04-06-2024, 09:50 AM | #1 |
Drives: 2023 Chevy Camaro 1SS Join Date: Jan 2023
Location: N/A
Posts: 9
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Misfire in cylinder 3, P0420 code
I have an 2023 S that started stuttering/sputtering/ acting like it wanted to stall all of sudden when I was be easing on the gas or begin acceleration, not hard acceleration either. This started happening when I unplugged my AFM disabler while the car was on, I unplugged it since I was going on an long distance drive and wanted to save on some gas but Im guessing now I shouldn't unplug it at all unless I have it sitting for an extended period. A shop is telling me its a misfire in cylinder 3 and they did not see an leak either. Anyone have any suggestions? (currently at 33k miles btw, and I have unplugged my afm disabler before n this never happens, I just usual do it with the car off n did it with it on this time so wondering if that could have caused the issue possibly, i do have a sec cat delete too but ive had it for a while now n never had this issue)
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04-06-2024, 10:05 AM | #2 |
Drives: 2023 SS 1LE Sharkskin Join Date: Jun 2023
Location: MAGA COUNTRY
Posts: 313
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Did you pull the battery cable off to reset the ECU? If it was caused by you pulling the AFM disabler while it was running, it may resolve it. Hopefully you don't have a bad lifter.
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04-06-2024, 10:09 AM | #3 |
Drives: 2023 Chevy Camaro 1SS Join Date: Jan 2023
Location: N/A
Posts: 9
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No I haven’t, im not 100% sire it was caused by that but I just know thats when I noticed it, so should I still try to reset the ECU? If so where is it located for me to do so and will it reset anything else that I may need to worry about?
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04-06-2024, 12:33 PM | #4 | |
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,287
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Quote:
https://www.camaro6.com/forums/showt...=600204&page=2 |
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04-06-2024, 12:40 PM | #5 | |
Drives: 2023 Chevy Camaro 1SS Join Date: Jan 2023
Location: N/A
Posts: 9
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Quote:
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04-07-2024, 07:24 AM | #6 | ||
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,287
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Quote:
It would also be useful to look over many of the secondary cat delete threads here. I am not sure what they do with the downstream O2 sensor, but I suspect it may get replaced with a cheater plug that fools the ECU so you never get a code. |
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04-07-2024, 09:46 AM | #7 |
Drives: 2023 SS 1LE Sharkskin Join Date: Jun 2023
Location: MAGA COUNTRY
Posts: 313
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In your trunk above the passenger side wheel well is your battery. Just pull the cables off the battery for several minutes and it will reset things. You might lose things like radio station presets, clock settings, etc. But it won't hurt anything to try and it's free.
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