Advertisement

Engine skips a beat at startup

Discussion in 'Issues, Repairs, Warranty, TSB, Recalls' started by Thegipper, Jul 28, 2020.

  1. Thegipper

    Thegipper Well-Known Member

    First Name:
    John
    Vehicle(s):
    2020 Mustang GT PP1
    Joined:
    Oct 7, 2019
    Location:
    Orange County, CA
    Posts:
    92
    Likes Received:
    26
    0   0   0
    Hi all. I’ve had this strange issue, which may just be normal, since I’ve owned the car.

    When the car is started first thing in the morning, after about 10 seconds it’ll “skip a beat” before it goes back into rhythm. Do any of you have this as well? I wish I had a better way of describing it.

    Thanks!
     
  2. ORRadtech

    ORRadtech Well-Known Member

    First Name:
    Dave
    Vehicle(s):
    18 Mustang EcoBoost convertible, 14 Ford Fusion SE
    Joined:
    Sep 12, 2019
    Location:
    Atlanta, Georgia
    Posts:
    399
    Likes Received:
    222
    0   0   0
    Skips like the idle drops?
    Or
    Skips like a missfire?
    If it's the idle look into the "evap purge valve".
    If it's a misfire then you may have a dtc stored.
     
  3. OP
    OP
    Thegipper

    Thegipper Well-Known Member

    First Name:
    John
    Vehicle(s):
    2020 Mustang GT PP1
    Joined:
    Oct 7, 2019
    Location:
    Orange County, CA
    Posts:
    92
    Likes Received:
    26
    0   0   0
    #3 Thegipper, Jul 28, 2020
    Last edited: Jul 28, 2020
    Good question. What would a misfire look like?

    For a split second the idle seems to drop.
     
  4. NeedForGreen

    NeedForGreen Well-Known Member

    Vehicle(s):
    2019 Mustang GT Premium
    Joined:
    Aug 8, 2019
    Location:
    FL
    Posts:
    329
    Likes Received:
    197
    0   0   0
    Do you have an aftermarket exhaust?
     
  5. OP
    OP
    Thegipper

    Thegipper Well-Known Member

    First Name:
    John
    Vehicle(s):
    2020 Mustang GT PP1
    Joined:
    Oct 7, 2019
    Location:
    Orange County, CA
    Posts:
    92
    Likes Received:
    26
    0   0   0
    Everything is stock. It only does it once upon a cold startup. I need to get an scan tool. I’m so not mechanically inclined.
     
  6. WildHorse

    WildHorse N/A or GO HOME

    First Name:
    Greg
    Vehicle(s):
    '17 Mustang GT
    Joined:
    Jun 28, 2017
    Location:
    Winnipeg, MB
    Posts:
    2,962
    Likes Received:
    1,565
    Garage Profiles:
    1
    Rating:
    100%
    4   0   0
    Ur under warranty.. bring it in.
     
  7. OP
    OP
    Thegipper

    Thegipper Well-Known Member

    First Name:
    John
    Vehicle(s):
    2020 Mustang GT PP1
    Joined:
    Oct 7, 2019
    Location:
    Orange County, CA
    Posts:
    92
    Likes Received:
    26
    0   0   0
    Yes. I’ll do that. It’s more of a quick stutter upon startup.
     
  8. NeedForGreen

    NeedForGreen Well-Known Member

    Vehicle(s):
    2019 Mustang GT Premium
    Joined:
    Aug 8, 2019
    Location:
    FL
    Posts:
    329
    Likes Received:
    197
    0   0   0
    If you can get a video of it and post it we might be of more use. Dealer is a good idea...if they can replicate it. Always good to have video in that case as well in case they give you the typical, "We didnt find anything".
     
    Soulja4187 likes this.
  9. OP
    OP
    Thegipper

    Thegipper Well-Known Member

    First Name:
    John
    Vehicle(s):
    2020 Mustang GT PP1
    Joined:
    Oct 7, 2019
    Location:
    Orange County, CA
    Posts:
    92
    Likes Received:
    26
    0   0   0
    Good suggestion, I’ll do that tomorrow morning. Thanks.
     
  10. Elp_jc

    Elp_jc Well-Known Member

    First Name:
    JC
    Vehicle(s):
    2019 Bullitt K7979, MR, Nav, B&O, Cover
    Joined:
    May 2, 2020
    Location:
    El Paso, TX
    Posts:
    1,585
    Likes Received:
    268
    0   0   0
    Taking it to a dealer now would be a waste of time, and possibly get a scuff, scratch, dent, etc., as a souvenir :). If it's anything problematic, you'd get a CEL, and THAT would be the time to take it in. It's perfectly normal to have a misfire or two on cold starts, and that's why you don't get a CEL when it's just a small amount within 'x' amount of time. My engine also shakes a little when cold, as well as most other vehicles I've owned, so nothing to worry about.
     
  11. OP
    OP
    Thegipper

    Thegipper Well-Known Member

    First Name:
    John
    Vehicle(s):
    2020 Mustang GT PP1
    Joined:
    Oct 7, 2019
    Location:
    Orange County, CA
    Posts:
    92
    Likes Received:
    26
    0   0   0
    You do have a point too. It is a very reproducible issue that happens every time, just once, when the car is completely cold At the 10-15 second mark post start-up. Maybe it’s calibrating the air fuel mixture at startup; but then why only when it’s cold and not at every start-up mid-day?
     
  12. Elp_jc

    Elp_jc Well-Known Member

    First Name:
    JC
    Vehicle(s):
    2019 Bullitt K7979, MR, Nav, B&O, Cover
    Joined:
    May 2, 2020
    Location:
    El Paso, TX
    Posts:
    1,585
    Likes Received:
    268
    0   0   0
    Fuel is harder to atomize when engine is cold. Bottom line is if you have no CEL, your engine does NOT have any issues that need service right now; it's as simple as that. Stop worrying about irrelevant things :D. Would you really want a dealer tearing into your engine for something as stupid as that, and have the same 'problem' after that? Didn't think so :). Again, my engine also vibrates when cold, and more than yours, so it's normal.
     
    Soulja4187 and Thegipper like this.
  13. cipherzero

    cipherzero Member

    Vehicle(s):
    2019 A10 PP1 GT
    Joined:
    Jun 3, 2018
    Location:
    Maryland
    Posts:
    7
    Likes Received:
    2
    0   0   0
    Just wanted to add I have the same "issue" as well. Its reproducible 100% of the time on first cold start of the day.
     
    Thegipper likes this.
Loading...

Share This Page