Unable to hold idle. - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

CSG Mike · 05-17-2013, 06:58 PM

Has anyone else had this? Engine is 100% stock.

[ame="http://www.youtube.com/watch?v=450Pov98STg"]BRZ bad idle + misfire, no CEL, stock engine - YouTube[/ame]

mattles · 05-17-2013, 07:06 PM

mine only seems to do it when its hot out and Im running the a/c. Definitely something you should have a dealership look at for warranty work. Ive been too lazy to take mine in though.

Ninjin · 05-17-2013, 07:14 PM

I've been fortunate to only have an idle dip issue when there was a small leak in my pcv system after installing a catch can (ID10T error

).

The video seems to show the symptoms described as part of the infamous P0019 cel issue, just without the actual cel so far.

Assuming this is your BRZ, you've had it for a while, has it ever had the ecu reflash?

abutterman · 05-17-2013, 07:20 PM

mine will do it but not that frequent; maybe once while i'm stopped. I do always have the auto climate control on though so that could be contributing to it

CSG Mike · 05-17-2013, 07:26 PM

This was happening somewhat permanently, and is much more extreme than the idle dip that was happening previously.

You can actually hear a misfire most of the times when the RPMs dip, and the jump up is fairly large.

The previous idle issue happened once every ~15-20 seconds, and it was fairly quick. This is consistent, and constantly fluctuates, almost like a cammed civic, but with a slower oscillation.

OrbitalEllipses · 05-17-2013, 07:33 PM

Quote:

Originally Posted by CSG Mike

This was happening somewhat permanently, and is much more extreme than the idle dip that was happening previously.

You can actually hear a misfire most of the times when the RPMs dip, and the jump up is fairly large.

The previous idle issue happened once every ~15-20 seconds, and it was fairly quick. This is consistent, and constantly fluctuates, almost like a cammed civic, but with a slower oscillation.

This is your second engine?

Lonewolf · 05-17-2013, 09:44 PM

The CEL is coming, its just a matter of time. Do you have a scan tool/datalogger to see what is going on with the car when the idle jumps/drops and the knock occurs?

What are you guys doing to those motors at CSG (this could be number three, right?) pissing in the gas tank?

vubaru · 05-17-2013, 11:37 PM

The only thing it's missing is the idle shaking/shuddering...couldn't tell from the video.

When it CELs, take it to the dealer and leave it there until they're done with it.

wbsrazzle · 05-18-2013, 08:16 PM

Take it in to the dealer asap man, get your ecu flashed there to the latest.

dsgerbc · 05-18-2013, 08:19 PM

Quote:

Originally Posted by Lonewolf

The CEL is coming, its just a matter of time. Do you have a scan tool/datalogger to see what is going on with the car when the idle jumps/drops and the knock occurs?

What are you guys doing to those motors at CSG (this could be number three, right?) pissing in the gas tank?

I have this from day one, at some level of engine load at idle (typically the A/C, or heater, or headlights). I'm at 1yr/16k miles. I'm not sure there's a misfire. If there were, it'd throw a code.

Lonewolf · 05-18-2013, 08:42 PM

Quote:

Originally Posted by dsgerbc

I have this from day one, at some level of engine load at idle (typically the A/C, or heater, or headlights). I'm at 1yr/16k miles. I'm not sure there's a misfire. If there were, it'd throw a code.

You've never had a CEL? That's nuts. Perhaps a little bit of misfire is within the engine's paramters?

Then again, I don't completely understand the nuances of newfangled direct injection fueling, timing, and spark tables, or the variable everything that seems to be on motors these days. Sometimes I miss the simplicity of working on my dad's 66 Mustang.

It just seems like the car is missing. That's why I would love to see some logs at various loads and at idle...

dsgerbc · 05-18-2013, 08:58 PM

Quote:

Originally Posted by Lonewolf

You've never had a CEL?

Nope. I think the CEL comes on when revs dip to like 400, mine stay above 500.

Mikem53 · 05-19-2013, 08:44 AM

Quote:

Originally Posted by CSG Mike

This was happening somewhat permanently, and is much more extreme than the idle dip that was happening previously.

You can actually hear a misfire most of the times when the RPMs dip, and the jump up is fairly large.

