This afternoon my 2007 V50 (non turbo) 99,600 miles, started sputtering slightly and didn't idle smoothly. The car start normally, there is no difficulty in starting it. I checked the codes when I got home and they came up P0301 (cylinder 1 misfire) and P0300 (multiple cylinder misfire). Possible causes are:
Spark Plug Wires
Coil or coil pack
O2 sensor
Fuel Injectors
EGR Valve
I just had new plugs put in about 2 months ago. In this car each cylinder has a coil. I doubt all would go bad at once the same goes for the fuel injectors. What could be the most likely cause of these codes?
also what is the relationship between cylinder 1 and all cylinders misfiring? would 1 misfire first and then all in a cascading manner?
I do most of the work myself.
Any thoughts?
John 98 v70, 07 v50, 91 245
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