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  • #1

    check engine light=lots of money

    so on sunday my check engine light popped up, no big deal. first time since i have had the car its came on. took it to the shop monday morning and they said it threw a code for the catalytic converter. the guy asked if the car ran rough or i had bad gas mileage which, neither one is a factor. so then he said they would just clear it and see if it was a fluke deal or what since nothing lead them to believe i had a bad cat. today its back on, my very first thought when it came on sunday was o2 sensor but idk. i wish i knew more about cars than i did but someday i will learn..lol
    anyone have any ideas on what it could be? ill be taking it back tomorrow to see what they say but im just curious if someone has a guess as to what different things it could be. i know its a long shot but i just want an idea of what im up against, plus i dont want to fork over the cash for anything i don't have to like a catalytic converter which i know isnt all too cheap.
    thanks people!
    Last edited by crownee; 02-10-2012, 05:45 PM.
    g6 gtp with a 3.6l vvt...tinted all the way around, custom upper/lower grill inserts, 8000k hid low beams, 10000k hid fogs, red brake calipers, custom engine cover silver flame stripes and icon outlines, led interior dome and map lights, red neon lights under dash and back seats, audiobahn 10" powered sub, crabs, racingline stb, grounding kit, mmi's, 91 wams tune, silver eyelids, resonator delete and magnaflow muffler with magnaflow tips, gtp windshield banner, larger custom made g6 performance decal on back window and custom front lip
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  • #2
    Re: check engine light

    don't go to a shop. go to advance auto or autozone and have them scan it and get the code written on a piece of paper. find out what the code means and post it here. then we can help.
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    • #3
      Re: check engine light

      if the codes are P0420 or P0430 your going to need a cat. how many miles on it? cats have an 80k mile warranty

      Remember if "the" and "and" are spelled right its not a genuine Ahuhn post


      Dear God, please send clothes to all those poor ladies in Daddy's computer. Amen.
      Originally posted by snowmanG6
      you would try to tape a poptart to her then give her a bag a skittles and tell her to fart a rainbow

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      • #4
        Re: check engine light

        well i am sitting at 104k right now. i was told the code it read...whatever it came up as was for the cat BUT shouldnt thae car run really rough or have bad gas mileage if so? i could be wrong cause i don't know too much here but i assumed you could easily tell if you have a bad cat. my gas mileage yesterday all day with a 50 miles round trip to my parents house was an average of 27mpg which for the winter time here is pretty darn good i think. but who knows, it could be just that and its not leaving any tell tale signs yet.
        g6 gtp with a 3.6l vvt...tinted all the way around, custom upper/lower grill inserts, 8000k hid low beams, 10000k hid fogs, red brake calipers, custom engine cover silver flame stripes and icon outlines, led interior dome and map lights, red neon lights under dash and back seats, audiobahn 10" powered sub, crabs, racingline stb, grounding kit, mmi's, 91 wams tune, silver eyelids, resonator delete and magnaflow muffler with magnaflow tips, gtp windshield banner, larger custom made g6 performance decal on back window and custom front lip

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        • #5
          Re: check engine light

          You don't always get bad gas mileage or have a rough running car because of the cat. It could be that it is on the edge of going out and the sensor picked it up and is warning like it should. The price to replace a cat will vary depending on the shop you take it to. I prefer a local family owned shop where I live since they are generaly cheaper and I still get great quality because they are trying really hard to make a good name for themselves. JMHO
          1993 Eagle Talon (RIP)
          2007 Toyota Matrix XR (GONE!!!)
          2006 Pontiac G6 GTP (Let the fun begin)
          2012 Chevrolet Malibu 2LTZ (New family car)

          Definition of a Ricer.
          (Ricer: from the latin word Ricarius meaning to suck at everything you attempt)

          A person who makes unecessary modifications to their most often import car (hence the term "rice") to make it (mostly make it look) faster.

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          • #6
            Re: check engine light

            im thinkin its the o2 sesor on the backside of the cat in front of the motor. my and cav were talkin about it and thats his guess so we'll see tomorrow what the shop says this time.
            g6 gtp with a 3.6l vvt...tinted all the way around, custom upper/lower grill inserts, 8000k hid low beams, 10000k hid fogs, red brake calipers, custom engine cover silver flame stripes and icon outlines, led interior dome and map lights, red neon lights under dash and back seats, audiobahn 10" powered sub, crabs, racingline stb, grounding kit, mmi's, 91 wams tune, silver eyelids, resonator delete and magnaflow muffler with magnaflow tips, gtp windshield banner, larger custom made g6 performance decal on back window and custom front lip

            Comment

            • #7
              Re: check engine light

              why dont you just get the code and tell us like i said. there are so many different o2/cat codes there could be. plus, you have over 100k so you should replace all your o2 sensors anyway if they havent been yet. I'm thinking of replacing all mine soon and i only have <50k. i'd rather not have one fail, or seize up in the exhaust.

              not to mention its also good to find out for yourself. a cat is an easy thing to scare people into fixing. who knows, maybe all the light is for is a small emissions leak??? better to know than to fork over a bunch of cash
              sigpic
              Wheels, Hood, Taillights, Engine, Doors, Mirrors, Bumpers,
              Windows, Trunk, Seats, Radio, Carpet, Muffler, Sunroof,
              Shifter, Pedals, Headlights, Grilles, Door Panels, etc.

