|Help| Car keeps dying on idle

[shadows_5.0]

Whats up guys im having some issues with my 2023 mustang gt

When I turn on the car it idles for about a couple seconds and then dies. Occasionally it will stay on longer but ends up dying. All electronics remain on. I already changed the battery. I checked throttle body it wasnt crazy dirty just a bit of dust. I looked at MAF sensor and it looked clean I even sprayed it with air to remove any dirt.

The only code my car is giving me is P050A
Other than that no other codes and no check engine light

Any ideas on what it could be? The car was running perfectly fine for months


Mod list
ESS g3x, e85 tune, fore triple pump return, 1050 injectors, long tube headers

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[robvas]

Smoke check it

Post a log of it starting/stalling

 

[Autojvnkie]

Whats up guys im having some issues with my 2023 mustang gt

When I turn on the car it idles for about a couple seconds and then dies. Occasionally it will stay on longer but ends up dying. All electronics remain on. I already changed the battery. I checked throttle body it wasnt crazy dirty just a bit of dust. I looked at MAF sensor and it looked clean I even sprayed it with air to remove any dirt.

The only code my car is giving me is P050A
Other than that no other codes and no check engine light

Any ideas on what it could be? The car was running perfectly fine for months


Mod list
ESS g3x, e85 tune, fore triple pump return, 1050 injectors, long tube headers

Based on the aggressive mod list and the mechanics of the 5.0L.Code P050A means the car is struggling with Cold Start Idle Air Control. The engine's computer wants a specific amount of air and fuel to warm up, but it isn't getting it.
Because you changed the battery, the car's computer lost its memory. The computer needs to relearn how to idle. This is harder on E85, which likes to stall when the car is cold

 

[SheepDog]

Maybe a vacuum leak

 

[shadows_5.0]

Based on the aggressive mod list and the mechanics of the 5.0L.Code P050A means the car is struggling with Cold Start Idle Air Control. The engine's computer wants a specific amount of air and fuel to warm up, but it isn't getting it.
Because you changed the battery, the car's computer lost its memory. The computer needs to relearn how to idle. This is harder on E85, which likes to stall when the car is cold

so how would I go about getting this situated? The issue was happening with the old battery before it completely died out. I installed the new battery and did the BMS reset as well

 

[SheepDog]

Once the engine starts, will it stay running if you give it a little throttle? This could also be a fuel delivery issue. Are you sure that you have good fuel pressure?

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