Driving after the car has been sitting outdoors in hot weather - engine cuts out - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Sh1FTy · 02-18-2018, 10:33 PM

Hi all, just a bit of background before going into detail:

Prior to this issue occurring, I had just had some custom work done to my turbo setup. I switched out a chinese Turbo for a Garrett GT3076R due to some oil leak issues.

I've had an issue that has occurred 3 times so far. After the car has been sitting outdoors in hot weather for a few hours (we're talking about 35C+ air temp) the car will start up fine, but after about 1 minute of driving, the engine would cut out and lights would flash up on the dash. No error codes are detected via my OBD2 tool.

Once the cars come to a stop, I would start it up again and all 3 times I have driven it home fine (i'd be on the road for 45-60mins) without it happening again.

The first 2 times it happened my car had not been retuned since the turbo swap. I then had a road tune done a few weeks ago and it happened again just yesterday. I still intend to do a dyno tune in a few weeks time once I get my boost controller in.

But all 3 times, the car had been sitting outside in hot weather. Most of the time the car is garaged and I would never have this issue when starting up the car.

Any ideas or suggestions on what it could be?

Zentec · 02-19-2018, 01:20 AM

Sounds like an ecu problem and or a ground. I had a car that would randomly shut off and stop running and that’s what it ended up being

Ultramaroon · 02-19-2018, 01:29 AM

+1 for @Zentec. Wild guess: Check all the mount screws for the DI injector driver box.

humfrz · 02-19-2018, 03:31 AM

I have no idea of what could cause that ........ but, I seriously doubt it has anything to do with your car sitting in the hot sun .......

humfrz

JD001 · 02-19-2018, 03:54 AM

Is fuel evaporation possible? I used to own a little turbocharged pocket rocket that used to refuse to start after a session of driving in hot weather as the heat under the bonnet cooked the fuel..

guybo · 02-19-2018, 04:38 AM

you need to figure out first whether you are losing fuel pressure or spark and chase the problem from there. Use Torque Pro to log fuel pressure and fuel trims and see what it's doing leading up to stalling out.

Ultramaroon · 02-19-2018, 01:10 PM

No, that's bullshit.

Guessing is way more efficient. That's how the dealer techs do it.

guybo · 02-19-2018, 02:33 PM

Lol, sorry I forgot we have some here!

Ultramaroon · 02-19-2018, 03:39 PM

Quote:

Originally Posted by guybo

Lol, sorry I forgot we have some here!

I didn't.

02-18-2018, 10:33 PM	#1
Sh1FTy Member Join Date: Jul 2014 Drives: Toyota 86 Pegasus White Location: Sydney Posts: 47 Thanks: 1 Thanked 9 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Driving after the car has been sitting outdoors in hot weather - engine cuts out Hi all, just a bit of background before going into detail: Prior to this issue occurring, I had just had some custom work done to my turbo setup. I switched out a chinese Turbo for a Garrett GT3076R due to some oil leak issues. I've had an issue that has occurred 3 times so far. After the car has been sitting outdoors in hot weather for a few hours (we're talking about 35C+ air temp) the car will start up fine, but after about 1 minute of driving, the engine would cut out and lights would flash up on the dash. No error codes are detected via my OBD2 tool. Once the cars come to a stop, I would start it up again and all 3 times I have driven it home fine (i'd be on the road for 45-60mins) without it happening again. The first 2 times it happened my car had not been retuned since the turbo swap. I then had a road tune done a few weeks ago and it happened again just yesterday. I still intend to do a dyno tune in a few weeks time once I get my boost controller in. But all 3 times, the car had been sitting outside in hot weather. Most of the time the car is garaged and I would never have this issue when starting up the car. Any ideas or suggestions on what it could be?

02-19-2018, 01:29 AM	#3
Ultramaroon 義理チョコ Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,861 Thanks: 52,114 Thanked 36,510 Times in 18,915 Posts Mentioned: 1106 Post(s) Tagged: 9 Thread(s)	+1 for @Zentec. Wild guess: Check all the mount screws for the DI injector driver box. __________________ service manuals

02-19-2018, 01:10 PM	#7
Ultramaroon 義理チョコ Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,861 Thanks: 52,114 Thanked 36,510 Times in 18,915 Posts Mentioned: 1106 Post(s) Tagged: 9 Thread(s)	No, that's bullshit. Guessing is way more efficient. That's how the dealer techs do it. __________________ service manuals

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02-19-2018, 01:20 AM	#2
Zentec Senior Member Join Date: May 2017 Drives: 2017 Toyota 86 Location: Las Vegas Nv Posts: 214 Thanks: 194 Thanked 78 Times in 63 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Sounds like an ecu problem and or a ground. I had a car that would randomly shut off and stop running and that’s what it ended up being

02-19-2018, 03:31 AM	#4
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 29,866 Thanks: 28,787 Thanked 31,813 Times in 16,424 Posts Mentioned: 708 Post(s) Tagged: 2 Thread(s)	I have no idea of what could cause that ........ but, I seriously doubt it has anything to do with your car sitting in the hot sun ....... humfrz

02-19-2018, 03:54 AM	#5
JD001 Senior Member Join Date: Apr 2015 Drives: Subaru BRZ Location: UK Posts: 6,024 Thanks: 7,650 Thanked 6,181 Times in 3,470 Posts Mentioned: 25 Post(s) Tagged: 2 Thread(s)	Is fuel evaporation possible? I used to own a little turbocharged pocket rocket that used to refuse to start after a session of driving in hot weather as the heat under the bonnet cooked the fuel..

02-19-2018, 04:38 AM	#6
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	you need to figure out first whether you are losing fuel pressure or spark and chase the problem from there. Use Torque Pro to log fuel pressure and fuel trims and see what it's doing leading up to stalling out.

02-19-2018, 02:33 PM	#8
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Lol, sorry I forgot we have some here!

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