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2002Buick Century V6 103K
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chickenhouse
Enthusiast
Jul 18, 2009, 5:37 AM
Post #1 of 23
(2093 views)
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2002Buick Century V6 103K
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Runs fine, ses light on shows code P0420. I'm thinkin plugs & wires?
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 18, 2009, 6:06 AM
Post #2 of 23
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Re: 2002Buick Century V6 103K
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Nope, that's a bad Catalytic Converter. It could have been a misfire that ruined the Cat but your looking at a new Cat now.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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chickenhouse
Enthusiast
Jul 18, 2009, 6:12 AM
Post #3 of 23
(2082 views)
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Re: 2002Buick Century V6 103K
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Thanks, will inform.
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Hammer Time
Ultimate Carjunky
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Jul 18, 2009, 6:15 AM
Post #4 of 23
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Re: 2002Buick Century V6 103K
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You can get an aftermarket cat installed at an exhaust shop for usually around $200 to $250.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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chickenhouse
Enthusiast
Jul 18, 2009, 7:02 AM
Post #5 of 23
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Re: 2002Buick Century V6 103K
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Yea, that;s kinda what I was thinking. My brother passed 4 years ago & we have inherited the maintainence on all belongings for his widow, in the 70's. Maybe put plugs & wires on then a cat. Will see how her finances work out. Thanks Hammer
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chickenhouse
Enthusiast
Jul 20, 2009, 12:23 PM
Post #6 of 23
(2054 views)
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Re: 2002Buick Century V6 103K
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Spoke with her today, the cat was replaced less than 1 year ago. Again, car runs great. Does not feel like any misfire but the way the coils fire it would be hard to detect. Will put in plugs & wires next.
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Hammer Time
Ultimate Carjunky
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Jul 20, 2009, 12:39 PM
Post #7 of 23
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Re: 2002Buick Century V6 103K
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No, that code can be nothing but a bad cat.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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chickenhouse
Enthusiast
Jul 20, 2009, 12:45 PM
Post #8 of 23
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Re: 2002Buick Century V6 103K
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Hammer- I was going on the theory that if the cat only lasted less than a year, replacing the cat will be temporary because the plugs may be bad allowing unburned gas to stop up the cat. Was not looking to cure the ses light with a tune up.
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Hammer Time
Ultimate Carjunky
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Jul 20, 2009, 12:49 PM
Post #9 of 23
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Re: 2002Buick Century V6 103K
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OH, OK
In that case you would be right. If you have a bad misfire or if it's burning coolant, it will wipe out the cat in pretty short order.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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chickenhouse
Enthusiast
Jul 22, 2009, 5:41 AM
Post #10 of 23
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Re: 2002Buick Century V6 103K
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Up date, gave the car back to her. Running fine. Seems the ses light has been on since she replaced the cat. No one shut it off. I don't have an obd2 & battery disconnect is of no use. At least she dosen't mind the light. Thankx Hammer.
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Hammer Time
Ultimate Carjunky
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Jul 22, 2009, 5:47 AM
Post #11 of 23
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Re: 2002Buick Century V6 103K
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How did you read the code? Whoever read the code should have been able to clear it. If she has an Autozone in the area, they will read and clear it for free.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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chickenhouse
Enthusiast
Jul 22, 2009, 5:53 AM
Post #12 of 23
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Re: 2002Buick Century V6 103K
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I took it too Autozone & had them scan it. In Heber Springs AR, they are not allowed to reset the computer.
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Hammer Time
Ultimate Carjunky
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Jul 22, 2009, 9:27 AM
Post #13 of 23
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Re: 2002Buick Century V6 103K
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That's strange. They do everywhere else.
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Sidom
Veteran
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Jul 22, 2009, 1:25 PM
Post #14 of 23
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Re: 2002Buick Century V6 103K
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Disconnect the battery for 10 minutes, turn the headlights on & pump the brk pedal about 20 times & then hook it back up.....That should clear the light.
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chickenhouse
Enthusiast
Jul 22, 2009, 1:48 PM
Post #15 of 23
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Re: 2002Buick Century V6 103K
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HEY- I'll try it! Do I have to hold a coat hanger in my left hand out the window, right foot in the glove box & well, you know. Just kidding. I will try this. Thanks sidom!
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Double J
Veteran
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Jul 22, 2009, 2:21 PM
Post #16 of 23
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Re: 2002Buick Century V6 103K
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Here in Illinois,they're not allowed to clear any codes either.
They do for me when i'm there,but normally they won't .
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chickenhouse
Enthusiast
Jul 22, 2009, 3:15 PM
Post #17 of 23
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Re: 2002Buick Century V6 103K
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That's bout as dumb as dry counties- in which I live! Sorry, got off topic.
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chickenhouse
Enthusiast
Jul 23, 2009, 10:42 AM
Post #20 of 23
(1985 views)
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Re: 2002Buick Century V6 103K
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Trust me, I know. Will get the car back next week. Thanks guys
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Loren Champlain Sr
Veteran
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Jul 23, 2009, 1:35 PM
Post #21 of 23
(1979 views)
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Re: 2002Buick Century V6 103K
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Try burying a dishrag in the moonlight. Works every time. Ooooops. That's for warts.
Loren
SW Washington
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chickenhouse
Enthusiast
Jul 24, 2009, 1:46 PM
Post #22 of 23
(1970 views)
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Re: 2002Buick Century V6 103K
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NO CRAP! She was talking about that when I gave her the car back!! You guys know each other or just go to the same "old wives tale " school?
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Loren Champlain Sr
Veteran
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Jul 25, 2009, 3:51 AM
Post #23 of 23
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Re: 2002Buick Century V6 103K
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>>"old wives tale " <<
Hey, don't knock it 'til you try it!  Of course, if your neighbors see you doing it, you may have some 'splainin' to do.
Loren
SW Washington
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