Cary_7 Posted June 9, 2015 Share Posted June 9, 2015 please help,have a 2000 imprz outbk sport.wcodes p0301,p0302 still after complete tune up does it after 5-10 mins drive time runs like poop and smells like sulphur Link to comment Share on other sites More sharing options...
lstevens76 Posted June 9, 2015 Share Posted June 9, 2015 Have you had your catalytic converter tested for flow? Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted June 9, 2015 Share Posted June 9, 2015 (edited) does the CEL flash? (1 and 2 share a coil , could be bad but ....) what was done in the tune-up? miles and history, condition of car ???? Edited June 9, 2015 by 1 Lucky Texan Link to comment Share on other sites More sharing options...
Dj7291993 Posted June 10, 2015 Share Posted June 10, 2015 Unplug and pull out the pre-cat O2 sensor, see if it makes a difference. Or, if your flange is before the cat, you can do it there too. Make sure to unplug both o2 sensors when doing this test. It will help see if you have a plugged exhaust. Link to comment Share on other sites More sharing options...
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