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Can u Check the Funtion of a Cat Conveter


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ricstpete2959
New User

Dec 12, 2011, 12:38 PM

Post #1 of 5 (1237 views)
Can u Check the Funtion of a Cat Conveter Sign In

Is there a way to check the Cat. Converter on a 2007 chevy 1500 4.3 6 cyl. it came up on the codes when read.


Hammer Time
Ultimate Carjunky / Moderator
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Dec 12, 2011, 12:45 PM

Post #2 of 5 (1227 views)
Re: Can u Check the Funtion of a Cat Conveter Sign In

Efficiency codes are hard to verify. There is a whole list if criteria it has to meet before to code will set so it's nearly always 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.



Discretesignals
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Dec 12, 2011, 12:52 PM

Post #3 of 5 (1214 views)
Re: Can u Check the Funtion of a Cat Conveter Sign In

Yes you can. You can check it two ways. One is with a scanner that has the capability to view engine data stream information and graphing. You watch the front and rear O2 sensor signals with the engine at operating temperature and engine speed around 2500 rpm. If the signals look the same, cat isn't doing it's job.

The other way to test a cat is with a exhaust gas analyzer.





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Hammer Time
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Dec 12, 2011, 1:12 PM

Post #4 of 5 (1204 views)
Re: Can u Check the Funtion of a Cat Conveter Sign In

That would work if it's flat out not working at all but if it's marginal, the test would be inconclusive. The exhaust analyzer isn't going to tell you much of anything about Cat efficiency specifically.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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.



zmame
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Dec 12, 2011, 5:56 PM

Post #5 of 5 (1187 views)
Re: Can u Check the Funtion of a Cat Conveter Sign In

how many miles are on your truck? emission is 8 year 130km(80miles) i believe.

You can also take the pipe off and visually inspect for damage to the cat.. Like HT said 99 out of 100 times a efficiency code means the cat is bad.







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