• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

More stupid sproblems

  • Thread starter Thread starter Back in Black
  • Start date Start date Sep 15, 2004

Back in Black

Don't feel bad. Almost 3 years on here and the onl
Founding Member
Oct 21, 2002
128
0
16
Pittsburgh.. Ford salesmen at Woltz & Wind For
Sep 15, 2004
#1
  • Sep 15, 2004
  • #1
When ever I start the car, it barley runs. Surges,then drops in idle. NOT the IAC motor. Even after it warms, when I let off the gas, very bad backfireing. If I take it to like 6,000 rpms, car is fine. This all happens when the car is cold. Thanks guys.

I'll make this easier to understand.

1.) Start car in morning. Surges, then the rpms drop and so on.
2.) After I let it warm up. The suging stops but the r's still want to drop and if I push the cluch in, BOOM. Backfiring.The higher the rpm, louder the backfire.
3.) Will continue to backfire until I run it all the way through the r's. Then usually, if the temp gauge is half way (normal), she runs fine til the next day.
 

stang9gt

Founding Member
Dec 21, 2001
1,247
0
0
State College, Pa
Sep 19, 2004
#2
  • Sep 19, 2004
  • #2
Friend having same type of prbs...Interested!!
 
J

jbrown

New Member
Aug 5, 2003
393
0
0
Tallahassee, FL
Sep 20, 2004
#3
  • Sep 20, 2004
  • #3
your sure its not the iac right? because that would explain the dying when cold, but not the backfiring. Does it feel like your engine is missing? Did this start recently after doing a mod?
 
You must log in or register to reply here.

Similar threads

S
Mach 1 iac valve in a 4.6 gt
  • solodriverz
  • Jun 3, 2026
  • SN95 4.6L Mustang Tech
Replies
1
Views
161
SN95 4.6L Mustang Tech Jun 5, 2026
squeak93
8
Foxbody high rpms and surging rpms
  • 86foxseth
  • Jun 9, 2026
  • Fox 5.0 Mustang Tech
Replies
4
Views
335
Fox 5.0 Mustang Tech Jun 13, 2026
Noobz347
G
Idle surging after warm up
  • GALLY3309
  • Jun 10, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
1
Views
242
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 10, 2026
Noobz347
C
98 gt fuel pressure issues
  • chasecollier1984
  • Jun 2, 2026
  • SN95 4.6L Mustang Tech
Replies
0
Views
173
SN95 4.6L Mustang Tech Jun 2, 2026
chasecollier1984
C
Surging/stalling! problem or tune?
  • djj62478
  • Oct 4, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
11
Views
364
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 14, 2026
KRUISR
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang 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?