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Lots of misfire

Tiny
LHE4SHO
  • MEMBER
  • 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.
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Thursday, November 15th, 2007 AT 1:32 PM

2 Replies

Tiny
DAVEJOSEPH84
  • MEMBER
  • 1 POST
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
  • MECHANIC
  • 48,601 POSTS
Check fuelpressure and check for vacuum leaks
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Tuesday, July 17th, 2012 AT 7:17 PM

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