2002 volvo s60 cylinder 3 misfire detected

Code P2097 has to do with the performance of the down stream, O2 sensor (after the CAT). P0301 refers to a misfire detected on cylinder #1. Testing needs to be performed. Check oil quality and level. Does the car need an oil change. Poor oil quality can affect the VVT system. If I can be anymore help let me know. Please be as specific as possible. Good luck.

I would want to know what the fuel pressure is on the rail. Sounds like the fuel pressure regulator has failed, or the return line to the tank is blocked.

For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html

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Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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Engine Misfire codes for car?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

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Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

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Oil on spark plugs and car misfires?

http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html

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This will help.

Thanks.

P0301-

Trouble Code Conditions:
Engine runtime 3 seconds, engine speed change under 1200 rpm, and the PCM detected a misfire condition present in one cylinder during the 200 (Catalyst) or 1000 revolution (Emission) test range.Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!

Possible Causes:

• Fuel metering (fuel injector dirty) problem affecting Cylinder 1
  
• Base engine (compression) problem affecting Cylinder 1
  
• Ignition system (spark plug or plug wire) problem on Cylinder 1
  

P0303....Cylinder 3 Misfire Detected

P0304....Cylinder 4 Misfire Detected

sounds like a new set of HT leads and plugs wouldnt go amiss(fire wires) weird name that fire wires HT stands for high tension leads in proper english .

Hi:
This fault could be a spark plug wire too, and even a coil pack, or distributor component. Keep up the hunt for the problem!

The link below is not for your exact model, but may be of help:
http://volvospeed.com/Repair/ignition_S80.html

well its always recommended every 3000 miles to change the oil if you are using mobil1 full synthetic oil then every 5000 miles transmission i recommend every 45000 miles 60000 mile should be radiator fluid,power steering,fuel filter if trans hasnt been done then transmission

you said you had the fluid changed ,this car takes a very exp. and special fluid ,where was it done ,do you have any check eng lights on?