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quintos Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine ODB2 Fault Codes quintos New User Nov 9, 2009, 11:07 PM Post #1 of 4 (1970 views) quintos Sign In 2003 hyundai (xg350) 3.5 8700 mil,miss fire cil 1,3,5, long fuel trim, bank1 rich, long fuel trim bank 2 lean, new spark plugs, new wires ,no vac leak ,good fuel press ,good time belt Hammer Time Ultimate Carjunky / Moderator Nov 10, 2009, 3:45 AM Post #2 of 4 (1961 views) Re: quintos Sign In It's pretty unusual to have rich codes on one bank and lean on the other. I would be really highly suspect of the 0/2 sensors in this case that one may be reading incorrectly. About the only other thing that will separate an engine like that is a severe vacuum leak on one side or a bad fuel leak on the other. I would get some new 0/2s in there first though. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. quintos New User Nov 10, 2009, 8:20 PM Post #3 of 4 (1955 views) Re: quintos Sign In thank you for your reply. i switch O2 sensors and injectors with no lock i tried to look on my cats and see if one of them is pluged and i have back pressure. i really appricitate your help. Thank you Hammer Time Ultimate Carjunky / Moderator Nov 10, 2009, 8:25 PM Post #4 of 4 (1951 views) Re: quintos Sign In You can't see a plugged cat. You have to read the exhaust pressure ahead of the cat and watch the engine vacuum. Look for an exhaust leak ahead of the cat that could be letting O/2 into the exhaust and effecting the readings. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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