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'19 GT stalling at idle

Discussion in 'Issues, Repairs, Warranty, TSB, Recalls' started by Hollywood_85374, Apr 2, 2020.

  1. Hollywood_85374

    First Name:
    Mike
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    Car is not modded; problem started after first dealer service. It stalls out intermittently at traffic lights, stop signs, or extended idling primarily during warm-up. Voltage is all over the place, ranging from 13.0-14.7v. Seems to run slightly rough at times and stumbles under acceleration, accompanied by what sounds like a slight knock/ping. Premium fuel (91) is all I run in the car. Car is going to the dealer tomorrow AM but with the problem being intermittent I predict a 'could not duplicate' diagnosis. Any ideas? Thanks.
     
  2. BlueThunder

    BlueThunder ***ding Rookie

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    Stick or auto? My 18 stick had issues in the first 6 or so months of really rough idling and stalls, especially after driving it, and then starting it up right after like quick runs to the store. It's been fine for over a year now though. I never had it diagnosed and know a few others who had my same issue with 18+ stick cars. So probably the first 7k miles or so it was wonky like that. Sometimes the idle will still drop to what looks like just under 600 rpms and she'll shiver a bit like she wants to stall. Not enough of an issue though for me to let the Ford guys dick around with it.
     
  3. OP
    OP
    Hollywood_85374

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    10R80 auto. Idle is around 500 rpm. Seems low IMO.
     
  4. OP
    OP
    Hollywood_85374

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    latest update...the car is at the dealer...tech drove it...it stalled out and would not restart. They had to tow it back to the shop.
     
  5. Monopoly

    Monopoly Well-Known Member

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    500 is low for idle I think? Mines 750
     
  6. OP
    OP
    Hollywood_85374

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    update if anyone is interested.
    initial diagnosis was a malfunctioning fuel pump/sending unit. This was replaced but did not fix the problem. Car is back in the shop, now diagnosed with a bad fuel rail pressure sensor. Shop said this likely caused the fuel pump to fail but was not detected on the initial visit.
     
  7. fahadco80

    fahadco80 Active Member

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    Fahad
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    Hi,

    did you find a repair?

    I am having the exact same issue and dealer cant fine a fix.

    Please help

    Regards

    Fahad
     
  8. OP
    OP
    Hollywood_85374

    First Name:
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    replacing the fuel rail pressure sensor on the lower fuel rail seems to have fixed it. involved process...was without the car for a while...took a lot of troubleshooting.
     
  9. fahadco80

    fahadco80 Active Member

    First Name:
    Fahad
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    Thanks for the update, will tell the dealer and hope mine will be fixed
     
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