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4th Generation Camaros 1993-2002

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Old 06-15-2013, 02:47 PM   #1
darkblue02
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Exclamation PLEASE Help me!!2002 35th ann.

I have a 2002 v6 5-speed 35th ann. it is my love lol..but about 5 days ago the ses light came on and i took and had it put on diag computer and they pulled up 3-4 codes and the woman at advanced said it was probably the catalytic converter but then said if it clogged it would just kill the car i'm pretty sure the 1st code was po430 but i'm gonna take back up today and see if someone more knowledgeable will help me...it had not acted funny it was driving fine then yesterday i was accelerating through the gears it went fine through 1-3 then in 4th about 2500rpm it just felt like it collapsed for a split second like it lost all power then picked back up n was fine til 5th gear about 58mph and it did it again just for a second ..i really need to know what someone with experience with camaros thinks...ive been told everything from the fuel pump/filter to converter to mass air flow sensors??please help if i had the money i wouldnt mind doing the process of elimination but my financial status is a lil less than usual! please help and thank you!....I'm about to run to advanced in a min so ill have all of the actual codes to put on here thanks again for anyone that takes the time to help me and if i can return the favor in anyway ill do so!!
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Old 06-15-2013, 02:54 PM   #2
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http://www.dtcsearch.com/P0430/GM/
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Old 06-16-2013, 06:48 PM   #3
darkblue02
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The code was actually P0420 i took it to advanced auto i'm thinking of just taking it to a chevy dealer..maybe their computers can pinpoint the actual problem Ive still been told to change this then try this I cant afford the process of elimination at this moment i need to know exact problem :(
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Old 06-17-2013, 12:15 AM   #4
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A code P0420 may mean that one or more of the following has happened: Leaded fuel was used where unleaded was called for A damaged or failed oxygen sensor (HO2S) Downstream oxygen sensor (HO2S) wiring damaged or connected improperly The engine coolant temperature sensor is not working properly Damaged or leaking exhaust manifold / catalytic converter / muffler / exhaust pipe Retarded spark timing The oxygen sensors in front and behind the converter are reporting too similar of readings Leaking fuel injector or high fuel pressure Cylinder misfire Oil contamination Possible Solutions Some suggested steps for troubleshooting a P0420 error code include: Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required. Use a scope to diagnose the oxygen sensor operation (Tip: The oxygen sensor in front of the catalytic converter normally has a fluctuating waveform. The waveform of the sensor behind the converter should be more steady). Inspect the downstream heated oxygen sensor (HO2S), replace if necessary Replace the catalytic converter Overall probably the biggest mistake vehicles owners make when they have a P0420 code is to simply replace an oxygen sensor (H02S). It is important to do proper diagnosis so you're not wasting money replacing parts unnecessarily. It is strongly recommend that if you need to replace the catalytic converter that you replace it with an OEM unit. Second choice would be a high-quality replacement part. There are many stories where people replaced the cat with a cheaper aftermarket one only to have the code return shortly thereafter.

Good luck bud!!
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