• Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-

2012 Boss 302 help

  • Thread starter Thread starter 94blackvertgt
  • Start date Start date Aug 21, 2025
9

94blackvertgt

Member
Feb 7, 2024
3
1
13
North Carolina
Aug 21, 2025
#1
  • Aug 21, 2025
  • #1
Need some help from the Mustang gods.
I have a '12 Boss 302. Supercharged. Last night I was messing with the MyKey settings. Turned the car off. Tried starting back up and would immediately die after starting. Gave it some gas while starting, would run rough for a second and then back to idle. Revs and sounds fine after that. Let it sit for a few hours, started right up. Turned off and tried starting again, and died immediately. Doubt it has anything to do with the Mykey, just a coincidence. But looking for some guidance. Thanks!
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
43,418
21,628
234
Box behind Walmart
Aug 21, 2025
#2
  • Aug 21, 2025
  • #2
Pull Codes
 
You must log in or register to reply here.

Similar threads

F
2004 Mustang GT – Fuel Pump Not Priming
  • Fayio
  • Apr 22, 2026
  • SN95 4.6L Mustang Tech
Replies
7
Views
440
SN95 4.6L Mustang Tech Apr 27, 2026
n0v8or
N
E
2007 GT Stalls when lights or a/c turned on
  • ejscarfo
  • Jun 22, 2026
  • 2005 - 2009 Specific Tech
Replies
3
Views
266
2005 - 2009 Specific Tech Sep 26, 2026
manicmechanic007
F
Fox 1990 Mustang GT 5.0 A9L – Engine suddenly shuts off but immediately restarts when key turned
  • FishermansFriend
  • Aug 9, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
16
Views
579
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Aug 30, 2026
General karthief
S
Need help asap
  • shaggyman65
  • Dec 24, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
293
1996 - 2004 SN95 Mustang -General/Talk- Dec 24, 2025
shaggyman65
S
G
Resolved Smoking Wiring Issue After GT40 Head Swap
  • Grapes
  • Aug 15, 2026
  • Fox 5.0 Mustang Tech
Replies
17
Views
474
Fox 5.0 Mustang Tech Aug 22, 2026
Grapes
G
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 2005 - 2014 S-197 Mustang -General/Talk-
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?