11-17-2020, 05:18 PM
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#1
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Alex
Join Date: Jun 2017
Location: Ventura, CA
Posts: 9
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Quote:
Originally Posted by JFP in PA
Are they both moving the same (straight line or sine wave like cycle)?
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Sine wave
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11-17-2020, 05:52 PM
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#2
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Registered User
Join Date: Aug 2018
Location: Woodland Wa
Posts: 1,300
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Quote:
Originally Posted by staircasesurfer
Sine wave
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Yes that does look like a bad "Cat" waveform.
The green trace shows no bias to the rich or lean side.
The post O2 sensor is moving over the normal range so the sensor is good.
It does not bias to the lean side so no exhaust leak.
Looks like a new "Cat" is needed.
Last edited by blue62; 11-17-2020 at 06:02 PM.
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11-17-2020, 06:08 PM
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#3
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Alex
Join Date: Jun 2017
Location: Ventura, CA
Posts: 9
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Quote:
Originally Posted by blue62
Yes that does look like a bad "Cat" waveform.
The green trace shows no bias to the rich or lean side.
The post O2 sensor is moving over the normal range so the sensor is good.
It does not bias to the lean side so no exhaust leak.
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Damn, I was hoping this was not the case with OEM converters being $$$, CA is kind of a PITA with non-OEM "modifications" to smog equipment. I am not sure if I can get a set legally from a junkyard/dismantler around here with all of our regulations. Probably will need to buy off Ebay or get lucky and find one from a forum user. My understanding is that S 3.2L and non-S 2.7L have different sizes.
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11-17-2020, 07:19 PM
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#4
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Registered User
Join Date: Aug 2018
Location: Woodland Wa
Posts: 1,300
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Quote:
Originally Posted by staircasesurfer
Damn, I was hoping this was not the case with OEM converters being $$$, CA is kind of a PITA with non-OEM "modifications" to smog equipment. I am not sure if I can get a set legally from a junkyard/dismantler around here with all of our regulations. Probably will need to buy off Ebay or get lucky and find one from a forum user. My understanding is that S 3.2L and non-S 2.7L have different sizes.
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Yes it sucks that they are so costly.
I am not sure if the 3.2L VS 2.7L require different sizes.
What was the engine RPM when you took the screen shot of the above O2 sensor readings???
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11-18-2020, 04:53 AM
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#5
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Who's askin'?
Join Date: Mar 2018
Location: Utah
Posts: 2,446
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Quote:
Originally Posted by staircasesurfer
Damn, I was hoping this was not the case with OEM converters being $$$, CA is kind of a PITA with non-OEM "modifications" to smog equipment. I am not sure if I can get a set legally from a junkyard/dismantler around here with all of our regulations. Probably will need to buy off Ebay or get lucky and find one from a forum user. My understanding is that S 3.2L and non-S 2.7L have different sizes.
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I have a set from an '04 S with 85k miles.
Message me if you're interested.
Sent from my SM-G970U using Tapatalk
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11-18-2020, 08:48 PM
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#6
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Alex
Join Date: Jun 2017
Location: Ventura, CA
Posts: 9
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Quote:
Originally Posted by maytag
I have a set from an '04 S with 85k miles.
Message me if you're interested.
Sent from my SM-G970U using Tapatalk
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Thank you Maytag, I am looking at a set here locally in CA that another forum member has posted for sale, if this falls through I may take you up on them.
Thanks again!
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11-18-2020, 05:51 PM
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#7
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,942
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Quote:
Originally Posted by staircasesurfer
I am not sure if I can get a set legally from a junkyard/dismantler around here with all of our regulations.
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Staircasesurfer, I don't believe that you would be able to buy a cat (legally) from a wrecking yard in CA... :-(
.
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11-18-2020, 07:28 PM
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#8
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Registered User
Join Date: Jul 2019
Location: Charleston
Posts: 517
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Quote:
Originally Posted by Gilles
Staircasesurfer, I don't believe that you would be able to buy a cat (legally) from a wrecking yard in CA... :-(
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Why? Wouldn't recycling/reusing an item that reduces CO output be a good "eco" thing?
__________________
'99 supercharged 4.3 chevy Boxsterado
'98 PP13B powered thing
This hairdresser only cuts mullets
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11-18-2020, 07:57 PM
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#9
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Registered User
Join Date: Oct 2018
Location: North Cali
Posts: 816
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Quote:
Originally Posted by Qingdao
Why? Wouldn't recycling/reusing an item that reduces CO output be a good "eco" thing?
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In California "pick `n` pull" junkyards all cats are cut out from the cars, literally. It`s very annoying sometimes when you need something from that area and it`s destroyed by that pipe cutter they use for this purpose. I guess it`s for recycling the platinum.
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11-18-2020, 08:53 PM
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#10
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Alex
Join Date: Jun 2017
Location: Ventura, CA
Posts: 9
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Quote:
Originally Posted by Qingdao
Why? Wouldn't recycling/reusing an item that reduces CO output be a good "eco" thing?
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CA has some of the most illogical laws for emissions. It is one of the most frustrating thing for car enthusiasts in this state.
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11-19-2020, 09:34 AM
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#11
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,942
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Quote:
Originally Posted by staircasesurfer
CA has some of the most illogical laws for emissions. It is one of the most frustrating thing for car enthusiasts in this state.
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Also... you are no longer able to but seats (or dashes..) that have integrated airbags
this really sucks for the people that is trying to restore their vehicles.. 
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