UnBeGleavable Posted September 25, 2012 Share Posted September 25, 2012 Buddy got his legacy wagon smog checked today an they say its rich at idle. Things to check? Any help would be great. Link to comment Share on other sites More sharing options...
pqkillerAU Posted September 25, 2012 Share Posted September 25, 2012 Could be a bunch of things from as simple as needing ECU reset to a fried open circuit injector. Are there any other symptoms such as poor driveability, smoke on acceleration (black smoke indicates unburnt fuel) or rough running at idle, all of which could indicate different problems. Could be as simple as a blocked IACV coolant housing. Any codes on ECU? Definitely need more info short of checking next to every sensor and moving part. Oxygen sensor usually a culprit for this sort of thing but that will generally show other problems as well. Link to comment Share on other sites More sharing options...
UnBeGleavable Posted September 25, 2012 Author Share Posted September 25, 2012 Good idle, no codes, drives normal he says. No black smoke in the exhaust Link to comment Share on other sites More sharing options...
pqkillerAU Posted September 25, 2012 Share Posted September 25, 2012 Is the idle high? What rpm does it idle at? Link to comment Share on other sites More sharing options...
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