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Engine stall and die

AhmadAq

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Jordan
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Ahmad
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Mustang 2016 ecoboost
Hello,

My 2016 mustang ecoboost is stalling while in drive gear or reverse with break, it will stop stalling on neutral, also when it is close to stop (let us say while slowing down before stop).
It stall and it will die (shut off), i had to turn it on again.

I have the following codes on the DTC:

1- P0171: System too lean, bank 1. Status: confirmed
2- P0088: Fuel rail/system pressure too high. Status: Pending
3- P2195: Heated oxygen sensor(HO2S) 1, bank 1 - signal stuck lean. Status: Pending

It happened before 1 month and i changed the following parts:

1- Fuel Pressure Rail Sensor to the upgraded one.
2- Purge valve (Hose Fuel Vapor) .
3- High Pressure Fuel Pump.
4- Spark Plugs.
5- O2 Sensor the upper one.
6- Cleaned the MAF sensor.
7- Intake Air Filter.

After changing all of the mentioned above the car changed better and the DTC errors 2 and 3 disappeared, i only had P0171 and it was rarely stalling.
** Now it came back the same symptoms and DTC codes.

Any help would be appreciated.

It has a custom tune, K&N intake, blow off, resonator delete, muffler delete.
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AhmadAq

Member
Joined
Sep 23, 2022
Threads
4
Messages
15
Reaction score
8
Location
Jordan
First Name
Ahmad
Vehicle(s)
Mustang 2016 ecoboost
The problem was a vacuum leak from the intake tube.
 
 








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