LOTS OF MISFIRE

  • Tiny
  • lhe4sho
  • Volvo S80

I've been gettin a lot of misfire I have a volvo s80 2.9 engine non turbo 1999. Cylinder 1, 2and 3 spark plugs were all full with combustion. I replaced them with new ones and also switch the coil pack to cylinder 4, 5, and 6. Within 30 min the same thing happened on the same side. So I know the coil packs are working. What can my problem be. The obII gives me the code of p0134, p0300 and p1174.

Thursday, November 15th, 2007 AT 1:32 PM

2 Answers

  • Tiny
  • DaveJoseph84
  • Member

I am having this same problem. I have good spark at all cyllenders, good fuel. What else could it be? Head gasket maybe?

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Tuesday, July 17th, 2012 AT 7:10 PM
  • Tiny
  • hmac300
  • Expert
  • 42,050 posts

Check fuelpressure and check for vacuum leaks

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Tuesday, July 17th, 2012 AT 7:17 PM

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