1998 Isuzu Trooper 3.5L V6 Automatic

I''''m getting a P0430 check engine light, banks 1 and 2.
I
just installed new O2 sensors (oem) and started using 92 octane
gasoline from 87 to have a cleaner burn. Could this be the problem? Not
sure if this was a good idea.

I did check the possible causes :

<ul>[*]1. The catalytic converter is no longer functioning properly...maybe, truck is almost 10 years old
</span>[*]2. An oxygen sensor is not reading (functioning) properly...new O2 sensors installed (OEM)</span>, so I''''m ruling this one out.[*]3. There is an exhaust</span></font><div style="position: absolute; z-index: 4000; top: -32px; left: -18px; display: none;" id="preLoad1"></div></span> leak...don''''t see or feel any leak on the exhaust pipe when visually inspected.</span><br style="font-weight: bold; text-decoration: underline; color: rgb(153, 0, 102);">[/list]I reverted back to using 87 octane for about 1 day now...crossing my fingers 0430 code goes away.[img]smileys/smiley6.gif[/img]

Thanks for any info.

 

Fixed the problem....


Bank 2 catalytic converter (Driver''s side) was replaced...


Passed smog check! 15mph was borderline high, enough to pass smog! the 25mph test on rollers passed with flying colors.


woooooooooooohooooooooooooooooooooooooooooo


I''ll probably change bank 1 cat in two years time when it fails smog. hahaha

 

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I just realized that you have a trooper. I have a Rodeo and the same code. They printed off the list at auto zone and has cat. converter as one issue. How much did it cost?

 

I'll discuss with my senior consultant then post here your answer.