Misfire - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Smoky10 · 12-07-2011, 04:25 PM

I drove my car to the gas station last night, on the way home my engine light came on and all of my nanny lights also came on. I was less than a block from the house and the car was still running fine, so I just coasted to the house. Got in the driveway popped the hood and one of my grannetelli wires had popped off the coil. No worries I just plugged it back in and shoot the hood, problem solved. Well get in the car to go to work this after noon and my check engine light is on. I call onstar they say that I'm throwing a misfire code. So I get out make sure that all my plug wires are seated well (they were). All my mods are listed below...I guess my question is will this code go away on it's own or do I have another problem? Car seems to run just fine rev's good, I didn't drive it to work just in case though.

Camaro21 · 12-07-2011, 04:26 PM

Quote:

Originally Posted by Smoky10

I drove my car to the gas station last night, on the way home my engine light came on and all of my nanny lights also came on. I was less than a block from the house and the car was still running fine, so I just coasted to the house. Got in the driveway popped the hood and one of my grannetelli wires had popped off the coil. No worries I just plugged it back in and shoot the hood, problem solved. Well get in the car to go to work this after noon and my check engine light is on. I call onstar they say that I'm throwing a misfire code. So I get out make sure that all my plug wires are seated well (they were). All my mods are listed below...I guess my question is will this code go away on it's own or do I have another problem? Car seems to run just fine rev's good, I didn't drive it to work just in case though.

I am no expert, but from I understand the light should go out with so many drive cycles if problem doesn't exist any longer. The code should be stored in memory.

Smoky10 · 12-07-2011, 04:30 PM

I've had the same problem before with the wire popping off, but once I put the wire back on and start the car again the CEL is gone. This time I started the car a few times and it didn't go away. I guess that's why I so concerned.

Synner · 12-07-2011, 04:36 PM

Is it driving ok?
If not test the resistance of the wires. If one if partly off for long enough the wire can arc and eventually fry itself. Also the code probably didn't register and then clear since you hadn't run the car with the problem fixed yet. Also check the plug connection point on all the wires too; not just at the coil. My guess is the light went on because you did have a problem but hadn't had time to clear. If the wire condition is good, you checked the connections, and it's driving fine don't worry about it.

If it doesn't go away just go to auto zone or advance and have them clear it.

Smoky10 · 12-07-2011, 04:40 PM

Thanks Synner, I will take it to Advanced in the morning, hopefully the light will go out on the way.

steeleshark2 · 12-07-2011, 05:05 PM

Unplug the battery for 10 minutes. You have to probably reset the code. If it comes back, then you have other issues. Misfire would be likely from the unplugged wire.

Smoky10 · 12-07-2011, 05:10 PM

Hey there Dale haven't talked to you in a while. How is your car doing?

steeleshark2 · 12-07-2011, 08:23 PM

Doing very well. Did you find your issue?

Smoky10 · 12-07-2011, 10:09 PM

Still at work...I will be leaving here in a little bit and when I get home I'll unplug the battery for a bit. Hopefully that does the trick...

2L82RUN · 12-08-2011, 12:05 AM

I had the same issue after having a cam installed. 'random cylinder misfire'. Cam was causing the computer to think there was an issue when in fact none existed.

Smoky10 · 12-08-2011, 12:47 AM

Cool, thanks for all the replies, I drove it just now and the light didn't go off, so I unplugged the battery for 10 minutes and now it's gone. I guess tomorrow I will see if it comes back on.

TinyToasta · 12-08-2011, 05:29 AM

Unlikely, but worth checking since you're running LTs...

http://www.camaro5.com/forums/showthread.php?t=168380

Post #6

BLACK10 · 12-08-2011, 09:25 AM

Random misfire codes happens sometimes. Maybe a little bad gass also.

steeleshark2 · 12-08-2011, 05:02 PM

When the code sets hard, you have to reset it. I think the OP will have no more issues.

Cal 20112SS · 12-08-2011, 05:27 PM

My headers were burning one of my spark plug wires causing a rough idle. I popped the hood and saw this. I since switched to MSD wires. Problem solved.

