missfire

2003 HONDA CRV
120,000 MILES • 2.4L • 4 CYL • AWD • AUTOMATIC
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GATOR63
  • MEMBER
  • 1 POST
not sure of mileage, but sometimes I get misfire code and at other times no codes I clear it. rough at idle no smoke new plugs. seems to run good going down the road but a idle rough but not always.
Mar 21, 2017 at 7:31 AM
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CARADIODOC
  • ✓Experienced Mechanic
  • 34,411 POSTS
How long since the spark plugs were replaced?
Mar 21, 2017 at 8:18 AM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,385 POSTS
Clean the IAC valve and the throttle body. Also check for a vacuum leak. Doesn't take much to cause the IAC on that engine to get sticky and cause idle issues.
Mar 21, 2017 at 2:23 PM
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