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Toyota Repair/Toyota corolla 2005


Check engine light says that my catalytic converter was bad.  Did not have the money to repair at Toyota dealership, so I had repairs done at muffler/exhaust shop.  I have had front and back of muffler replaced and I replaced 02 sensor.  I am still getting a check engine light on. The dealership says that the aftermarket parts are not compatible for the car.  They want me to replace everything at dealership for 3500.00.  The only thing I haven't replaced is the Manifold, gasket and heat shield bolts, which they said I needed. Would it help to replace these items only or replace the whole thing again.

Hello, Do you have the current  diagnostic trouble code numbers available, if not please take the car to a major autoparts store like Autozone, Advance Auto, O'Reillys they help you get the diagnostic code numbers at no charge, then please reply here and I can start helping with this problem.

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Ted Ritter


I have more than 28 years experience as toyota technician, I will be able to answer most questions related to the Toyota product line up to the present year models,I am located in the US but welcome questions from other regions of the world. When asking a question please provide specific information: year,model, engine,transmission information. Provide as much information as possible including a brief repair history if possible. I have been a volunteer here for more ten years an have answered over 16,000 questions helping Toyota owners with their problems and save thousands of dollars without any compensation, some of my answers are published on many other websites including google and various automotive forums. DONATIONS ARE VERY MUCH APPRECIATED, IF YOU HAVE RECIEVED HELPFUL INFORMATION PLEASE MAKE A DONATION. AS OF TODAY (JULY 22, 2014) ALL REQUESTED GRAPHICS, ILLUSTRATIONS, DIAGRAMS, PHOTOS, WILL REQUIRE THE MINUMUM DONATION UP FRONT.


Toyota technician since 1979,expert in electrical systems,OBD systems,engine repair, driveability problems,EFI systems,ASE certified,Toyota master technician.
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Toyota master technician, ASE certified in eight catagories, Hybrid vehicle certified. Toyota technical training: Engine Automatic transmission Manual transmission Drivetrain Electrical systems Brakes and chassis Air conditioning Engine performance and diagnostics Hybrid systems

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