P2179 Code and then real rough idle - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JCO2185 · 08-11-2014, 12:40 PM

My check engine light keeps coming on, throwing P2179 code. I had Airraid intake, Elite Catch Can, BBK Long tubes with hi-flow cats, Doug Thorley catback, Trifecta tune.

I know the P2179 code is for the car running lean at idle. What i have noticed is that whenever i clear the code with my code scanner or through EZ Flash with trifecta, the next time i go to start the car, it idles extremely rough and the check engine light will flash. It even sounded like something clunking around in the exhaust. Not sure what that was, but after 5 minutes of the car idling real rough, it smoothed out. Of course the check engine light came back on after driving 20 miles.

I have heard that the Airraid intake causes the code, so i cleaned the MAF sensor. Didnt do anything and still threw the code.

Could it be the catch can? I checked all the connections and i didnt find any vacuum leaks. I dont know where else to look. Could it be something with my tune file? My car needs to get inspected soon so i need to get this figured out quickly.

sorry for the long rant!

CamaroBC · 08-12-2014, 07:47 AM

My check Engine light is one. No clue whats going on. Im going to take her in on Thursday.

JCO2185 · 08-15-2014, 08:39 PM

bump

1KillerSS · 08-18-2014, 03:54 PM

AIRAID its self shouldn't throw a code. At least mine never threw one.

When did the rough idle start? Was it soon after install? Or did it just one day start throwing a code associated with a rough idle?

JCO2185 · 08-18-2014, 04:03 PM

The P2179 code has been on for a while now. The engine only runs real rough after I clear the codes with EZFLASH. Then the code comes back...Very weird

1KillerSS · 08-18-2014, 04:20 PM

When did the code come on compared to when your mods were installed?

JCO2185 · 08-18-2014, 07:31 PM

From what I remember, the P2179 code started right around the time I put the catch can on.

JD_Alaska · 08-28-2014, 12:03 AM

What's your LTFT % at idle for bank 1 and bank 2? What's your LTFT % at say 2000 RPM for bank 1 & 2 ?

08-11-2014, 12:40 PM	#1
JCO2185 RIDING ON AIR Drives: 2010 2LT/RS Summit White Join Date: Dec 2009 Location: Long Island NY Posts: 964	P2179 Code and then real rough idle My check engine light keeps coming on, throwing P2179 code. I had Airraid intake, Elite Catch Can, BBK Long tubes with hi-flow cats, Doug Thorley catback, Trifecta tune. I know the P2179 code is for the car running lean at idle. What i have noticed is that whenever i clear the code with my code scanner or through EZ Flash with trifecta, the next time i go to start the car, it idles extremely rough and the check engine light will flash. It even sounded like something clunking around in the exhaust. Not sure what that was, but after 5 minutes of the car idling real rough, it smoothed out. Of course the check engine light came back on after driving 20 miles. I have heard that the Airraid intake causes the code, so i cleaned the MAF sensor. Didnt do anything and still threw the code. Could it be the catch can? I checked all the connections and i didnt find any vacuum leaks. I dont know where else to look. Could it be something with my tune file? My car needs to get inspected soon so i need to get this figured out quickly. sorry for the long rant! __________________ --John--2010 Camaro 2LT/RS, Summit White Air Ride Suspension, BBK Longtube Headers, Hi-Flo cats, Doug Thorley catback exhaust, Elite Catch-Can, Airraid CAI, Trifecta tune, ZL1 front end with Phantom grille, ZL1 side skirts, MRR228 graphite wheels

08-15-2014, 08:39 PM	#3
JCO2185 RIDING ON AIR Drives: 2010 2LT/RS Summit White Join Date: Dec 2009 Location: Long Island NY Posts: 964	bump __________________ --John--2010 Camaro 2LT/RS, Summit White Air Ride Suspension, BBK Longtube Headers, Hi-Flo cats, Doug Thorley catback exhaust, Elite Catch-Can, Airraid CAI, Trifecta tune, ZL1 front end with Phantom grille, ZL1 side skirts, MRR228 graphite wheels

