• Tiny
  • bmofield
  • 2002 Honda Civic
  • 4 CYL
  • 2WD
  • automatic
  • 79,999 miles

Yes it is. Husband thinks it a head gasket. It you take off the radiator cap with running it 1/2 hr. Or more it just keeps bubbling?/
code readout from autozone(aa random cylinder misfire detecked.
aa1-fuel system concern
aa2.-Ignition concern
aa3.-MAF sensor faulty
aa4. HO2s/AF (heated oxygen sensor/Air fuel) ratio sensor fail
aa5- blocked intake or exhaust system(this code only came up once? Augh!
Thanks guys

Sunday, July 31st, 2011 AT 4:35 AM

1 Answer

  • Tiny
  • mhpautos
  • Expert
  • 29,860 posts

If you get a head check done, this is a simple chemical test for co in the cooling system, this will prove one way or the other if the gasket is a problem, the bubbling is a concern, so I would go get this test done, it takes about 5 minutes to do.

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Sunday, July 31st, 2011 AT 5:05 AM

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