Throwing Code PO170. - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Pkeen · 04-06-2021, 05:11 PM

Hey all,
I was driving today and my ck engine light came on. Ran the codes and came up with PO170 and its blubbering at idle, running rich as heck ran me out of the garage its so strong. Its a 416 stroker with the stock intake , injectors and tb. that had 160,000 mi on them. So im thinking a stuck injector , gona pull the plugs and have a look at them when cools off.
If i replace the injectors and go larger do i need to retune, if so i may go back with stock? Appreciate any info!

Pat

Pkeen · 04-08-2021, 11:59 AM

Dynosteve answered my question,thx.

Pkeen · 04-26-2021, 05:37 PM

Ok , i don't have an injector issue. The weird thing is it runs great until i turn on the ac and then it immediately starts running ruff , idle stays at same rpm but car rocks side to side at idle and will set ck engine light after driving a short while, and throws code PO170 ! If i turn ac off it goes back to normal ! Did my tuner miss something, any ideas ?

Pkeen · 04-30-2021, 08:48 PM

Nobody has any ideas?

AlanRubin · 05-01-2021, 01:49 AM

If that happens only when you turn the A/C on, try relearning the idle.

Pkeen · 05-01-2021, 06:23 PM

How is that done?

JLGO · 05-02-2021, 04:13 PM

Vacuum leak?

Pkeen · 05-02-2021, 09:21 PM

Only vac line I can think of is brake booster and it's not leaking. But if there was a vacuum leak why would it only affect it when the ac is on.

Pkeen · 05-04-2021, 06:56 PM

Problems been solved , my tuner found an apparent overlooked issue with the idle fuel trim. I don't know the specifics but it took care of the issue with the ac on as well as it now comes down to idle when coming to a stop instead of fluctuating from 1000 -1200 rpm until I come to a complete stop.
Anyway thanks to all for the input!

04-06-2021, 05:11 PM	#1
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 247	Throwing Code PO170. Hey all, I was driving today and my ck engine light came on. Ran the codes and came up with PO170 and its blubbering at idle, running rich as heck ran me out of the garage its so strong. Its a 416 stroker with the stock intake , injectors and tb. that had 160,000 mi on them. So im thinking a stuck injector , gona pull the plugs and have a look at them when cools off. If i replace the injectors and go larger do i need to retune, if so i may go back with stock? Appreciate any info! Pat __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq. Last edited by Pkeen; 04-08-2021 at 11:59 AM. Reason: Add info

04-08-2021, 11:59 AM	#2
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 247	Dynosteve answered my question,thx. __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.

04-26-2021, 05:37 PM	#3
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 247	Ok , i don't have an injector issue. The weird thing is it runs great until i turn on the ac and then it immediately starts running ruff , idle stays at same rpm but car rocks side to side at idle and will set ck engine light after driving a short while, and throws code PO170 ! If i turn ac off it goes back to normal ! Did my tuner miss something, any ideas ? __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.

04-30-2021, 08:48 PM	#4
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 247	Nobody has any ideas? __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.

05-01-2021, 06:23 PM	#6
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 247	How is that done? __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.

05-01-2021, 01:49 AM	#5
AlanRubin Banned Drives: 2010 LS Join Date: Feb 2021 Location: Pgh Posts: 411	If that happens only when you turn the A/C on, try relearning the idle.

05-02-2021, 04:13 PM	#7
JLGO Drives: 2015 Camaro SS convertible L99 Join Date: Nov 2016 Location: Orlando, FL Posts: 245	Vacuum leak? __________________ Corsa CAI w/Donalson Power Filter, BBK 1 7/8 headers, MF resonator, custom exhaust with Legato mufflers, mildly ported heads, TSP VVT 3.2 cam (whole package), 3.91 1LE gears, Circle D 3200 stall torque converter, B&M power cooler tranny cooler. Tuned by Casey TSP's tuner. 1/4 12.16 117mph with stock tires at 20 psi.

05-02-2021, 09:21 PM	#8
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 247	Only vac line I can think of is brake booster and it's not leaking. But if there was a vacuum leak why would it only affect it when the ac is on. __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.

05-04-2021, 06:56 PM	#9
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 247	Problems been solved , my tuner found an apparent overlooked issue with the idle fuel trim. I don't know the specifics but it took care of the issue with the ac on as well as it now comes down to idle when coming to a stop instead of fluctuating from 1000 -1200 rpm until I come to a complete stop. Anyway thanks to all for the input! __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.