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

Little Problem...

  • Thread starter Thread starter jamnut87
  • Start date Start date Dec 9, 2006
J

jamnut87

New Member
Mar 28, 2004
46
0
0
Dec 9, 2006
#1
  • Dec 9, 2006
  • #1
A few months ago i got a chip burnt from JMS Chips (the superchips 4 program eliminator chip). The first time i had to send it back because the car was acting completely out of whack. The new one they sent me has been working fine and my car runs great, with one exception. Every time i come to a stop my car holds the idle up at 1500rpm till i come to a complete stop, then idles back down to ~800rpm. Ive tried closing off the throttle blade more and reseting the computer, and if i close it too much, the problem goes away but as i creep to a stop the rpm stays around 1000, then at the stop jumps up a tiny bit, and then stalls, or comes very close to stalling but then recovers. If i open it up a little more (reset the computer of course) it seems to want to just hang at 1500 till a complete stop like the first time...

Anyone had this before... is my idle air getting old? i cant find any vaccum leaks...

Thing is if i were to take the chip out it doesn't do it anymore....

Should i call them again? I really want to steer clear of calling because if i have to send the chip back it takes them like a month before i get it back...

thanks,
david
 

parchisi

New Member
Apr 13, 2006
519
1
0
New Mexico
Dec 9, 2006
#2
  • Dec 9, 2006
  • #2
My car does that too...I don't know why it does it but it doesn't really bother me too much.
 

drakesdad

Member
Jul 29, 2005
961
0
16
Oregon OHIO
Dec 9, 2006
#3
  • Dec 9, 2006
  • #3
parchisi said:
My car does that too...I don't know why it does it but it doesn't really bother me too much.
Click to expand...

I must second that as well...............same high idle when I first stop it or right before I stop...hangs........then mellows out....I don't thin the IAC can keep up....
 
You must log in or register to reply here.

Similar threads

7
Engine Random hanging idle
  • 706 Saleen
  • Feb 11, 2026
  • Fox 5.0 Mustang Tech
Replies
9
Views
665
Fox 5.0 Mustang Tech Feb 19, 2026
86HO5.0
8
E
2007 GT Stalls when lights or a/c turned on
  • ejscarfo
  • Jun 22, 2026
  • 2005 - 2009 Specific Tech
Replies
2
Views
144
2005 - 2009 Specific Tech Jun 29, 2026
ejscarfo
E
S
Fox '87 GT can't get to stay running
  • spilly
  • Mar 29, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
27
Views
842
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 20, 2026
spilly
S
L
Fox 88 Gt will not idle
  • Leeroy05
  • Feb 1, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
6
Views
285
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Feb 2, 2025
AeroCoupe
S
Engine Stalls when downshifting/coasting
  • Scott_S
  • Nov 5, 2025
  • Fox 5.0 Mustang Tech
Replies
11
Views
741
Fox 5.0 Mustang Tech Nov 6, 2025
Mustang5L5
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?