Question about 2006 Chevrolet Aveo
Oh My God. Talk to an honest mechanic! You probably have a bad oxygen sensor. It will cost you about $45 dollars for a new one. You can change it yourself. It is the oxygen sensor that is located just to the rear of the catalytic converter. replace it and have the codes cleared at an auto parts store. If the code comes back, then you may need to replace the oxygen sensor that is on the engine exhaust. An auto parts store can look at the voltage of each oxygen sensor and tell you which one is bad. Each oxygen sensor should be bouncing around on the voltage and should frequently be at around .7 volts. If one of them is at .1 or .2 volts, that is the bad one. Buy that one and replace it. Very simple. DO NOT DO THE $1400 repair. That repair shop is trying to take you. Hope this helps.
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Posted on Jan 02, 2017
SOURCE: Chevy Blazer P0303 and P0420
Most probably and if a cat is not flowing proper is causes back preasure that can result in sticking or burned vavles,mechanic not nice by saying ignore the cat effiency code p0420.Can ussually have cat replaced at aftermarket muffler shop for approx. $200 cheaper than valve job or excessive fuel that you have used and damage that may occur to your engine.
Posted on Jun 16, 2009
You def have a catayst problem. Before changing the converter i would recommend changing both up and down stream oxygen sensor on bank 2. If they are old thats what the computer determines if the catalyst is good or not. Most of the time after changing the sensors and resetting the light the problem is solved.
Posted on Aug 26, 2009
before replacing cat converter replace o2 sensors, they go bad and give a false reading that cat efficiency is below threshold ,meaning converter is no good , i would replace o2 sensors and reset engine light and go from there,the o2 s are normaly the problem, unless you hear cat rattling, well good luck,
Posted on Oct 26, 2009
You could have an enefficient converter. Question is what caused it to go bad? I have attended seminars on code 420, Possible causes are lack of spark or clogged fuel injectors. there have been times where the spark plug wire lays on the engine and over time it wears a weak spot in the side of the wire, its not enough to throw a miss fire code but it keeps the full amount of spark from getting to the plug and not burning the all the fuel in the cyl. A leaky injector would also cause to much fuel to be deliverd into the cyl and not get burned.
Hope this helps.
Posted on Jan 20, 2010
before doing anything make sure you have to code for your radio if you have the antilock radio feature!
disconnect the battery wait a few moments I can only give this info for a quick fix this will reset the computer and if it was just a glitch it should be fine after this should it reacour it is a oxygen sensor
Posted on Mar 04, 2010
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