370z HELP

Bigchillin · 03-08-2018, 09:33 AM

I'm kind of clueless now. I need your guys' help.

I have a 2010 370z Twin Turbo with about 35k miles. Car has been running great. Recently replaced clutch and flywheel. All maintenance has been performed on time as well.

Details:

Recently, car has been sputtering, feels like misfire. Pop coming out of the exhaust when driving and can actually hear the sputter just during idle. Car threw a cel. It was P2A00. Bank 1 Air fuel sensor 1. In all, it drives rough now and has complete loss of power. I've checked the coils and the plugs. I'm doing a compression test later to find out if it can be a valve or piston. Any other ideas?

Thanks a ton guys

Chuck33079 · 03-08-2018, 09:35 AM

Did you replace the sensor the code pointed you toward? A new O2 sensor could conceivably cause everything you've described.

Dirk McGurck · 03-08-2018, 09:36 AM

I would check to make sure all sensors are plugged all the way in/threaded all the way. Also, check all hoses.

Bigchillin · 03-08-2018, 09:48 AM

The previous owner replaced the sensor, that sensor is newer than my other ones.

Chuck33079 · 03-08-2018, 09:57 AM

O2 sensors can go bad. It's cheaper and easier to replace that and see if the problems go away than going too much further down the rabbit hole.

SouthArk370Z · 03-08-2018, 10:06 AM

An exhaust leak can throw a P2A00.

Spooler · 03-08-2018, 11:12 AM

Quote:

Originally Posted by SouthArk370Z

An exhaust leak can throw a P2A00.

Yeap, What TT kit is it? If it is a GTM kit they are known for cracking exhaust
manifolds.

Chuck33079 · 03-08-2018, 11:19 AM

Did this happen after the clutch install? There's a crank position sensor tucked up behind the downpipe that gets crispy with the turbo heat, and can easily be fubar'd during the clutch install.

Hotrodz · 03-08-2018, 12:43 PM

I fried my crank sensor and the car would not start at all. What are your afr's doing? It could be a bad injector. What tunning package do you have? If you have ecutek you can check to see if it is an injector by disabling each cylinder in sequence. You disable cylinder 1 and it should run like it is on 5 cylinders, then enable 1 and disable 2 and so on. If you disable a cylinder and there is no change in the way the motor is running then that is your bad cylinder or injector. This also happened to me and the car ran as you have described.

Sent from my SM-N910P using Tapatalk

Bigchillin · 03-08-2018, 01:20 PM

Thanks for all the advice. Please keep them coming.

I am running the GTM kit. I do have a leak coming from my catalytic converter. Once I pass emissions I’m going to get test pipes. I have an Uprev tune so I can’t try the ECUtek way but checking the injectors is my next step. If it was my guess it could be something fuel related or a cracked exhaust manifold.

Bigchillin · 03-08-2018, 01:22 PM

My air fuel ratios are showing that I’m running lean on heavy throttle. I’m also going to check my crank position sensor.

Chuck33079 · 03-08-2018, 01:29 PM

Fix the exhaust leak and get a new 02 sensor first. That's the most likely reason for what you're dealing with.

Edit - are you running stock cats? They could be plugged up. They don't like turbos.

Bigchillin · 03-08-2018, 01:30 PM

Also, from what my mechanic is saying is that it's isolated to one cylinder which is cylinder 1. Something is going on with that cylinder.

Bigchillin · 03-08-2018, 01:30 PM

Will do man! Thanks Chuck.

Bigchillin · 03-08-2018, 01:46 PM

Yessir stock cats. Can’t wait to get rid of them!

03-08-2018, 09:33 AM	#1 (permalink)
Bigchillin Base Member Join Date: Dec 2016 Location: Baltimore Posts: 32 Drives: 2010 370z TT Rep Power: 9	370z HELP I'm kind of clueless now. I need your guys' help. I have a 2010 370z Twin Turbo with about 35k miles. Car has been running great. Recently replaced clutch and flywheel. All maintenance has been performed on time as well. Details: Recently, car has been sputtering, feels like misfire. Pop coming out of the exhaust when driving and can actually hear the sputter just during idle. Car threw a cel. It was P2A00. Bank 1 Air fuel sensor 1. In all, it drives rough now and has complete loss of power. I've checked the coils and the plugs. I'm doing a compression test later to find out if it can be a valve or piston. Any other ideas? Thanks a ton guys

03-08-2018, 09:35 AM	#2 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	Did you replace the sensor the code pointed you toward? A new O2 sensor could conceivably cause everything you've described. Dirk McGurck likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

