• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

Need Suggestion - Tuning 42lb Injectors - Hard Starts

  • Thread starter Thread starter Yellow302
  • Start date Start date Nov 12, 2012

Yellow302

Member
Mar 2, 2003
789
2
19
NJ
Nov 12, 2012
#1
  • Nov 12, 2012
  • #1
Basically the car will start when it is cold fine, but once it heats up it wont start unless I give it some extra gas.

I am using the SCT pro racer software to tune.

I am looking for the area that will best fix this issue.

Not sure if it is a hot start fuel issue, or hot start air issue.

Any advice would be helpful!
 

Yellow302

Member
Mar 2, 2003
789
2
19
NJ
Nov 12, 2012
#2
  • Nov 12, 2012
  • #2
So i tried increasing the Crank fuel pulse width. from .00199 to .00450 which was the value for 70deg temp.
Drove till it was warm and.... shut the car off, would not start.

Figured that I should be lowering the number instead of raising it.

Default was .00169 (I took 10% out) 210 deg

Car started, still had get give it a little gas. I belive the more I lower this the better the car will start.

I will post my progress next weekend.
 
You must log in or register to reply here.

Similar threads

D
Tune erased/wont start/91 fox body
  • drew123
  • Jun 15, 2026
  • Digital Self-tuning Forum
Replies
1
Views
119
Digital Self-tuning Forum Jun 21, 2026
CAMTWO1070
Hard to start when engine is cold
  • 86_Capri
  • Mar 11, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
32
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 21, 2026
CAMTWO1070
T
Help with a 95 5L crank no start
  • TheBubbaJoe
  • Nov 4, 2025
  • 1994 - 1995 Specific Tech
Replies
3
Views
453
1994 - 1995 Specific Tech Nov 5, 2025
AeroCoupe
G
2016 GT, Cold Air/Tune Trouble (overheating) . Advice/Help Please!
  • GLStang
  • Sep 6, 2025
  • 2015 - 2023 (S550) Mustang -General/Talk
Replies
1
Views
338
2015 - 2023 (S550) Mustang -General/Talk Sep 6, 2025
Noobz347
F
1986 mustang no start
  • foxyjamss221
  • Oct 11, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
4
Views
330
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 13, 2025
foxyjamss221
F
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech
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?