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

P1504 Intake Air Control circuit malfunction??

  • Thread starter Thread starter Blev
  • Start date Start date Dec 30, 2004

Blev

New Member
Aug 17, 2003
1,295
1
0
So. Cal. V-Town
Dec 30, 2004
#1
  • Dec 30, 2004
  • #1
I got that code after my headswap. Do I have to change out the IAC now? I had a code reader and the error it gave me was

Auxiliary inputs
Veh. Spd.
Idle Speed Control

Is this something I have to get a tune to fix or did my IAC go bad during the swap from sitting out for a few days?
 
You must log in or register to reply here.

Similar threads

8
Foxbody high rpms and surging rpms
  • 86foxseth
  • Jun 9, 2026
  • Fox 5.0 Mustang Tech
Replies
4
Views
171
Fox 5.0 Mustang Tech Jun 13, 2026
Noobz347
SURGING IDLE / NO IDLE CHECKLIST FOR 1999–2004 MUSTANG GT (4.6L 2V) - Work In Progress
  • Noobz347
  • Aug 30, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
862
1996 - 2004 SN95 Mustang -General/Talk- Aug 30, 2025
Noobz347
SURGING IDLE / NO IDLE CHECKLIST FOR 1996–1998 MUSTANG GT (4.6L 2V) - Work In Progress
  • Noobz347
  • Aug 30, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
0
Views
710
1996 - 2004 SN95 Mustang -General/Talk- Aug 30, 2025
Noobz347
H
Holley Carb Tuning Help
  • hassler
  • Oct 25, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
6
Views
315
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 29, 2025
85GTStangGuy
S
01 GT NO IDLE
  • Scwhitten
  • Apr 15, 2025
  • SN95 4.6L Mustang Tech
Replies
1
Views
219
SN95 4.6L Mustang Tech Apr 22, 2025
89ripper
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?