EVAP I/M service incomplete with JRC tune - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

loves_bruins · 07-10-2017, 11:34 AM

Hello,
I'm really hoping someone with a brain can help me. My chevy mechanic certainly can't.
I have a 2010 Camaro, L99 with a recent tune from JRC. The EVAP Monitor test is still reading incomplete. It is the only one.
I've done the stupid GM drive cycle test 5 times. Does the JRC tune tune out that test? I would think not.
Please help. This stupid thing has to pass inspection as it has a clear sticker that has run out.
Thanks
/Loren

SSEssence · 07-10-2017, 11:39 AM

I would contact JRC directly for this

CamaroFred · 07-10-2017, 11:44 AM

You should be able to pass with one system not ready.

It was the evap system on my Camaro that read not ready when I passed a few months ago.

loves_bruins · 07-10-2017, 11:48 AM

@CamaroFred: I reside in "Live Free or Die" state, where ALL I/M tests have to complete if they are available.

loves_bruins · 07-10-2017, 12:13 PM

I just talked with Ted over at JRC. The tunes do not touch EVAP system or testing.

Coleroad · 07-10-2017, 01:53 PM

Can't you force the evap monitor test while in mode $6 diagnostics.

loves_bruins · 07-10-2017, 02:16 PM

@Coleroad How?

Coleroad · 07-10-2017, 02:23 PM

With the proper scan tool. Your dealer should have been able to do it for you. That's how a real technician tests his work after fixing the evap system. Not tell you to go drive it a few days and bring it back if the cel light comes back on.

ZED SLED · 07-10-2017, 02:26 PM

Did you disconnect your battery lately? This will cause the readiness info to clear. Doing the drive cycles will pass most readiness but sometimes it takes hundreds of miles for EVAP to pass. Had this happen when putting a new battery in my Avalanche 2 days before getting it inspected. After drives cycles it passed all but EVAP. But in NY we only need to pass 3/4

loves_bruins · 07-10-2017, 02:34 PM

@Coleroad, This is why I prefaced my initial request with "someone with a brain" My chevy dealership(service) had no clue what mode 6 diagnostics is. Is there a "cheap" scan tool that supports mode 6 diagnostics?
Someone recommended one that was 1100 bucks. Kinda steap.
Thanks!
/Loren

Coleroad · 07-10-2017, 02:52 PM

I would recommend the ds150. Not sure what the cost is , but is a full functioning bi directional scanner.. Delphiautoparts on YouTube has a great diagnostic series. These videos are like an hour long each, and for many different vehicle systems.

Jazzzed · 07-10-2017, 03:10 PM

The EVAP readiness definitely takes the longest to complete. During the GM drive cycle, did you do the idle for 3 minutes after a cold start with the air conditioner, rear defroster and all other electrical accessories on? How about the 3 minutes of driving at exactly 55mph? Mine completed very easily after just those two.

JerTM · 07-10-2017, 05:38 PM

In the EVAP test multiple cold starts will be required. You can't just drive around, turn the car off and start it up again. It has to see engine temp and ambient temp nearly the same to be a cold start.

Valkyrie14 · 07-05-2020, 12:35 PM

Old thread, but I have this issue. Not a emissions issue for me. I recently did an LSA blower on my LS3 and I have a new EVAP solenoid. I run HP Tuner and I have tune shop I work with locally. All is well and runs fine. Except when I check engine codes I get EVAP incomplete. No idea what the deal is or if I should be worried.

07-10-2017, 11:34 AM	#1
loves_bruins Drives: 2010 Camaro SS2 Join Date: Jun 2016 Location: Nashua NH Posts: 36	EVAP I/M service incomplete with JRC tune Hello, I'm really hoping someone with a brain can help me. My chevy mechanic certainly can't. I have a 2010 Camaro, L99 with a recent tune from JRC. The EVAP Monitor test is still reading incomplete. It is the only one. I've done the stupid GM drive cycle test 5 times. Does the JRC tune tune out that test? I would think not. Please help. This stupid thing has to pass inspection as it has a clear sticker that has run out. Thanks /Loren

07-10-2017, 11:39 AM	#2
SSEssence Instagram: Sangstah Drives: 2019 Camaro 1LE Join Date: Sep 2016 Location: Buena Park, CA. Posts: 2,799 View My Garage	I would contact JRC directly for this __________________ 2019 SS 1LE - "CaSSandra" 2014 SS - "AleSSandra - Sold" 94 Z28 - Sold Follow the build https://www.camaro6.com/forums/showthread.php?t=612717

