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Old 07-22-2019, 05:17 PM   #1
Boxster 986
 
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Join Date: Oct 2017
Location: Nebraska
Posts: 45
Singular cylinder misfire (P0305)

So this occurred going down highway at about 4500rpm. Sometimes that high of RPM feels like the back end loses traction (if that makes sense) I’m guessing this was a contributing factor.

I tried looking online to see if there were similar problems like this, but all of them were for banked misfires on the whole side, nothing for singular codes.

I went ahead and ordered new coils just to be sure, plugs were replaced last July and i’ve since put about 5,000 miles on so I can’t imagine that’s contribution.

I felt around to make sure nothing was loose (weird enough it’s probably happened to someone before, that was just my first guess) and the only thing i noticed was the rubber sleeve wasnt up against the coil like the rest of them, but other than that everything was snug.

If anyone has any other guesses i’ll be happy to test with my limited skills.

Heres a picture of the code from the OBII scanner:
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