code p1074 ideas? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

jessrayo · 11-11-2013, 10:28 AM

Okay I have a new engine with about 200 miles on it in my car, I picked it up from ADM to put some more break-in miles on it while Andy is on vacation. It ran great when I picked it up and I put about 60 miles on it with it running fine. Then it starts running rough and shows code 1074 left side O2 sensor showing lean. All of the fuel injector wiring connections seem to be plugged in and I changed the front O2 sensor. Changing the sensor seemed to make a little difference but did not fix the problem. The check engine light is not on in the dash but the code comes back in the computer even though I reset it out. I could just wait for Andy to get back but I like to think I'm not totally helpless mechanically. Any ideas?

3monkeys · 11-11-2013, 11:17 AM

My knee jerk reaction is a vaccume leak...

gen=5 · 11-11-2013, 02:53 PM

99% of the time everyone changes the sensor,without it fixing the issue..want you need to do is add a little propane to see if the o2 sensor changes trim,goes rich,then back to lean,that way you know its working..after that use a can of brake clean,make sure its the friendly type so it wont leave any nasty color changes on anything,look at the reading on your scanner to see if it goes rich,and listen for a change in rpm,when you here the rpm change,and the readings go rich,you will find your vac leak !!!
also you can look at your injectors if you have a injector light plug it in to see if the computer is commanding on/off, after that use a scope and place it on each injector to see if you hear the injector working !!! that should help you track down the issue,good luck let me know if i can help you in anyway ! I turn a wrench on and off for 20yrs before being wheelchair bound !!

Stephen12ZL1 · 11-11-2013, 03:39 PM

P0174 or P1074?

Stephen12ZL1 · 11-11-2013, 03:44 PM

intake leak, vacuum leak, pcv...basically any "phantom" air leak. Even an exhaust leak near the 02 sensor can do it.

jessrayo · 11-11-2013, 04:59 PM

Quote:

Originally Posted by 3monkeys

My knee jerk reaction is a vaccume leak...

Any ideas where I could have a vacuum leak suddenly appear, that was not there originally.

Quote:

Originally Posted by Stephen12ZL1

P0174 or P1074?

My reader says P1074 but the I have seen that other readers transpose the first 2 digits.

Quote:

Originally Posted by gen=5

99% of the time everyone changes the sensor,without it fixing the issue..want you need to do is add a little propane to see if the o2 sensor changes trim,goes rich,then back to lean,that way you know its working..after that use a can of brake clean,make sure its the friendly type so it wont leave any nasty color changes on anything,look at the reading on your scanner to see if it goes rich,and listen for a change in rpm,when you here the rpm change,and the readings go rich,you will find your vac leak !!!
also you can look at your injectors if you have a injector light plug it in to see if the computer is commanding on/off, after that use a scope and place it on each injector to see if you hear the injector working !!! that should help you track down the issue,good luck let me know if i can help you in anyway ! I turn a wrench on and off for 20yrs before being wheelchair bound !!

I think this is a little deeper than I care to go myself at this time.....

I just had a revelation. Andy swapped my blower because it was making more noise than it should have been and I know the 2.3 blower he swapped on my car had been plumbed for nitrous. If I can figure out the Nitrous plumbing I'm sure I'll find a vacuum leak.

Thanks for all of the help guys!

jessrayo · 11-11-2013, 05:13 PM

Where would you inject nitrous on one of these beasts...lol? I'm thinking in the intake right in front of the heads but I really have no idea....

Sugar's ZL1 · 11-12-2013, 06:20 AM

Hi Jess,
Just take it back to Andy and get some nitrous bottles. Use them for the strip!

LuckyZL-1 · 11-12-2013, 07:18 AM

Quote:

Originally Posted by jessrayo

Where would you inject nitrous on one of these beasts...lol? I'm thinking in the intake right in front of the heads but I really have no idea....

I believe that the nitrous guys that use Andy's setup use that "bar" setup underneath the blower. I saw one at his shop but it works on the pressure side not the vacuum side. I would get a flashlight and check all hose connectors if I were you I've done it before on a friends car and we found one that wasn't seated all the the way. Goodluck!

mylftft · 11-12-2013, 07:33 AM

The 1.9 blowers have a machined direct port bar system, the 2.3 blowers run a dry shot into the intake tube before the throttle body. I guarantee its not caused from the blower or the nitrous system that was plumbed into a different intake tube.

