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misfires, rough cold idle V50

posted by  someone claiming to be Panhorst on  Sat Jun 18 11:06 CST 2016 [RELATED]

My 05 v50 T5 (128K, auto) has shown misfire codes of 300-305 a couple of times in the last few weeks and recently when I drove it (my wife's car) I noticed a rough cold idle. Also noticed that the check engine light came on when I started it once. Reading a few posts about similar problems indicates to me that the cause could be any number of things. Any tips on where to start?

I've added Techron, checked all the wire connections at the coils, and was considering replacing the plug wires (which are original) but FCP does not stock them and I can't tell where the lead starts anyway. It has volvo plugs installed about a year ago.

Thanks in advance.





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New misfires, rough cold idle [V50]
posted by  someone claiming to be Panhorst  on Sat Jun 18 11:06 CST 2016 >


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