Stealer Service Issue - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JohnJr · 03-03-2014, 04:47 PM

I recently got a CEL with P0171 and P0174 (left/right bank lean) and took it to my dealer for repair. I've got a CAI and it has run without issue for the past 18 months. I've also got a ported throttle body. I get a call from them saying they cannot proceed with any troubleshooting without having the stock intake back on. All their GM guidance lists this as the first step in resolving the issue. I asked them to check the MAF sensor and they said it is good. Does this sound right or should I take it elsewhere?

maddoggyusa · 03-03-2014, 05:09 PM

I know you can get those codes if you have vacuum or intake leaks. I think you can rule out bad o2 sensors and cats since it's both banks. a bad MAF is another possibility. Did you try cleaning the MAF?

is your tune stock or custom? is it possible that you're flow has improved to the point that the stock tune cannot add enough fuel? that is basically what the codes are saying... the proper air/fuel mix is beyond the expected range and car is running too lean.

another idea... did you initially recalibrate the throttle body (so it knows the idle voltage)? I know you have to do this when replacing the throttle body. I replaced a stock throttle body and had issues until I recalibrated.

JohnJr · 03-03-2014, 05:15 PM

Stock tune. I'll clean the MAF and see what happens. Just wondering why the dealer is unable to proceed without the stock airbox.

nyrfan · 03-03-2014, 05:18 PM

Does not sound wrong. If you want it to be covered under warranty I'd expect them to want the car as stock as possible. Just put the stock intake back on as it takes all of 10 minutes.

Sent from my AGM, 2SS/RS

Flightwolf · 03-03-2014, 05:29 PM

Quote:

Originally Posted by maddoggyusa

I know you can get those codes if you have vacuum or intake leaks. I think you can rule out bad o2 sensors and cats since it's both banks. a bad MAF is another possibility. Did you try cleaning the MAF?

is your tune stock or custom? is it possible that you're flow has improved to the point that the stock tune cannot add enough fuel? that is basically what the codes are saying... the proper air/fuel mix is beyond the expected range and car is running too lean.

another idea... did you initially recalibrate the throttle body (so it knows the idle voltage)? I know you have to do this when replacing the throttle body. I replaced a stock throttle body and had issues until I recalibrated.

I would guess the ported throttle body is the culprit. I've been under the impression that you need a tune after this mod.

Frank in MD · 03-04-2014, 04:51 PM

Quote:

Originally Posted by Flightwolf

I would guess the ported throttle body is the culprit. I've been under the impression that you need a tune after this mod.

That's a big part of it, I think maddoggyusa nailed it.

nyrfan · 03-04-2014, 04:54 PM

Quote:

Originally Posted by Flightwolf

I would guess the ported throttle body is the culprit. I've been under the impression that you need a tune after this mod.

A tune is 100% not needed after a TB.

Sent from my AGM, 2SS/RS

elarson5757 · 03-04-2014, 10:45 PM

With no real significant mechanical upgrades like a cam, heads, etc there is no need for a tune as nyrfan said. The real problem is you have a service department that is no better than following a check list that starts with checking the air intake for a blockage or dirty filter, etc so do yourself a favor and RUN to a different dealer....

JohnJr · 03-05-2014, 01:51 AM

That's what I suspected. Any technician worth their weight should be able to apply their experience and some common sense to fix a problem. On a side note, when I picked my car up, they scratched the fender near the hood. Right about belt buckle height. I also asked to get my PDIM software updated and they said "No problem." I plugged my phone into the USB port when I got home and the radio won't respond at all.

03-03-2014, 04:47 PM	#1
JohnJr Retired USAF Drives: 2011 2SS A6 RJT Join Date: Jul 2011 Location: Spanaway, WA Posts: 46 View My Garage	Stealer Service Issue I recently got a CEL with P0171 and P0174 (left/right bank lean) and took it to my dealer for repair. I've got a CAI and it has run without issue for the past 18 months. I've also got a ported throttle body. I get a call from them saying they cannot proceed with any troubleshooting without having the stock intake back on. All their GM guidance lists this as the first step in resolving the issue. I asked them to check the MAF sensor and they said it is good. Does this sound right or should I take it elsewhere? __________________ Volant CAI, CNT catback exhaust, Ported Throttle Body, RX Catch Can, Heritage Grille, Tinted Windows, Oracle Halo Fog Lights, 3rd Brake Light Flasher, Rear LED bowtie, Frameless Rear-View Mirror.

03-03-2014, 05:15 PM	#3
JohnJr Retired USAF Drives: 2011 2SS A6 RJT Join Date: Jul 2011 Location: Spanaway, WA Posts: 46 View My Garage	Stock tune. I'll clean the MAF and see what happens. Just wondering why the dealer is unable to proceed without the stock airbox. __________________ Volant CAI, CNT catback exhaust, Ported Throttle Body, RX Catch Can, Heritage Grille, Tinted Windows, Oracle Halo Fog Lights, 3rd Brake Light Flasher, Rear LED bowtie, Frameless Rear-View Mirror.

03-03-2014, 05:18 PM	#4
nyrfan Let's go Rangers! Drives: 13' AGM 2SS/RS L99 Join Date: Jun 2011 Location: Orlando, FL Posts: 10,742 View My Garage	Stealer Service Issue Does not sound wrong. If you want it to be covered under warranty I'd expect them to want the car as stock as possible. Just put the stock intake back on as it takes all of 10 minutes. Sent from my AGM, 2SS/RS __________________ Soprano 4/1/00-6/14/11, Gone but NEVER forgotten! FSP tuned: 377/389 Last edited by nyrfan; 03-03-2014 at 05:30 PM.

03-05-2014, 01:51 AM	#9
JohnJr Retired USAF Drives: 2011 2SS A6 RJT Join Date: Jul 2011 Location: Spanaway, WA Posts: 46 View My Garage	That's what I suspected. Any technician worth their weight should be able to apply their experience and some common sense to fix a problem. On a side note, when I picked my car up, they scratched the fender near the hood. Right about belt buckle height. I also asked to get my PDIM software updated and they said "No problem." I plugged my phone into the USB port when I got home and the radio won't respond at all. __________________ Volant CAI, CNT catback exhaust, Ported Throttle Body, RX Catch Can, Heritage Grille, Tinted Windows, Oracle Halo Fog Lights, 3rd Brake Light Flasher, Rear LED bowtie, Frameless Rear-View Mirror.

03-03-2014, 05:09 PM	#2
maddoggyusa Drives: 2013 Camaro Dusk 2SS/6 Join Date: Sep 2013 Location: New Jersey Posts: 1,586	I know you can get those codes if you have vacuum or intake leaks. I think you can rule out bad o2 sensors and cats since it's both banks. a bad MAF is another possibility. Did you try cleaning the MAF? is your tune stock or custom? is it possible that you're flow has improved to the point that the stock tune cannot add enough fuel? that is basically what the codes are saying... the proper air/fuel mix is beyond the expected range and car is running too lean. another idea... did you initially recalibrate the throttle body (so it knows the idle voltage)? I know you have to do this when replacing the throttle body. I replaced a stock throttle body and had issues until I recalibrated.

03-04-2014, 10:45 PM	#8
elarson5757 Obsessed and Loving It... Drives: 2013 1LE-SS Join Date: Jun 2013 Location: Saginaw, MI Posts: 524	With no real significant mechanical upgrades like a cam, heads, etc there is no need for a tune as nyrfan said. The real problem is you have a service department that is no better than following a check list that starts with checking the air intake for a blockage or dirty filter, etc so do yourself a favor and RUN to a different dealer....