Car dies at idle - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

nickebanks · 03-12-2023, 08:45 PM

Recently tuned by Delicious on their stage 2 tune. Had no issues the first few days. I'm not sure at all what the issue could be. This only happens after RPMs increase and drop back down. Does not happen when coasting in neutral or resting at idle.

Idle log: Giving the car a little bit of gas at idle here, not too sure what to look for here but I see the voltage dropping super low as the car almost stalls.

https://datazap.me/u/nickebanks/log-...?log=0&data=16

Driving log: Not sure if there's anything else to look for here. There are a couple points in time where I almost stall highlighted by the voltage dip.

https://datazap.me/u/nickebanks/log-...=0&data=6-9-16

Pat · 03-12-2023, 08:51 PM

Well what did Delicious say?

arxm · 03-29-2023, 01:51 PM

im having the exact same issue, delicious tune for my jackson racing c38 kit. Car will die if im feathering the clutch to reverse for example, as soon as I want to stop, I clutch in and as the rpms come back down the car stalls. Had a few times where ill just be stopped at a light in neutral and the car dies! Been waiting a week for them to get back to me which is mildly frustrating

Vangfrs · 04-22-2023, 12:58 AM

Any update? Been tuning car recently and first time happened 4/18 coasting in neutral car almost stalls out, second time 4/21 car dies at light in neutral.

sneaky_pete · 04-25-2023, 08:05 AM

is your car relearning idle after the tune?

I recently replaced my battery and my idle was all over the place (Stage 2+ tune), stalled it as well. after a couple of hours driving everything went back to normal - no more erratic idle.

found this:
https://www.ft86club.com/forums/showthread.php?t=152064

Vangfrs · 04-26-2023, 11:41 PM

Was running oft for a while and then DT and never experienced anything like it so kind of freaked me out. I figured it was relearning but it happened two different days so kind of spooked me. After a few more days of driving things seem normal now, and tuner also said it was normal as you stated about ecu relearning, so hopefully thats it.

03-12-2023, 08:45 PM	#1
nickebanks Junior Member Join Date: Mar 2023 Drives: 2016 Scion FR-S Location: Florida, USA Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Car dies at idle Recently tuned by Delicious on their stage 2 tune. Had no issues the first few days. I'm not sure at all what the issue could be. This only happens after RPMs increase and drop back down. Does not happen when coasting in neutral or resting at idle. Idle log: Giving the car a little bit of gas at idle here, not too sure what to look for here but I see the voltage dropping super low as the car almost stalls. https://datazap.me/u/nickebanks/log-...?log=0&data=16 Driving log: Not sure if there's anything else to look for here. There are a couple points in time where I almost stall highlighted by the voltage dip. https://datazap.me/u/nickebanks/log-...=0&data=6-9-16

03-29-2023, 01:51 PM	#3
arxm Senior Member Join Date: Jan 2017 Drives: 2013 FR-S, 2023 BRZ Location: Toronto Posts: 248 Thanks: 108 Thanked 74 Times in 46 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	im having the exact same issue, delicious tune for my jackson racing c38 kit. Car will die if im feathering the clutch to reverse for example, as soon as I want to stop, I clutch in and as the rpms come back down the car stalls. Had a few times where ill just be stopped at a light in neutral and the car dies! Been waiting a week for them to get back to me which is mildly frustrating __________________ 2013 Whiteout FRS 6MT with a JRSC RS Pulley @ 500ish WHP 2023 Ignition Red BRZ 6MT awaiting boost

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04-22-2023, 12:58 AM	#4
Vangfrs Member Join Date: Jul 2014 Drives: Argento Frs Location: 209 Posts: 14 Thanks: 1 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Any update? Been tuning car recently and first time happened 4/18 coasting in neutral car almost stalls out, second time 4/21 car dies at light in neutral.

04-25-2023, 08:05 AM	#5
sneaky_pete Member Join Date: Jun 2018 Drives: MY14 86 GTS Manual Velocity Orange Location: Australia Posts: 77 Thanks: 4 Thanked 49 Times in 26 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	is your car relearning idle after the tune? I recently replaced my battery and my idle was all over the place (Stage 2+ tune), stalled it as well. after a couple of hours driving everything went back to normal - no more erratic idle. found this: https://www.ft86club.com/forums/showthread.php?t=152064

04-26-2023, 11:41 PM	#6
Vangfrs Member Join Date: Jul 2014 Drives: Argento Frs Location: 209 Posts: 14 Thanks: 1 Thanked 3 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Was running oft for a while and then DT and never experienced anything like it so kind of freaked me out. I figured it was relearning but it happened two different days so kind of spooked me. After a few more days of driving things seem normal now, and tuner also said it was normal as you stated about ecu relearning, so hopefully thats it.

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