Flashing engine light??

CamaroDude · 09-23-2019, 05:50 PM

Hello ladies and gents, so I have a perplexing one for ya. While on the highway in sports & auto manual mode, I was doing a quite “spirited” drive when towards the upper range of my RPM, the engine light of my 2017 RS started to flash. I slowed back down and it stayed flashing for about a min or two then shut off. The car seemed fine besides a slight delay in throttle response which was temp. and for the fact that cruise control wasn’t available anymore.

Anyone have any idea as to what happened? The vehicle is stock besides straight pipes going from the axle back. Any help would be appreciated

KingLT1 · 09-23-2019, 05:56 PM

flashing CEL usually indicates a Misfire condition.

dpevans · 09-23-2019, 06:06 PM

Mine did the same thing when I pegged red line. I believe it's GMs way of stashing codes in memory when you redline your car. This code will remain stored and if something ever happens and you need work the first thing they do while performing a walk around is check your codes.

TJay74 · 09-23-2019, 08:55 PM

Quote:

Originally Posted by dpevans

Mine did the same thing when I pegged red line. I believe it's GMs way of stashing codes in memory when you redline your car. This code will remain stored and if something ever happens and you need work the first thing they do while performing a walk around is check your codes.

Incorrect. The ECM can only store about 10 seconds of data and even that data is hard to get to as it is in the crash box.

A flashing check engine light is the signal of a misfire being detected. It will have code P0300 stored and if the cylinder that the misfire was detected in is known it will have P0301, 02, 03 or so own for the cylinder with the misfire.

ctrlz · 09-24-2019, 10:08 AM

Quote:

Originally Posted by TJay74

A flashing check engine light is the signal of a misfire being detected. It will have code P0300 stored and if the cylinder that the misfire was detected in is known it will have P0301, 02, 03 or so own for the cylinder with the misfire.

Given the circumstances, I agree that misfire is most likely. What grade of gas are you running?
I would get a code scanner and check for latent/pending codes.
Your issues with throttle response, cruise, etc. are related to "limp mode," which is automatically present with a flashing CEL.

RxSummit16 · 09-24-2019, 10:17 AM

I had this happen about 6 months in on my 2016. Similar situation, was on interstate, pulled into fast last to get around traffic and floored it. Flashing light that then went off. Happened another time when I pulled out and got on it a week or two later. Then CEL came on and wouldn't go off. Turned out to be something got bent on cylinder one that affected AFM and was causing a rich or lean condition (can't remember now). I should have tried the lemon law because it took them 4 or 5 different tries to finally get it right. They replaced O2 sensors, something in the exhaust, all of the injectors before figuring it out.

KingLT1 · 09-24-2019, 11:06 AM

Quote:

Originally Posted by RxSummit16

I had this happen about 6 months in on my 2016. Similar situation, was on interstate, pulled into fast last to get around traffic and floored it. Flashing light that then went off. Happened another time when I pulled out and got on it a week or two later. Then CEL came on and wouldn't go off. Turned out to be something got bent on cylinder one that affected AFM and was causing a rich or lean condition (can't remember now). I should have tried the lemon law because it took them 4 or 5 different tries to finally get it right. They replaced O2 sensors, something in the exhaust, all of the injectors before figuring it out.

Probably a push rod...

RxSummit16 · 09-24-2019, 12:00 PM

For some reason I want to say rocker arm...

vtirocz · 09-24-2019, 12:10 PM

Quote:

Originally Posted by KingLT1

Probably a push rod...

It couldn't be if he has the RS. Those don't have pushrods.

joeyazzata29 · 05-03-2021, 02:45 PM

What happened with this?

09-23-2019, 05:50 PM	#1
CamaroDude Look Ma Im A Music Artist Drives: 2017 Camaro RS Join Date: Aug 2008 Location: MI Posts: 158	Flashing engine light?? Hello ladies and gents, so I have a perplexing one for ya. While on the highway in sports & auto manual mode, I was doing a quite “spirited” drive when towards the upper range of my RPM, the engine light of my 2017 RS started to flash. I slowed back down and it stayed flashing for about a min or two then shut off. The car seemed fine besides a slight delay in throttle response which was temp. and for the fact that cruise control wasn’t available anymore. Anyone have any idea as to what happened? The vehicle is stock besides straight pipes going from the axle back. Any help would be appreciated

09-23-2019, 05:56 PM	#2
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,801	flashing CEL usually indicates a Misfire condition. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

09-24-2019, 10:17 AM	#6
RxSummit16 Drives: 2016 Summit White Camaro LT2 RS Join Date: Jun 2016 Location: NC Posts: 135	I had this happen about 6 months in on my 2016. Similar situation, was on interstate, pulled into fast last to get around traffic and floored it. Flashing light that then went off. Happened another time when I pulled out and got on it a week or two later. Then CEL came on and wouldn't go off. Turned out to be something got bent on cylinder one that affected AFM and was causing a rich or lean condition (can't remember now). I should have tried the lemon law because it took them 4 or 5 different tries to finally get it right. They replaced O2 sensors, something in the exhaust, all of the injectors before figuring it out. __________________ 2016 Camaro 2LT \| 3.6L V6 \| A/T \| Summit White \| JWM Smoked Side Markers \| Flowmaster American Thunder Axle-back Exhaust \| K&N Filter \| AIRAID Modular Intake Tube \| Overkill Tune

09-24-2019, 12:00 PM	#8
RxSummit16 Drives: 2016 Summit White Camaro LT2 RS Join Date: Jun 2016 Location: NC Posts: 135	For some reason I want to say rocker arm... __________________ 2016 Camaro 2LT \| 3.6L V6 \| A/T \| Summit White \| JWM Smoked Side Markers \| Flowmaster American Thunder Axle-back Exhaust \| K&N Filter \| AIRAID Modular Intake Tube \| Overkill Tune

09-23-2019, 06:06 PM	#3
dpevans Drives: 2024 Riverside Blue 2SS 1LE Join Date: Mar 2016 Location: Fort Wayne, IN Posts: 1,209	Mine did the same thing when I pegged red line. I believe it's GMs way of stashing codes in memory when you redline your car. This code will remain stored and if something ever happens and you need work the first thing they do while performing a walk around is check your codes.

05-03-2021, 02:45 PM	#10
joeyazzata29 j1ss Drives: '21 2SS 1LE Join Date: Dec 2019 Location: Florida Posts: 384	What happened with this?

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