Stephen12ZL1 · 11-12-2013, 07:58 AM

easy trick....while the car is idling, take a can of intake/carb cleaner and spray gently near vacuum lines or intake area and see if the idle speed rises or surges. You can find any phantom air leak this way.

jessrayo · 11-12-2013, 09:25 AM

Quote:

Originally Posted by mylftft

The 1.9 blowers have a machined direct port bar system, the 2.3 blowers run a dry shot into the intake tube before the throttle body. I guarantee its not caused from the blower or the nitrous system that was plumbed into a different intake tube.

You got this right, there is absolutely no sign of any changes to the blower or manifold on the 2.3.

Quote:

Originally Posted by LuckyZL-1

I believe that the nitrous guys that use Andy's setup use that "bar" setup underneath the blower. I saw one at his shop but it works on the pressure side not the vacuum side. I would get a flashlight and check all hose connectors if I were you I've done it before on a friends car and we found one that wasn't seated all the the way. Goodluck!

I spent 2 hours last night tugging on hoses and wires and shining lights and clearing codes and got no where...lol. But we do think alike....lol.

Quote:

Originally Posted by Stephen12ZL1

easy trick....while the car is idling, take a can of intake/carb cleaner and spray gently near vacuum lines or intake area and see if the idle speed rises or surges. You can find any phantom air leak this way.

I guess it is time to spray.... so far I have suggestions for brake fluid and carb cleaner, both dissipate well and clean, I don't know which would have a more dramatic effect on engine idle, perhaps ether starting fluid would work also.... It is probably the main ingredient in both of those cleaners.

Quote:

Originally Posted by Sugar's ZL1

Hi Jess,
Just take it back to Andy and get some nitrous bottles. Use them for the strip!

This car is already pretty scarey... but I like the idea.....

ZL1-V · 11-12-2013, 12:39 PM

Spraying the area usually works to find a vacuum leak. It just takes a bit of time in locating it. Or just wait until Andy returns, which probably will feel like forever.

ADM PERFORMANCE · 11-16-2013, 07:36 AM

Quote:

Originally Posted by ZL1-V

Spraying the area usually works to find a vacuum leak. It just takes a bit of time in locating it. Or just wait until Andy returns, which probably will feel like forever.

Just hit land , Jess get the car back down will see
What changed .

The blower head units were identical with one swapped
And new gaskets were used and riveted I place correctly.

Our nitrous spraybar is in the INTERCOOLER top on the ZR1 lids.

Jess has his same lid.

11-11-2013, 10:28 AM	#1
jessrayo Speed Freak Drives: 2013 ZL1 Camaro, 2016 Camaro SS Join Date: Jun 2013 Location: Ardmore, OK Posts: 2,637 View My Garage	code p1074 ideas? Okay I have a new engine with about 200 miles on it in my car, I picked it up from ADM to put some more break-in miles on it while Andy is on vacation. It ran great when I picked it up and I put about 60 miles on it with it running fine. Then it starts running rough and shows code 1074 left side O2 sensor showing lean. All of the fuel injector wiring connections seem to be plugged in and I changed the front O2 sensor. Changing the sensor seemed to make a little difference but did not fix the problem. The check engine light is not on in the dash but the code comes back in the computer even though I reset it out. I could just wait for Andy to get back but I like to think I'm not totally helpless mechanically. Any ideas? __________________ 2016 SS -AGP twin Borg Warner 7163 EFR's, LT4 mechanical pump, LT4 injectors, Walbro 255 low side, Castrol SRF. 734whp/759 tq 2013 ZL1 -ADM - 427 LSX 6 bolt, O-ringed block built by LME. Twin PT6466 turbos. RPM custom manual trans, RPS Quad carbon clutch, 9" Hendrix rear diff & axles. ADM/squash fuel system, Ron Davis radiator, Spal fans, AGP air to air, turbo plumbing. LPE oil cooler, rear bushing upgrade, roll bar...etc. rwhp 1400+... 212.5mph, best Texas mile to date.

