From: me on 8 Jan 2008 15:25 Got this code and it says something abt catalytic converter system. God I hope not cause that's expensive to replace? Do cat system even wear out? Car has 140k on it and was bought new.
From: Jason Howe on 8 Jan 2008 16:31 It can be expensive depending on the car. On yours, probably only a couple hundred. If your protege is anything like most Mazdas, the entire exhaust system is flanged, which makes replacing it yourself easy, as sections bolt up to each other, rather than being welded or clamped. As you don't say what the code actually says, or any symptoms the car is having, further diagnosis here is impossible. Yes cats can become saturated and stop converting gasses. They can also break and block exhaust flow. Those are really the only to failure modes for a cat. Either way means it needs to be replaced. --Jason me(a)privacy.net wrote: > Got this code and it says something abt catalytic > converter system. God I hope not cause that's expensive > to replace? > > Do cat system even wear out? > > Car has 140k on it and was bought new.
From: me on 8 Jan 2008 16:41 Jason Howe <spam(a)smbfc.net> wrote: >It can be expensive depending on the car. On yours, probably only a >couple hundred. If your protege is anything like most Mazdas, the >entire exhaust system is flanged, which makes replacing it yourself >easy, as sections bolt up to each other, rather than being welded or >clamped. As you don't say what the code actually says, or any symptoms >the car is having, further diagnosis here is impossible. Well here is what P0420 code means when Googled http://www.google.com/search?sourceid=gmail&q=p0420%20code%20protege >Yes cats can become saturated and stop converting gasses. They can also >break and block exhaust flow. Those are really the only to failure >modes for a cat. Either way means it needs to be replaced. OK..... is it possible it may be something cheaper such as O2 sensor? And should I go ahead and change that out first anyway? I'm unemployed and money is tight right now...hence the dumb questions
From: dahpater on 8 Jan 2008 17:56 On Jan 8, 3:25 pm, m...(a)privacy.net wrote: > Got this code and it says something abt catalytic > converter system. God I hope not cause that's expensive > to replace? > > Do cat system even wear out? > > Car has 140k on it and was bought new. P0420 Catalyst System Efficiency Below Threshold (Bank 1)
From: Woody on 8 Jan 2008 18:30 At 140k you are at the threshold of the cat. They do burn out. You need the computer scanned for other codes. The 02 sensors are monitored closely be the computer and the state of them determined. Absent of other codes you very likely have a bad catalytic converter. <me(a)privacy.net> wrote in message news:adr7o3hv0md3dfa5vj98b3m3qiru70tb8j(a)4ax.com... > Jason Howe <spam(a)smbfc.net> wrote: > >>It can be expensive depending on the car. On yours, probably only a >>couple hundred. If your protege is anything like most Mazdas, the >>entire exhaust system is flanged, which makes replacing it yourself >>easy, as sections bolt up to each other, rather than being welded or >>clamped. As you don't say what the code actually says, or any symptoms >>the car is having, further diagnosis here is impossible. > > Well here is what P0420 code means when Googled > > http://www.google.com/search?sourceid=gmail&q=p0420%20code%20protege > >>Yes cats can become saturated and stop converting gasses. They can also >>break and block exhaust flow. Those are really the only to failure >>modes for a cat. Either way means it needs to be replaced. > > OK..... is it possible it may be something cheaper such > as O2 sensor? And should I go ahead and change that > out first anyway? > > I'm unemployed and money is tight right now...hence the > dumb questions
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