Question about Toyota Camry

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Toyota camry failed smog check this morning here in Cali. I suspect either the oxygen sensor or the EGR Valve. Are these trh only reasons that Toyotas fail smog? It is the emiisions part where it is failing because DMV lowered the emission number for noxious oxide out of the muffler. Any help with this will be appreciated. New cars are getting expensive and I would rather keep this one running if I could. Thanks.

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  • Richard Shirk May 27, 2011

    Thanks for the input. It is being dianosed at this time. You are right about these issues and the coat of upkeep versus the cost of keeping it running. I keep ho[ing these things get cheaper. My owner's manual seems to bear out what you are saying. thanks for your help. I don't really seem to be losing a lot of oil however.

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There are many things that can cause the NO to be to high, high oil use is a common problem that causes the high reading, but it could be vacuum leak, O2 sensor, a bad spray pattern from the fuel injectors the best thing to do is have an on-board computer diagnostic run on the car. it is doubtful that the EGR would cause this problem unless it is sticking part way open but that should cause a ruff idle maybe even a stall at idle. start with the basics a good tune up and make sure the ignition timing is correct, also try cleaning the injectors and changing the oil, i don't know how bad you failed but if the car was on the border a good tune up might get it to pass.

Posted on May 28, 2011

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Can also fail if catalytic converter is bad or if it is burning too much oil. These issues start getting expensive and you will have to start thinking about value of the vehicle vs the cost of repair. If it is a 2001 or older or has more than 150,000 miles then it could be these options listed. Otherwise, your first thoughts are likely correct and cheaper!

Posted on May 27, 2011

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