12-07-2011, 04:25 PM	#1
Smoky10 Drives: 2010 Camaro 2SS Join Date: Jun 2010 Location: Navarre, FL Posts: 535	Misfire I drove my car to the gas station last night, on the way home my engine light came on and all of my nanny lights also came on. I was less than a block from the house and the car was still running fine, so I just coasted to the house. Got in the driveway popped the hood and one of my grannetelli wires had popped off the coil. No worries I just plugged it back in and shoot the hood, problem solved. Well get in the car to go to work this after noon and my check engine light is on. I call onstar they say that I'm throwing a misfire code. So I get out make sure that all my plug wires are seated well (they were). All my mods are listed below...I guess my question is will this code go away on it's own or do I have another problem? Car seems to run just fine rev's good, I didn't drive it to work just in case though. __________________ 2010 Camaro SS M6 Mods: 231/236 LSA 112, Vararam intake, VMAX throttle body, OBX longtube headers, TSP underdrive pulley, DSS one piece aluminum driveshaft, hurst short throw shifter. Next 3.90 gears, and hopefully I'll be finished

12-07-2011, 04:30 PM	#3
Smoky10 Drives: 2010 Camaro 2SS Join Date: Jun 2010 Location: Navarre, FL Posts: 535	I've had the same problem before with the wire popping off, but once I put the wire back on and start the car again the CEL is gone. This time I started the car a few times and it didn't go away. I guess that's why I so concerned. __________________ 2010 Camaro SS M6 Mods: 231/236 LSA 112, Vararam intake, VMAX throttle body, OBX longtube headers, TSP underdrive pulley, DSS one piece aluminum driveshaft, hurst short throw shifter. Next 3.90 gears, and hopefully I'll be finished

12-07-2011, 04:40 PM	#5
Smoky10 Drives: 2010 Camaro 2SS Join Date: Jun 2010 Location: Navarre, FL Posts: 535	Thanks Synner, I will take it to Advanced in the morning, hopefully the light will go out on the way. __________________ 2010 Camaro SS M6 Mods: 231/236 LSA 112, Vararam intake, VMAX throttle body, OBX longtube headers, TSP underdrive pulley, DSS one piece aluminum driveshaft, hurst short throw shifter. Next 3.90 gears, and hopefully I'll be finished

12-07-2011, 05:10 PM	#7
Smoky10 Drives: 2010 Camaro 2SS Join Date: Jun 2010 Location: Navarre, FL Posts: 535	Hey there Dale haven't talked to you in a while. How is your car doing? __________________ 2010 Camaro SS M6 Mods: 231/236 LSA 112, Vararam intake, VMAX throttle body, OBX longtube headers, TSP underdrive pulley, DSS one piece aluminum driveshaft, hurst short throw shifter. Next 3.90 gears, and hopefully I'll be finished

12-07-2011, 08:23 PM	#8
steeleshark2 Drives: 2010 Transformer 1SS Camaro Join Date: Nov 2009 Location: Kingsland, Ga Posts: 2,526 View My Garage	Doing very well. Did you find your issue? __________________ Build page:http://www.camaro5.com/forums/showth...77#post3083477

12-07-2011, 04:36 PM	#4
Synner Drives: 2011 2SS/RS M6 Join Date: May 2011 Location: Sandbox Posts: 2,209	Is it driving ok? If not test the resistance of the wires. If one if partly off for long enough the wire can arc and eventually fry itself. Also the code probably didn't register and then clear since you hadn't run the car with the problem fixed yet. Also check the plug connection point on all the wires too; not just at the coil. My guess is the light went on because you did have a problem but hadn't had time to clear. If the wire condition is good, you checked the connections, and it's driving fine don't worry about it. If it doesn't go away just go to auto zone or advance and have them clear it.