The previous idle issue happened once every ~15-20 seconds, and it was fairly quick. This is consistent, and constantly fluctuates, almost like a cammed civic, but with a slower oscillation.

what is the build date on your car.. Mine is a feb 2013 build date on the door.. and I dont have that issue.. I think u need to get the latest ECU update. You might also have that issue with the injector seals being damaged. I read somebody else had a similar misfire and that was the issue.. You need to take it in.. unfortunately..

ntron1 · 05-19-2013, 09:59 AM

TPMS light is on. If this is not real then it is one of the indicators of an ECU problem.

05-17-2013, 06:58 PM	#1
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,542 Thanks: 8,931 Thanked 14,190 Times in 6,840 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	Unable to hold idle. Has anyone else had this? Engine is 100% stock. [ame="http://www.youtube.com/watch?v=450Pov98STg"]BRZ bad idle + misfire, no CEL, stock engine - YouTube[/ame]

05-17-2013, 07:06 PM	#2
mattles Proud of FR Layout Join Date: Jan 2012 Drives: 2013 Scion FR-S 6MT Location: Puget Sound, WA Posts: 984 Thanks: 101 Thanked 381 Times in 228 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	mine only seems to do it when its hot out and Im running the a/c. Definitely something you should have a dealership look at for warranty work. Ive been too lazy to take mine in though. __________________ --Matt // Flickr \\ Instagram

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05-17-2013, 07:14 PM	#3
Ninjin Senior Member Join Date: Jun 2012 Drives: SWP BRZ 6MT Location: Phoenix, AZ Posts: 876 Thanks: 415 Thanked 576 Times in 332 Posts Mentioned: 144 Post(s) Tagged: 0 Thread(s)	I've been fortunate to only have an idle dip issue when there was a small leak in my pcv system after installing a catch can (ID10T error ). The video seems to show the symptoms described as part of the infamous P0019 cel issue, just without the actual cel so far. Assuming this is your BRZ, you've had it for a while, has it ever had the ecu reflash?

05-17-2013, 07:20 PM	#4
abutterman Senior Member Join Date: Dec 2012 Drives: 2013 BRZ Limited - WRB, MT Location: Long Island, NY Posts: 1,177 Thanks: 58 Thanked 176 Times in 139 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	mine will do it but not that frequent; maybe once while i'm stopped. I do always have the auto climate control on though so that could be contributing to it

05-17-2013, 07:26 PM	#5
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,542 Thanks: 8,931 Thanked 14,190 Times in 6,840 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	This was happening somewhat permanently, and is much more extreme than the idle dip that was happening previously. You can actually hear a misfire most of the times when the RPMs dip, and the jump up is fairly large. The previous idle issue happened once every ~15-20 seconds, and it was fairly quick. This is consistent, and constantly fluctuates, almost like a cammed civic, but with a slower oscillation.

05-17-2013, 09:44 PM	#7
Lonewolf Senior Member Join Date: Dec 2011 Drives: Moped Location: CA Posts: 4,300 Thanks: 4,905 Thanked 2,131 Times in 1,195 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	The CEL is coming, its just a matter of time. Do you have a scan tool/datalogger to see what is going on with the car when the idle jumps/drops and the knock occurs? What are you guys doing to those motors at CSG (this could be number three, right?) pissing in the gas tank?

05-17-2013, 11:37 PM	#8
vubaru Now with Boost! Join Date: Aug 2012 Drives: 2013 SWP BRZ Ltd. Location: Bay Area, CA Posts: 415 Thanks: 281 Thanked 424 Times in 257 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	The only thing it's missing is the idle shaking/shuddering...couldn't tell from the video. When it CELs, take it to the dealer and leave it there until they're done with it.

05-18-2013, 08:16 PM	#9
wbsrazzle Member Join Date: Apr 2013 Drives: Subaru BRZ 6MT LTD Location: Norcal - penninsula Posts: 77 Thanks: 2 Thanked 9 Times in 9 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Take it in to the dealer asap man, get your ecu flashed there to the latest.

05-19-2013, 09:59 AM	#14
ntron1 Sarcastic Bastard Join Date: Apr 2013 Drives: '13 DGM BRZ, '13 Mini, 1999 Blazer Location: Amish Land, PA Posts: 586 Thanks: 341 Thanked 336 Times in 182 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	TPMS light is on. If this is not real then it is one of the indicators of an ECU problem.

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