HAS A MIS AT IDLE OR LOAD

  • Tiny
  • Ozarkie
  • 2006 Chevrolet Trailblazer
  • 120,000 miles

Has a mis at idle or load. First it was giving po301 then I replaced the plugs. Now getting po306. Also had an po106 but replaced map sensor and that went away.

Sunday, December 16th, 2012 AT 1:02 AM

7 Answers

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,502 posts

Did you gap the plugs?

Roy

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Sunday, December 16th, 2012 AT 1:03 AM
  • Tiny
  • Ozarkie
  • Member

Was told by store iridium plugs were factory gapped

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Sunday, December 16th, 2012 AT 1:05 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,502 posts

Could be a coil failure as well. Have them checked.

Roy

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Sunday, December 16th, 2012 AT 1:07 AM
  • Tiny
  • Ozarkie
  • Member

Bought 1 new coil and tried it on all cylinders but responded the same on all 6.

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Sunday, December 16th, 2012 AT 1:09 AM
  • Tiny
  • Ozarkie
  • Member

Any other ideas.

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Sunday, December 16th, 2012 AT 1:17 AM
  • Tiny
  • Ozarkie
  • Member

Any other ideas?

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Sunday, December 16th, 2012 AT 2:26 AM
  • Tiny
  • rasmataz
  • Member

Check no.6 cylinder compression, injector and no.6 wire resistances

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Sunday, December 16th, 2012 AT 3:36 AM

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