11-11-2013, 02:53 PM	#3
gen=5 Drives: 13 ZL1 vert blac fastlane/LPE 750 Join Date: Jul 2011 Location: houston Posts: 1,312 View My Garage	99% of the time everyone changes the sensor,without it fixing the issue..want you need to do is add a little propane to see if the o2 sensor changes trim,goes rich,then back to lean,that way you know its working..after that use a can of brake clean,make sure its the friendly type so it wont leave any nasty color changes on anything,look at the reading on your scanner to see if it goes rich,and listen for a change in rpm,when you here the rpm change,and the readings go rich,you will find your vac leak !!! also you can look at your injectors if you have a injector light plug it in to see if the computer is commanding on/off, after that use a scope and place it on each injector to see if you hear the injector working !!! that should help you track down the issue,good luck let me know if i can help you in anyway ! I turn a wrench on and off for 20yrs before being wheelchair bound !! __________________ http://www.camaro5.com/forums/showthread.php?t=346589 CHECK OUT THE BUILDING OF MY RANCH FOR DISABLED VETS, COMPLETE WITH A GUN RANGE .

11-11-2013, 03:39 PM	#4
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,808	P0174 or P1074? __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

11-11-2013, 03:44 PM	#5
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,808	intake leak, vacuum leak, pcv...basically any "phantom" air leak. Even an exhaust leak near the 02 sensor can do it. __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

11-11-2013, 05:13 PM	#7
jessrayo Speed Freak Drives: 2013 ZL1 Camaro, 2016 Camaro SS Join Date: Jun 2013 Location: Ardmore, OK Posts: 2,637 View My Garage	Where would you inject nitrous on one of these beasts...lol? I'm thinking in the intake right in front of the heads but I really have no idea.... __________________ 2016 SS -AGP twin Borg Warner 7163 EFR's, LT4 mechanical pump, LT4 injectors, Walbro 255 low side, Castrol SRF. 734whp/759 tq 2013 ZL1 -ADM - 427 LSX 6 bolt, O-ringed block built by LME. Twin PT6466 turbos. RPM custom manual trans, RPS Quad carbon clutch, 9" Hendrix rear diff & axles. ADM/squash fuel system, Ron Davis radiator, Spal fans, AGP air to air, turbo plumbing. LPE oil cooler, rear bushing upgrade, roll bar...etc. rwhp 1400+... 212.5mph, best Texas mile to date.

11-11-2013, 11:17 AM	#2
3monkeys Drives: 2013 ZL1 Camaro Join Date: Jul 2013 Location: Little Elm Tx Posts: 30	My knee jerk reaction is a vaccume leak...

11-12-2013, 06:20 AM	#8
Sugar's ZL1 Ron and Sugar Drives: 2013 Black ZL1 Vert A6 Join Date: May 2013 Location: DFW Posts: 108	Hi Jess, Just take it back to Andy and get some nitrous bottles. Use them for the strip! __________________ I Love My 08 Pek a Poo Last edited by Sugar's ZL1; 11-13-2013 at 09:01 AM.

11-12-2013, 07:33 AM	#10
mylftft Drives: 2013 TT ZL1 Join Date: Jun 2013 Location: NorCal Posts: 849	The 1.9 blowers have a machined direct port bar system, the 2.3 blowers run a dry shot into the intake tube before the throttle body. I guarantee its not caused from the blower or the nitrous system that was plumbed into a different intake tube. __________________

11-12-2013, 07:58 AM	#11
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,808	easy trick....while the car is idling, take a can of intake/carb cleaner and spray gently near vacuum lines or intake area and see if the idle speed rises or surges. You can find any phantom air leak this way. __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

11-12-2013, 12:39 PM	#13
ZL1-V Drives: 2013 Camaro ZL1 Join Date: Dec 2012 Location: Dallas, Texas Posts: 2,155	Spraying the area usually works to find a vacuum leak. It just takes a bit of time in locating it. Or just wait until Andy returns, which probably will feel like forever.