Tripped a bunch of SES codes after !cats
08-12-2011, 05:32 PM
#1
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Tripped a bunch of SES codes after !cats Background of mods in order:
- Headers, catback, TSP catted Y-pipe, SLP Lid
- Dyno tune, including delete rear o2 and front o2 codes
- Removed AIR/EGR components (still no SES codes)
- Cut out bottom of air box (still no SES codes)
- 2 years after the last mod, I recently removed the cats and put TSP ORY on. Now its throwing the following codes:
P0154 - should be o2 sensor, but those code were deleted when it was tuned
P0300 - engine misfire, I did notice this one happening when the car was hot and I left it idling in park.
P1153 - my list says something about HO2S system, but I need interpretation
P1153P - not on my code list
Soooo I have no idea what is going on with the car. All that seems like a bit much from just removing the cats, particularly because I am confident the O2 sensor codes were deleted when it was tuned. Even the fronts.
My only idea is that since I did basically 3 mods to improve airflow (!AIR/EGR, Cut the air box, and !cats) maybe it is running really lean? The car runs fine as far as I can tell, other then the occasional stumble at idle.
Please help! My inspection sticker ran out last month and all they do in MA is scan the computer.
- Headers, catback, TSP catted Y-pipe, SLP Lid
- Dyno tune, including delete rear o2 and front o2 codes
- Removed AIR/EGR components (still no SES codes)
- Cut out bottom of air box (still no SES codes)
- 2 years after the last mod, I recently removed the cats and put TSP ORY on. Now its throwing the following codes:
P0154 - should be o2 sensor, but those code were deleted when it was tuned
P0300 - engine misfire, I did notice this one happening when the car was hot and I left it idling in park.
P1153 - my list says something about HO2S system, but I need interpretation
P1153P - not on my code list
Soooo I have no idea what is going on with the car. All that seems like a bit much from just removing the cats, particularly because I am confident the O2 sensor codes were deleted when it was tuned. Even the fronts.
My only idea is that since I did basically 3 mods to improve airflow (!AIR/EGR, Cut the air box, and !cats) maybe it is running really lean? The car runs fine as far as I can tell, other then the occasional stumble at idle.
Please help! My inspection sticker ran out last month and all they do in MA is scan the computer.
08-16-2011, 08:56 PM
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have a the cats "rigged" back up temporarily, get it inspected then try an figure out the problems. thats probly the quickest/simplest way unless u send the computer back out to be checked. call PCMFORLESS in mooresville NC, they r pretty good about answering any questions u may have
10-16-2011, 10:47 PM
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Hello there I'm new on this site I just my first trans am it's a 98 the man told me the check eng. Light has never came on I have no cats or rear 02 he said it was tuned so the check eng. Light would not come on but it came on while driving it home bank 1 and 2 codes so I bought o2 delete sensors from afterthought auto and the codes still come on so what is my next step to take it to a speed shop ?
