Car dies after I give it gas once warm - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

toughguy39 · 04-04-2022, 04:35 PM

Hey guys,
Having an interesting problem here. Just did a ton of maintenance/mod installs. The car will start but once I've let it warm up, after I give it gas it will will die. AFR is fine showing around 14-15. Only code I pulled is 0037 but that's bc I installed the delicious tuning flex fuel kit. Other mods I installed are ID1050X injectors, DW300C fuel pump, new spark plugs and coil packs, delicious tuning boost controller, the verus cam plate, the aluminum intake manifold (the 2015 model is plastic) and the EVAP delete (just unplugged connector and zip ties the hoses). Already tried replacing MAP sensor (Omni 3bar) no luck. Any suggestions? New tune was uploaded as well.

NoHaveMSG · 04-04-2022, 05:51 PM

Make sure the bolts on the DI driver are tight and none are missing, it grounds through them. Curious if they rescaled for the different injectors.

toughguy39 · 04-04-2022, 07:52 PM

Quote:

Originally Posted by NoHaveMSG

Make sure the bolts on the DI driver are tight and none are missing, it grounds through them. Curious if they rescaled for the different injectors.

Hey so the driver side fuel rail cover is removed (Non-ECU Side). Need to trim it to fit the new intake manifold. Are there any grounds on that one? The one with the ECU (Passenger side) is installed and all bolts/Connectors installed that connect to the ECU.

RedReplicant · 04-04-2022, 08:07 PM

Assuming you're on ECUTek, do your throttle position sensor values look sane?

toughguy39 · 04-04-2022, 08:33 PM

Quote:

Originally Posted by RedReplicant

Assuming you're on ECUTek, do your throttle position sensor values look sane?

I'm at work rn so I'll check when I'm home, and yes ecutek. Anything else I should look for? I assume by sane you mean like 10 while not pressing the throttle. Think I remember seeing that on previous logs before this happened.

tomm.brz · 04-05-2022, 01:30 AM

a log of what s happening in that moment would be helpfull
and what does the tuner of your car says about it ?

humfrz · 04-05-2022, 02:11 AM

Quote:

Originally Posted by toughguy39

Hey guys,
Having an interesting problem here. Just did a ton of maintenance/mod installs. The car will start but once I've let it warm up, after I give it gas it will will die. AFR is fine showing around 14-15. Only code I pulled is 0037 but that's bc I installed the delicious tuning flex fuel kit. Other mods I installed are ID1050X injectors, DW300C fuel pump, new spark plugs and coil packs, delicious tuning boost controller, the verus cam plate, the aluminum intake manifold (the 2015 model is plastic) and the EVAP delete (just unplugged connector and zip ties the hoses). Already tried replacing MAP sensor (Omni 3bar) no luck. Any suggestions? New tune was uploaded as well.

UGH!

Did YOU do all of the work?

If not, I'd suggest you take your car back to who did the work/tune and have them fix it.

If you did the work/tune, I suggest you take it into a shop and ask them to fix it for you.

sorry - no help -

Grady · 04-05-2022, 08:18 AM

Yep probably the human factor strikes again. If you did the work go back over everything you did. What is you MAP at idle? Possible intake leak. Could be something connected wrong. Get a log to your tuner. Take a close look at your AFR if you engine is dying it can not be 14-15.

NoHaveMSG · 04-05-2022, 11:48 AM

Quote:

Originally Posted by toughguy39

Hey so the driver side fuel rail cover is removed (Non-ECU Side). Need to trim it to fit the new intake manifold. Are there any grounds on that one? The one with the ECU (Passenger side) is installed and all bolts/Connectors installed that connect to the ECU.

No, just the passenger side is what will matter. There are other grounds, I believe one is on the block by the bell housing on the passenger side and the two on the underside of the engine on each valve cover to the chassis. At this point I don't think grounds are the issue.

I'd double check your install, then talk with your tuner. It's almost impossible for us to point you in a direction without a log.

soundman98 · 04-05-2022, 09:51 PM

on a small engine carb, i know that this issue is caused by a poor fuel flow on the high speed needle...

but i get lost when i got to "step 1, plug in computer"

humfrz · 04-05-2022, 10:41 PM

Quote:

Originally Posted by soundman98

on a small engine carb, i know that this issue is caused by a poor fuel flow on the high speed needle...

but i get lost when i got to "step 1, plug in computer"

Now, ain't THAT the truth (fer me at least)!

Back in the day, all you needed to be a "tuner" was a dwell meter, a timing light, a feeler gauge, a 9/16th inch wrench and a screwdriver -

toughguy39 · 04-06-2022, 05:58 PM

Hey guys,
Yep human factor stroke this time. It was a leak at the throttle body. The coupling was pretty loose. It felt tight on the clamp but it wasnt. I also retuned the car with same tune just in case there was any issues there. Car runs great now!

Grady · 04-06-2022, 10:58 PM

Quote:

Originally Posted by toughguy39

Hey guys,
Yep human factor stroke this time. It was a leak at the throttle body. The coupling was pretty loose. It felt tight on the clamp but it wasnt. I also retuned the car with same tune just in case there was any issues there. Car runs great now!

Glad you found it! Now go have fun!

04-04-2022, 04:35 PM	#1
toughguy39 Member Join Date: May 2020 Drives: WRB Turbo Brz Location: TX Posts: 43 Thanks: 3 Thanked 6 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Car dies after I give it gas once warm Hey guys, Having an interesting problem here. Just did a ton of maintenance/mod installs. The car will start but once I've let it warm up, after I give it gas it will will die. AFR is fine showing around 14-15. Only code I pulled is 0037 but that's bc I installed the delicious tuning flex fuel kit. Other mods I installed are ID1050X injectors, DW300C fuel pump, new spark plugs and coil packs, delicious tuning boost controller, the verus cam plate, the aluminum intake manifold (the 2015 model is plastic) and the EVAP delete (just unplugged connector and zip ties the hoses). Already tried replacing MAP sensor (Omni 3bar) no luck. Any suggestions? New tune was uploaded as well.

04-04-2022, 08:07 PM	#4
RedReplicant Senior Member Join Date: Aug 2015 Drives: None Location: Arizona Posts: 922 Thanks: 1,484 Thanked 1,239 Times in 525 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Assuming you're on ECUTek, do your throttle position sensor values look sane? __________________ 2015 Subaru BRZ - TT5 K24 Swap

04-05-2022, 09:51 PM	#10
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,675 Times in 6,782 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	on a small engine carb, i know that this issue is caused by a poor fuel flow on the high speed needle... but i get lost when i got to "step 1, plug in computer" __________________ "The time you enjoy wasting is not wasted time"

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04-05-2022, 01:30 AM	#6
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,207 Thanks: 502 Thanked 1,070 Times in 778 Posts Mentioned: 65 Post(s) Tagged: 0 Thread(s)	a log of what s happening in that moment would be helpfull and what does the tuner of your car says about it ?

04-06-2022, 05:58 PM	#12
toughguy39 Member Join Date: May 2020 Drives: WRB Turbo Brz Location: TX Posts: 43 Thanks: 3 Thanked 6 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Hey guys, Yep human factor stroke this time. It was a leak at the throttle body. The coupling was pretty loose. It felt tight on the clamp but it wasnt. I also retuned the car with same tune just in case there was any issues there. Car runs great now!

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