[Shotimes] What can destroy a cat?

Bill Murray fordsho@cloud9grafx.com
Tue, 15 Jun 2004 12:32:31 -0400


Burning oil will also cause cats to go bad.  They are not designed to
burnoff the extra "stuff" that the exhaust will have in it.

Bill Murray

> -----Original Message-----
> From: cmichaelo@optonline.net [mailto:cmichaelo@optonline.net] 
> Sent: Tuesday, June 15, 2004 11:20 AM
> To: shotimes
> Subject: [Shotimes] What can destroy a cat?
> 
> 
> I have now destroyed my second catalytic converter. I'm 
> trying to find out if something is wrong my engine, or if the 
> cats were just of poor quality to begin with. 
> 
> Both cats were bought from Sho Shop in 1997. 
> 
> The first cat lasted about 40k, and the second about 30k.  
> 
> I strongly suspect that the first cat died to some prolonged 
> trouble with the MAF which produced rich fuel mixture. During 
> the life of the first cat I only averaged 17-18 mpg.
> 
> But with the second cat I had no such problem with the MAF.  
> I'm now averaging 20-21 mpg. However, I do have an excessive 
> oil consumption, and I'm wondering if oil is leaking into the 
> cylinders and is burning up, if that can destroy a cat?
> 
> What else could destroy a cat?  I have 130k on the car. New 
> oxygen sensors. New 77mm ProFlow MAF. No chip.  Good 
> acceleration.  Good idle.  Car is due for 60k though.
> 
> Michael Olsen
> 94MTX,green,BOX+
> 
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