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              • #8
                Re: check engine light

                Ok well the code was p0420 catalyst system efficiency below thresh hold bank 1.
                g6 gtp with a 3.6l vvt...tinted all the way around, custom upper/lower grill inserts, 8000k hid low beams, 10000k hid fogs, red brake calipers, custom engine cover silver flame stripes and icon outlines, led interior dome and map lights, red neon lights under dash and back seats, audiobahn 10" powered sub, crabs, racingline stb, grounding kit, mmi's, 91 wams tune, silver eyelids, resonator delete and magnaflow muffler with magnaflow tips, gtp windshield banner, larger custom made g6 performance decal on back window and custom front lip

                Comment

                • #9
                  Re: check engine light

                  thats our O2 sensors. they suck.
                  Paying someone to install parts on your car, and bragging about it being fast is like watching someone SMURF your wife, and being proud to raise the kids
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                  • #10
                    Re: check engine light



                    your more then welcome to replace the o2's but like i said 99% of the time its a cat

                    Remember if "the" and "and" are spelled right its not a genuine Ahuhn post


                    Dear God, please send clothes to all those poor ladies in Daddy's computer. Amen.
                    Originally posted by snowmanG6
                    you would try to tape a poptart to her then give her a bag a skittles and tell her to fart a rainbow

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                    • #11
                      Re: check engine light

                      yeah im sure its a damn cat....there goes 300 bucks i didnt want to spend, but its kind of a mod huh? lol

                      i have heard from a few people now its the o2's. is there a chance thats all it is? oh well, either way it'll be fixed friday morning.
                      g6 gtp with a 3.6l vvt...tinted all the way around, custom upper/lower grill inserts, 8000k hid low beams, 10000k hid fogs, red brake calipers, custom engine cover silver flame stripes and icon outlines, led interior dome and map lights, red neon lights under dash and back seats, audiobahn 10" powered sub, crabs, racingline stb, grounding kit, mmi's, 91 wams tune, silver eyelids, resonator delete and magnaflow muffler with magnaflow tips, gtp windshield banner, larger custom made g6 performance decal on back window and custom front lip

                      Comment

                      • #12
                        Re: check engine light

                        You can try and replace the O2 sensor since that is cheaper and won't hurt anything to replace it anyway. If that doesn't work then you have effectively narrowed it down to the cat.
                        1993 Eagle Talon (RIP)
                        2007 Toyota Matrix XR (GONE!!!)
                        2006 Pontiac G6 GTP (Let the fun begin)
                        2012 Chevrolet Malibu 2LTZ (New family car)

                        Definition of a Ricer.
                        (Ricer: from the latin word Ricarius meaning to suck at everything you attempt)

                        A person who makes unecessary modifications to their most often import car (hence the term "rice") to make it (mostly make it look) faster.

                        Comment

                        • #13
                          Re: check engine light

                          well thats a good idea, but either way they should be able to figure that part out at the shop. i would think there is a way they can test the o2's. im just hoping for the best but with the cats on our cars having 80k warranty i am sure its very possible that is the deal. i guess we'll see soon enough.
                          g6 gtp with a 3.6l vvt...tinted all the way around, custom upper/lower grill inserts, 8000k hid low beams, 10000k hid fogs, red brake calipers, custom engine cover silver flame stripes and icon outlines, led interior dome and map lights, red neon lights under dash and back seats, audiobahn 10" powered sub, crabs, racingline stb, grounding kit, mmi's, 91 wams tune, silver eyelids, resonator delete and magnaflow muffler with magnaflow tips, gtp windshield banner, larger custom made g6 performance decal on back window and custom front lip

                          Comment

                          • #14
                            Re: check engine light= lots of $$

                            well all, i just got word that my check engine light was triggered by 3 thhings.. both my cats are shot and i have a bad o2 sensor. wouldnt be so bad if they didnt both go out at the same time cause the cost of parts plus all the labor is going to be over 1 grand (gulp)
                            g6 gtp with a 3.6l vvt...tinted all the way around, custom upper/lower grill inserts, 8000k hid low beams, 10000k hid fogs, red brake calipers, custom engine cover silver flame stripes and icon outlines, led interior dome and map lights, red neon lights under dash and back seats, audiobahn 10" powered sub, crabs, racingline stb, grounding kit, mmi's, 91 wams tune, silver eyelids, resonator delete and magnaflow muffler with magnaflow tips, gtp windshield banner, larger custom made g6 performance decal on back window and custom front lip

                            Comment

                            • #15
                              Re: check engine light= lots of $$

                              wow. i have the same issue but i havent done anything about it yet. but you werent under warranty? i read somewhere that some range from 7 up to 10 years, dont know if the G6 only has 80k mile warranty. did you do OEM type or high flow cat? sucks tho that its that expensive.

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