimes check engine light is off for awhile but it always comes back. Confused

jblackburn
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Post by jblackburn »

So no misfire on 3 when you switched injectors?

Time to run a compression test.
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sisterocean
Posts: 24
Joined: 24 December 2011
Year and Model: 2007 V70
Location: Atlantic Beach, NC

Post by sisterocean »

Ok I'll try that next Thanks for the tip

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