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Catalytic Convertor troubles...


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Noticed rotten eggs odor in garage after a drive...

Please tell me there are aftermarket alternatives to a factory cat convertor...

$2166.00 from Cadillac.

Gulp.

Internet search showed people dissatisfied with ones they purchased that were not dealer supplied. Is there an aftermarket one that others know will do the job?

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Is there any codes relating to catalytic converter?

Is there a lack of power?

could just be bad gas, or need for a  tuneup. 

 

GM FAN FOREVER

Nice, clean, luxury= fine automobile

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Yes, 

P0420 catalyst system low efficiency 

You can check for car backpressure with this it screws into the o2 sensor port

https://www.amazon.com/Tool-Aid-33600-Exhaust-Pressure/dp/B0002SQW9S

 

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I know that but am curious if there is any codes present. 

Usually there is the P0420 but not always

GM FAN FOREVER

Nice, clean, luxury= fine automobile

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When my 02 Monte had a clogged cat, it had a P0420.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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On Sat May 20 2017 at 0:20 AM, rockfangd said:

I know that but am curious if there is any codes present. 

Usually there is the P0420 but not always

Sorry, I misunderstood

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Finally took the codes...and ran it down to near empty, then re-filled with name brand. Previous was Costco. Haven't noticed any smell...maybe the gas saved my *smurf*...:)

But did show these  "current" codes....and thankfully no "B0420"

RFA B3109

IPM B0429

DDM B3832 

DDM B1591

BodybyFisher: the link to the DTC codes, in your signature, for 1996 and above does not work...at least not for me!

 

 

 

Edited by Nohilow
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Costco gas is toptier so that shouldn't have been your problem.  Sometimes a nice highway stint will clear a 'stop and go run' vehicle of a lazy 'cat'.  

Chuck

'17 XT5, '04 Bravada........but still lusting for that '69 Z-28

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could have been watery or contaminated fuel also. These cars today run so good that even with poor gas sometimes it is hard to tell.

GM FAN FOREVER

Nice, clean, luxury= fine automobile

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20 hours ago, cdgrinci said:

Costco gas is toptier so that shouldn't have been your problem.  Sometimes a nice highway stint will clear a 'stop and go run' vehicle of a lazy 'cat'.  

Thanks, I am not as worried about this since I emptied and refilled the tank. The strong odor was such a change that I immediately went tp the dark side and assumed the cat was bad. I've got a nice trip planned to stretch out her legs.

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1 hour ago, Göran W said:

FYI The codes are all about a bad window and the rear seat temp.

Thanks...the bad window refers to my driver door regulator which i am replacing this weekend...napa for $81. Every time I take off a door panel, I always worry about screwing up the clip or the panel in some way. The utube vid I saw made it appear that that should not be a problem. Perhaps the Cad clips are a better design?  ....I'll find out this weekend! Rest of the procedure looked pretty straightforward and benefits from a better design. Love the protective panel instead of plastic sheet. Not sure why the rear seat temp is throwing a code. They seem to be working just fine.

BTW, where is the best place to go for the codes? 

 

Edited by Nohilow
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On 5/26/2017 at 8:09 PM, rockfangd said:

Good.

I would not worry about it as long as you have good power, no misfires, and no related codes

Thanks, It is running quite well, and with the new gas, the smell is gone. Very glad the codes are not engine related...

 

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