07-10-2017, 11:44 AM	#3
CamaroFred Drives: Miss Con Ception Join Date: Aug 2016 Location: Chicagoland Posts: 2,999	You should be able to pass with one system not ready. It was the evap system on my Camaro that read not ready when I passed a few months ago. __________________ 2011 1SS/RS LS3 CGM

07-10-2017, 02:23 PM	#8
Coleroad Drives: 13 Camaro Join Date: Oct 2016 Location: Colorado Posts: 315	With the proper scan tool. Your dealer should have been able to do it for you. That's how a real technician tests his work after fixing the evap system. Not tell you to go drive it a few days and bring it back if the cel light comes back on. Attached Images

07-10-2017, 02:26 PM	#9
ZED SLED Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009 Location: South of Raleigh, NC Posts: 9,467 View My Garage	Did you disconnect your battery lately? This will cause the readiness info to clear. Doing the drive cycles will pass most readiness but sometimes it takes hundreds of miles for EVAP to pass. Had this happen when putting a new battery in my Avalanche 2 days before getting it inspected. After drives cycles it passed all but EVAP. But in NY we only need to pass 3/4 __________________

07-10-2017, 11:48 AM	#4
loves_bruins Drives: 2010 Camaro SS2 Join Date: Jun 2016 Location: Nashua NH Posts: 36	@CamaroFred: I reside in "Live Free or Die" state, where ALL I/M tests have to complete if they are available.

07-10-2017, 12:13 PM	#5
loves_bruins Drives: 2010 Camaro SS2 Join Date: Jun 2016 Location: Nashua NH Posts: 36	I just talked with Ted over at JRC. The tunes do not touch EVAP system or testing.

07-10-2017, 01:53 PM	#6
Coleroad Drives: 13 Camaro Join Date: Oct 2016 Location: Colorado Posts: 315	Can't you force the evap monitor test while in mode $6 diagnostics.

07-10-2017, 02:16 PM	#7
loves_bruins Drives: 2010 Camaro SS2 Join Date: Jun 2016 Location: Nashua NH Posts: 36	@Coleroad How?

07-10-2017, 02:34 PM	#10
loves_bruins Drives: 2010 Camaro SS2 Join Date: Jun 2016 Location: Nashua NH Posts: 36	@Coleroad, This is why I prefaced my initial request with "someone with a brain" My chevy dealership(service) had no clue what mode 6 diagnostics is. Is there a "cheap" scan tool that supports mode 6 diagnostics? Someone recommended one that was 1100 bucks. Kinda steap. Thanks! /Loren

07-10-2017, 02:52 PM	#11
Coleroad Drives: 13 Camaro Join Date: Oct 2016 Location: Colorado Posts: 315	I would recommend the ds150. Not sure what the cost is , but is a full functioning bi directional scanner.. Delphiautoparts on YouTube has a great diagnostic series. These videos are like an hour long each, and for many different vehicle systems.

07-10-2017, 03:10 PM	#12
Jazzzed Drives: 2015 Camaro LT Join Date: Sep 2016 Location: Fox Lake, IL Posts: 393	The EVAP readiness definitely takes the longest to complete. During the GM drive cycle, did you do the idle for 3 minutes after a cold start with the air conditioner, rear defroster and all other electrical accessories on? How about the 3 minutes of driving at exactly 55mph? Mine completed very easily after just those two. __________________

07-10-2017, 05:38 PM	#13
JerTM Drives: 2011 2SS/RS M6 Join Date: Oct 2015 Location: Utah Posts: 1,941	In the EVAP test multiple cold starts will be required. You can't just drive around, turn the car off and start it up again. It has to see engine temp and ambient temp nearly the same to be a cold start.

07-05-2020, 12:35 PM	#14
Valkyrie14 Valkyrie14 Drives: Chevrolet Camaro SS Join Date: Mar 2020 Location: Eau Claire, Wisconsin Posts: 962	Old thread, but I have this issue. Not a emissions issue for me. I recently did an LSA blower on my LS3 and I have a new EVAP solenoid. I run HP Tuner and I have tune shop I work with locally. All is well and runs fine. Except when I check engine codes I get EVAP incomplete. No idea what the deal is or if I should be worried. Attached Images __________________ 2014 SS LS3/LSA Supercharger, 10% Super Damper, 2.55 upper, AGP Dual Pump, ID 1050 injectors, Pegasus solid rear cradle bushings, LT Headers, Roto-Fab CAI, Elite E2 catch can, E85 corn fed, 160 Thermostat, Monster Twin Disk, MGW Short Throw shifter, Tick Clutch Master Cylinder, HP Tuners, JL Audio system.