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P0301 misfire # 1 cylinder. S70

posted by  keith bergman on  Sun Aug 8 10:06 CST 2010
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last visit: Sat Oct 2 07:10 CST 2010
[RELATED]

I do not want to confuse you as much as I am.
Here are the things I have done and the continuing problem. I get a P0301 code, changed the plugs with NGK G-Power Platinum plugs, Still had P0301 code. Bought new coil and replace the #1 cylinder coil, still had P0301 code. Then I saw the
post from someone that they moved the coil to another cylinder to verify the
coil was the problem. I moved the #1 cylinder coil to # 5 cylinder and #5 coil
to #1 cylinder. Ran the car and now have P0305 code. I took the coil back and
they verified it was the correct coil for my engine, gave me another coil and
it misfires as well. The engine does not run as rough as it did before
but still runs rough and still have the P0305 code. Moved the new coil back to
#1 cylinder and now have the P0301 code. I am very frustrated and think it
might be that I need to change all the coils. Is it possible that the replacement coils fire different so the computer reads them as misfiring? I am at a loss for a solution. I have always had at least one Volvo and love the car. I guess I may have to take this to a dealer to get it fixed this time.





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