08-18-2014, 03:54 PM	#4
1KillerSS Too much is never enough! Drives: AGP TT SS [COTW] 4/20/15 Join Date: Feb 2014 Location: Toledo,OH Posts: 4,149 View My Garage	AIRAID its self shouldn't throw a code. At least mine never threw one. When did the rough idle start? Was it soon after install? Or did it just one day start throwing a code associated with a rough idle? __________________ AGP TT kit, 54/57 Forged rotating assembly, Custom grind cam... Dual nozzle meth, ID850's, Livernois dual fuel pumps, ECS BAP, 25% UDP, 3 inch Magnaflow catback with X pipe, Mantic 9000 clutch, DSS 1000hp axles, DSS aluminum driveshaft, ZL1 rear end, solid subframe bushings, HE differential offset bushings, BMR Trailing arm, BMR toe rods, Lingenfelter LNC-2000,SJM Line Lock. 747 whp 714wtq *Build thread* http://www.camaro5.com/forums/showth...55#post8107855

08-18-2014, 04:03 PM	#5
JCO2185 RIDING ON AIR Drives: 2010 2LT/RS Summit White Join Date: Dec 2009 Location: Long Island NY Posts: 964	The P2179 code has been on for a while now. The engine only runs real rough after I clear the codes with EZFLASH. Then the code comes back...Very weird __________________ --John--2010 Camaro 2LT/RS, Summit White Air Ride Suspension, BBK Longtube Headers, Hi-Flo cats, Doug Thorley catback exhaust, Elite Catch-Can, Airraid CAI, Trifecta tune, ZL1 front end with Phantom grille, ZL1 side skirts, MRR228 graphite wheels

08-18-2014, 04:20 PM	#6
1KillerSS Too much is never enough! Drives: AGP TT SS [COTW] 4/20/15 Join Date: Feb 2014 Location: Toledo,OH Posts: 4,149 View My Garage	When did the code come on compared to when your mods were installed? __________________ AGP TT kit, 54/57 Forged rotating assembly, Custom grind cam... Dual nozzle meth, ID850's, Livernois dual fuel pumps, ECS BAP, 25% UDP, 3 inch Magnaflow catback with X pipe, Mantic 9000 clutch, DSS 1000hp axles, DSS aluminum driveshaft, ZL1 rear end, solid subframe bushings, HE differential offset bushings, BMR Trailing arm, BMR toe rods, Lingenfelter LNC-2000,SJM Line Lock. 747 whp 714wtq *Build thread* http://www.camaro5.com/forums/showth...55#post8107855

08-12-2014, 07:47 AM	#2
CamaroBC Drives: Cyber Grey 2LT RS Coupe Join Date: Feb 2011 Location: NY Posts: 757	My check Engine light is one. No clue whats going on. Im going to take her in on Thursday.

08-18-2014, 07:31 PM	#7
JCO2185 RIDING ON AIR Drives: 2010 2LT/RS Summit White Join Date: Dec 2009 Location: Long Island NY Posts: 964	From what I remember, the P2179 code started right around the time I put the catch can on. __________________ --John--2010 Camaro 2LT/RS, Summit White Air Ride Suspension, BBK Longtube Headers, Hi-Flo cats, Doug Thorley catback exhaust, Elite Catch-Can, Airraid CAI, Trifecta tune, ZL1 front end with Phantom grille, ZL1 side skirts, MRR228 graphite wheels

08-28-2014, 12:03 AM	#8
JD_Alaska Drives: 2013 Camaro SS Coupe L99 Join Date: Feb 2013 Location: North Pole Alaska Posts: 393 View My Garage	What's your LTFT % at idle for bank 1 and bank 2? What's your LTFT % at say 2000 RPM for bank 1 & 2 ?