03-08-2018, 09:36 AM	#3 (permalink)
Dirk McGurck Track Member Join Date: Jun 2014 Location: Delaware Posts: 715 Drives: 09 MB 370Z Touring Rep Power: 21	I would check to make sure all sensors are plugged all the way in/threaded all the way. Also, check all hoses. __________________ 2009 370Z Touring with Sport

03-08-2018, 09:57 AM	#5 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	O2 sensors can go bad. It's cheaper and easier to replace that and see if the problems go away than going too much further down the rabbit hole. ColtronZ likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

03-08-2018, 10:06 AM	#6 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	An exhaust leak can throw a P2A00. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

03-08-2018, 09:48 AM	#4 (permalink)
Bigchillin Base Member Join Date: Dec 2016 Location: Baltimore Posts: 32 Drives: 2010 370z TT Rep Power: 9	The previous owner replaced the sensor, that sensor is newer than my other ones.

03-08-2018, 11:19 AM	#8 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	Did this happen after the clutch install? There's a crank position sensor tucked up behind the downpipe that gets crispy with the turbo heat, and can easily be fubar'd during the clutch install. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

03-08-2018, 12:43 PM	#9 (permalink)
Hotrodz A True Z Fanatic Join Date: Aug 2012 Location: NW, AZ Posts: 9,330 Drives: 10 Nissan 370z Nismo Rep Power: 2684385	I fried my crank sensor and the car would not start at all. What are your afr's doing? It could be a bad injector. What tunning package do you have? If you have ecutek you can check to see if it is an injector by disabling each cylinder in sequence. You disable cylinder 1 and it should run like it is on 5 cylinders, then enable 1 and disable 2 and so on. If you disable a cylinder and there is no change in the way the motor is running then that is your bad cylinder or injector. This also happened to me and the car ran as you have described. Sent from my SM-N910P using Tapatalk __________________ *Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:\|Fast Intentions 3" TT-TDX*\|SpecialtyZ/Fast Intentions 72 Row Oil Cooler\|SZ 6 Puck Clutch & Flywheel\|3GsCustoms\|Z1\|Wavetrac\|Hotchkis\|Whiteline \|Blitz\|Fortune Auto 500\|Fujimura\|SPL\|H&R\|TK\|TWM\|RPM Rollbar\|Sparco\|Next Level Performance\|TrackSpec\|AeroFlow Dynamics\|Pioneer\|

03-08-2018, 01:20 PM	#10 (permalink)
Bigchillin Base Member Join Date: Dec 2016 Location: Baltimore Posts: 32 Drives: 2010 370z TT Rep Power: 9	Thanks for all the advice. Please keep them coming. I am running the GTM kit. I do have a leak coming from my catalytic converter. Once I pass emissions I’m going to get test pipes. I have an Uprev tune so I can’t try the ECUtek way but checking the injectors is my next step. If it was my guess it could be something fuel related or a cracked exhaust manifold.

03-08-2018, 01:22 PM	#11 (permalink)
Bigchillin Base Member Join Date: Dec 2016 Location: Baltimore Posts: 32 Drives: 2010 370z TT Rep Power: 9	My air fuel ratios are showing that I’m running lean on heavy throttle. I’m also going to check my crank position sensor. Bill likes this.

03-08-2018, 01:29 PM	#12 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	Fix the exhaust leak and get a new 02 sensor first. That's the most likely reason for what you're dealing with. Edit - are you running stock cats? They could be plugged up. They don't like turbos. wideglideleon likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent Last edited by Chuck33079; 03-08-2018 at 01:31 PM.

03-08-2018, 01:30 PM	#13 (permalink)
Bigchillin Base Member Join Date: Dec 2016 Location: Baltimore Posts: 32 Drives: 2010 370z TT Rep Power: 9	Also, from what my mechanic is saying is that it's isolated to one cylinder which is cylinder 1. Something is going on with that cylinder.

03-08-2018, 01:30 PM	#14 (permalink)
Bigchillin Base Member Join Date: Dec 2016 Location: Baltimore Posts: 32 Drives: 2010 370z TT Rep Power: 9	Will do man! Thanks Chuck.

03-08-2018, 01:46 PM	#15 (permalink)
Bigchillin Base Member Join Date: Dec 2016 Location: Baltimore Posts: 32 Drives: 2010 370z TT Rep Power: 9	Yessir stock cats. Can’t wait to get rid of them!