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I took a picture this morning. Please see the arrow side. Wouldn't the passenger side in this picture be the most forwarded block of cylinders? Thank you
I certainly understand your logic and it makes sense but you are pointing at the intake manifold, not the block…I will attempt to show a pic of the block vs the intake manifold.
bank one is on the left side on all SC430 engines…
Oh that is great to know. I was definitely looking at the wrong thing. Thank you. now it all makes sense.
But I do know that the driver side has a leak but I guess I still did not get any error code for that. So question is should I still bother replacing the gasket or that little leak is not big deal provided I still do not have any error code for that.
Now time to focus on the passenger side. I did not find any leak form passenger side. Should I start with replacing the oxygen sensor?
The right intake runners are forward of the left intake runner but the pistons are in the same spot.
even if they were not, it doesn’t matter because bank 1 is always on the left regardless of the car make.
OBDII is a standard and all auto manufacturers agree to it.
I've been through this myself. Best not to screw around. Replace both at the same time. Good chance the good seal will be damaged. Use the thick gaskets A/A kept giving me thin gaskets that I had to replace yearly. Researched and found correct thick gaskets. Tip, run a long bolt with nut to help alignment, then the regular bolts. Good luck
Oh that is great to know. I was definitely looking at the wrong thing. Thank you. now it all makes sense.
But I do know that the driver side has a leak but I guess I still did not get any error code for that. So question is should I still bother replacing the gasket or that little leak is not big deal provided I still do not have any error code for that.
Now time to focus on the passenger side. I did not find any leak form passenger side. Should I start with replacing the oxygen sensor?
Thank you so much
Have you connected an OBDII code reader and looked at the pattern of Bank 2 sensors 1&2 like the guy showed us in the first video I posted?
I have the P0420 & P0430 codes on my 2000 Firebird TransAm. I replaced the Bank 1 sensors 1&2 and it eliminated the P0420 code for about 3,000 miles, then it came back.
I know I need to build that smoke generator to run a smoke test on my exhaust but haven’t done it yet.
I certainly don’t want to buy new catalysts if I don’t have too…they are sooooooo expensive.
You could change both of the gaskets and see what happens.
Have you connected an OBDII code reader and looked at the pattern of Bank 2 sensors 1&2 like the guy showed us in the first video I posted?
I have the P0420 & P0430 codes on my 2000 Firebird TransAm. I replaced the Bank 1 sensors 1&2 and it eliminated the P0420 code for about 3,000 miles, then it came back.
I know I need to build that smoke generator to run a smoke test on my exhaust but haven’t done it yet.
I certainly don’t want to buy new catalysts if I don’t have too…they are sooooooo expensive.
You could change both of the gaskets and see what happens.
I will connect OBDII tomorrow and examine the oxygen sensor graph.
I may do another exhaust leak test using soap/water spray technique and this time really focus on the passenger side where bank 2 is.
I found a solution and it works…I posted this on the Firebird Trans Am forum but it applies here…
I have been fighting the notorious P0420 and P0430 for quite a while on my 2000 Pontiac Firebird TransAm LS1 5.7 V8. I changed my OEM bank 2 O2 sensors and it did get rid of the P0430 code for a few weeks but it came back…I used Denso O2 sensors to replace the OEM AC Delco.
the solution was a $7 Spark Plug nonfouler. Yep, this really works and it doesn’t matter if the cats are there or not, according to some on YouTube. I found my $7 defoulers at Autozone. this will work if you have a P0420 and/or P0430…if you have other emission codes, no guarantees…and, YOU MUST HAVE FOUR OPERATIONAL O2 SENSORS.
All you need is one package of two nonfoulers, again $7. you will need to drill out the nonfouler to make the O2 fit but DON’T drill all the way through like many youtube videos tell you…some suggest putting steel wool in the nonfouler but I didn’t because I thought it might rust, besides, the mod worked without steel wool.
NOTE: They tell you to drill all the way and then put the other nonfouler on the first, if you do this, it will be too long and you will need a 90 degree fitting…
you want to retain the small hole on the nonfouler…again, take it slow and DON’T drill all they way through. drill a little at a time and keep test fitting until the sensor will bolt in the nonfouler. reassemble, clear the codes and they won’t come back…
the idea is the nonfouler has the small hole and it moves the o2 sensor away from the main stream of the exhaust gasses. this should work on any car regardless of the exhaust configuration… this will NOT pass a sniffer this will pass some emission tests this may or may not pass a visual test.
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