Flashing CEL? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Matt.Kim · 03-12-2014, 06:19 PM

Sorry guys I'm pretty sure this has been discussed before but, while I was driving around my car was running fine, but then when I slowed down my CEL comes on and it starts to flash then me Stability Tract came up for a second and went away. I have read on here that it might just be a loose connection but in my case the CEL at some point keeps flashing then stays solid. The only thing I have done to the engine is put on a ROTO-FAB intake on and a SLPLM2 axle back. Oh and I drive a 2011 2lt.

3rdgen3 · 03-12-2014, 06:25 PM

Flashing CEL is a serious missfire being detected.

I would check all your plugs & wires to make sure they're nice and tight/snug. Thats the first place to start looking.

Angrybird 12 · 03-12-2014, 06:29 PM

Quote:

Originally Posted by 3rdgen3

Flashing CEL is a serious missfire being detected.

I would check all your plugs & wires to make sure they're nice and tight/snug. Thats the first place to start looking.

I don't think the V6 has plug wires.

OP first thing I would do is either buy a OBD 2 code reader or go to auto zone or advance auto and see if they can read any codes stored.

3rdgen3 · 03-12-2014, 06:34 PM

Quote:

Originally Posted by Angrybird 12

I don't think the V6 has plug wires.

OP first thing I would do is either buy a OBD 2 code reader or go to auto zone or advance auto and see if they can read any codes stored.

Ok, but it still has plugs, right? Could also have a cracked/ripped COP boot, or even a bad coil.

I dont know much about the 3.6 LLT/LFX but if its individual coils, scan the CEL and see what cylinder is the problem. Move that coil from the problem cylinder to another one and if the missfire/CEL code changed over to the cylinder you moved the coil too, then you know that coil is the problem.

Matt.Kim · 03-12-2014, 09:29 PM

Quote:

Originally Posted by 3rdgen3

Ok, but it still has plugs, right? Could also have a cracked/ripped COP boot, or even a bad coil.

I dont know much about the 3.6 LLT/LFX but if its individual coils, scan the CEL and see what cylinder is the problem. Move that coil from the problem cylinder to another one and if the missfire/CEL code changed over to the cylinder you moved the coil too, then you know that coil is the problem.

Okay thanks for the information, I checked everything and I some of the plugs I guess weren't all the way in, after putting them in nice and snug it started up right and nothing seemed wrong but the CEL was still on. Does that mean I have another issue? Like the CEL wasn't flashing nor did the stabilitrack come on.

Matt.Kim · 03-13-2014, 08:01 PM

So I got to the dealer and they said that they couldn't duplicate the problem so everything was fixed, but the CEL came back on. Has anyone else experienced this?

3rdgen3 · 03-14-2014, 08:33 PM

Quote:

Originally Posted by Matt.Kim

So I got to the dealer and they said that they couldn't duplicate the problem so everything was fixed, but the CEL came back on. Has anyone else experienced this?

Did you clear the code and then rescan to see what it says the problem is??

If the CEL is on go back to the dealer...they cant tell you they cant reproduce the CEL, lol.

Matt.Kim · 03-15-2014, 09:14 PM

Quote:

Originally Posted by 3rdgen3

Did you clear the code and then rescan to see what it says the problem is??

If the CEL is on go back to the dealer...they cant tell you they cant reproduce the CEL, lol.

Yeah I did. Now they are saying that my cats are going bad....

canecorso69 · 03-16-2014, 01:36 AM

You prolly have a P0300, P0420 and P0430 codes. 0300 code is multiple misfire code which was prolly caused by loose plugs which in turn gave you the 0420 and 0430 codes due to raw fuel going to cats. Clear the CEL and drive it for a cycle then scan for codes. FWIW... I could be completely wrong on my assessment as I am not a mechanic.

MLAZ1990 · 03-22-2014, 03:52 AM

My CEL flashed last night and went away but now the car rumbles/shakes at idle!

03-12-2014, 06:19 PM	#1
Matt.Kim Drives: 2011 2lt/rs Join Date: Mar 2013 Location: Richmond, Virginia Posts: 70	Flashing CEL? Sorry guys I'm pretty sure this has been discussed before but, while I was driving around my car was running fine, but then when I slowed down my CEL comes on and it starts to flash then me Stability Tract came up for a second and went away. I have read on here that it might just be a loose connection but in my case the CEL at some point keeps flashing then stays solid. The only thing I have done to the engine is put on a ROTO-FAB intake on and a SLPLM2 axle back. Oh and I drive a 2011 2lt.

03-12-2014, 06:25 PM	#2
3rdgen3 10-bolt Destroyer Drives: 2012 Camaro 2SS/RS - AGM, LS3/6M Join Date: Jun 2012 Location: Canukistan Posts: 860	Flashing CEL is a serious missfire being detected. I would check all your plugs & wires to make sure they're nice and tight/snug. Thats the first place to start looking. __________________ 2012 Camaro 2SS/RS - LS3/TR6060: Cam, Headers, Exhaust, Intake, Gears, Twin Disk, Suspension, Tuned - 475rwhp, 443rwtq

03-13-2014, 08:01 PM	#6
Matt.Kim Drives: 2011 2lt/rs Join Date: Mar 2013 Location: Richmond, Virginia Posts: 70	So I got to the dealer and they said that they couldn't duplicate the problem so everything was fixed, but the CEL came back on. Has anyone else experienced this?

03-16-2014, 01:36 AM	#9
canecorso69 run ur car not ur mouth Drives: 2013 1LE Join Date: Jul 2013 Location: Middletown, DE; Mayfield, NY Posts: 1,220	You prolly have a P0300, P0420 and P0430 codes. 0300 code is multiple misfire code which was prolly caused by loose plugs which in turn gave you the 0420 and 0430 codes due to raw fuel going to cats. Clear the CEL and drive it for a cycle then scan for codes. FWIW... I could be completely wrong on my assessment as I am not a mechanic.

03-22-2014, 03:52 AM	#10
MLAZ1990 Drives: 2012 black camaro 2LS Join Date: Nov 2012 Location: Chicago, IL Posts: 3,023 View My Garage	My CEL flashed last night and went away but now the car rumbles/shakes at idle!