12-07-2011, 05:05 PM	#6
steeleshark2 Drives: 2010 Transformer 1SS Camaro Join Date: Nov 2009 Location: Kingsland, Ga Posts: 2,526 View My Garage	Unplug the battery for 10 minutes. You have to probably reset the code. If it comes back, then you have other issues. Misfire would be likely from the unplugged wire. __________________ Build page:http://www.camaro5.com/forums/showth...77#post3083477

12-07-2011, 10:09 PM	#9
Smoky10 Drives: 2010 Camaro 2SS Join Date: Jun 2010 Location: Navarre, FL Posts: 535	Still at work...I will be leaving here in a little bit and when I get home I'll unplug the battery for a bit. Hopefully that does the trick... __________________ 2010 Camaro SS M6 Mods: 231/236 LSA 112, Vararam intake, VMAX throttle body, OBX longtube headers, TSP underdrive pulley, DSS one piece aluminum driveshaft, hurst short throw shifter. Next 3.90 gears, and hopefully I'll be finished

12-08-2011, 12:05 AM	#10
2L82RUN Drives: ABM SS/RS Join Date: Sep 2009 Location: WV Posts: 574	I had the same issue after having a cam installed. 'random cylinder misfire'. Cam was causing the computer to think there was an issue when in fact none existed. __________________

12-08-2011, 12:47 AM	#11
Smoky10 Drives: 2010 Camaro 2SS Join Date: Jun 2010 Location: Navarre, FL Posts: 535	Cool, thanks for all the replies, I drove it just now and the light didn't go off, so I unplugged the battery for 10 minutes and now it's gone. I guess tomorrow I will see if it comes back on. __________________ 2010 Camaro SS M6 Mods: 231/236 LSA 112, Vararam intake, VMAX throttle body, OBX longtube headers, TSP underdrive pulley, DSS one piece aluminum driveshaft, hurst short throw shifter. Next 3.90 gears, and hopefully I'll be finished

12-08-2011, 05:29 AM	#12
TinyToasta Drives: way too fast.... Join Date: May 2010 Location: Germany Posts: 233 View My Garage	Unlikely, but worth checking since you're running LTs... http://www.camaro5.com/forums/showthread.php?t=168380 Post #6 __________________ New engine in the works / TVS2300 / Built by Henrik's Racing & Customkingz / Tuned by Jannetty Racing Kooks Headers / SLP LMII / Noweeds / CMGS Water Meth / JRE Maggie Max Stg.1 Pfadt Bushings, Arms & Rods / Pedders Supercar / HE Twin Carbon Street Slayer / DSS 1000hp Axles CTS-V Brake upgrade / Street: 22'' Vossen CV1 / Strip: 18'' Forgestar F14 on MT Street Radials http://www.camaro2010.de/

12-08-2011, 09:25 AM	#13
BLACK10 POWER TECH Drives: 2010 CAMARO. 10.04@133mph, 1.4 60' Join Date: Jul 2009 Location: Lafayette, Louisiana Posts: 4,429	Random misfire codes happens sometimes. Maybe a little bad gass also. __________________ LETHAL RACING.COM 337-258-7692 2010 CAMARO 10.04@133mph,1.4 60'on stock bottom end

12-08-2011, 05:02 PM	#14
steeleshark2 Drives: 2010 Transformer 1SS Camaro Join Date: Nov 2009 Location: Kingsland, Ga Posts: 2,526 View My Garage	When the code sets hard, you have to reset it. I think the OP will have no more issues. __________________ Build page:http://www.camaro5.com/forums/showth...77#post3083477

12-08-2011, 05:27 PM	#15
Cal 20112SS Work hard. Play Harder! Drives: 2011 2SS/RS Join Date: Jul 2010 Location: Coconut Creek, FL Posts: 1,242	My headers were burning one of my spark plug wires causing a rough idle. I popped the hood and saw this. I since switched to MSD wires. Problem solved. __________________ DOD/VVT Delete, L99 to LS3 Conversion, LSR CAI, LG Motorsport LT Headers & Exhaust, FAST 102 LSX-R Intake, FAST Billet Fuel Rails, VMAX Ported TB, VMAX Velocity Ring, DRM Oil Cap Breather, HPS Custom Comp Cam, Comp Pushrods, LS7 Lifters, LS3 Head Bolts, Patriot Extreme 600 Lift Dual Valve Springs-w Titanium Retainers, Yank 3200 Converter, Elite Engineering Tunnel Brace, DMH Electric Cutouts, Weld RTS Drag Wheels, Hoosiers up front, Mickey Thompsons for the launch. Built and tuned by Horsepower Sales of Florida. You will be missed girl! http://www.youtube.com/watch?v=uZ9ffVNg6VI

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